Cassie Hilditch, a guest speaker from the San Jose State University Research Foundation, presents information on fatigue management inside NASA Kennedy Space Center’s Training Auditorium during the center’s annual Safety and Health Days on March 4, 2020. Taking place March 2 through March 6, Safety and Health Days provides Kennedy employees with a variety of presentations to attend – all of which focus on how to maintain a safe and healthy workforce.
Cassie Hilditch, a guest speaker from the San Jose State University Research Foundation, addresses Kennedy Space Center employees inside the Florida spaceport’s Training Auditorium on March 4, 2020, during the center’s annual Safety and Health Days. Taking place March 2 through March 6, Safety and Health Days provides Kennedy employees with a variety of presentations to attend – all of which focus on how to maintain a safe and healthy workforce. Hilditch’s presentation included information on fatigue management.
Kennedy Space Center employees attend a presentation on fatigue management inside the Florida spaceport’s Training Auditorium on March 4, 2020. The presentation, led by guest speaker Cassie Hilditch from the San Jose State University Research Foundation, was offered during the center’s annual Safety and Health Days, which took place March 2 through March 6. Throughout the week, Kennedy employees had the opportunity to attend a variety of presentations – all of which focused on how to maintain a safe and healthy workforce.
Cassie Hilditch, a guest speaker from the San Jose State University Research Foundation, addresses Kennedy Space Center employees inside the Florida spaceport’s Training Auditorium on March 4, 2020, during the center’s annual Safety and Health Days. Taking place March 2 through March 6, Safety and Health Days provides Kennedy employees with a variety of presentations to attend – all of which focus on how to maintain a safe and healthy workforce. Hilditch’s presentation included information on fatigue management.
Cassie Hilditch, a guest speaker from the San Jose State University Research Foundation, poses with the Safety and Mission Assurance “I Love Safety” poster inside the Kennedy Space Center Training Auditorium on March 4, 2020, during the center’s annual Safety and Health Days. Taking place March 2 through March 6, Safety and Health Days provides Kennedy employees with a variety of presentations to attend – all of which focus on how to maintain a safe and healthy workforce. Hilditch’s presentation included information on fatigue management.
Cassie Hilditch, a guest speaker from the San Jose State University Research Foundation, presents information on fatigue management inside NASA Kennedy Space Center’s Training Auditorium during the center’s annual Safety and Health Days on March 4, 2020. Taking place March 2 through March 6, Safety and Health Days provides Kennedy employees with a variety of presentations to attend – all of which focus on how to maintain a safe and healthy workforce.
Safety favors are photographed inside the Kennedy Space Center Training Auditorium on March 4, 2020, during the Florida spaceport’s annual Safety and Health Days. Taking place March 2 through March 6, Safety and Health Days provides Kennedy employees with a variety of presentations to attend – all of which focus on how to maintain a safe and healthy workforce.
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: fatigue measurement equipment
CVSRF: Fatigue Countermeasures Workshop
INTERIORS OF FATIGUE LAB - GENERAL LAB
GEAR FATIGUE AND SPIRAL BEVEL GEAR TEST FACILITY
BRANCH 5920 PERSONNEL AT WORK - FATIGUE LAB
INTERIORS OF FATIGUE LAB - STIRLING RIG #1
GEAR FATIGUE AND SPIRAL BEVEL GEAR TEST FACILITY
INTERIORS OF FATIGUE LAB - TMD RIG #2
GEAR FATIGUE AND SPIRAL BEVEL GEAR TEST FACILITY
INTERIORS OF FATIGUE LAB - STIRLING RIG #1
HIGH CYCLE HIGH TEMPERATURE STRAIN GAUGE FATIGUE LIFE TEST APPARATUS
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: Mike Holmboe
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: in cockpit, pilots (L) Brian Spence (R) Mike Holmboe with Melissa Mallis
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: in cockpit, pilots (L) Brian Spence (R) Mike Holmboe with Ray Oyung
CVSRF: 747 Simulator Trials of Fatigue Countermeasures: (L-R) Brian Spence, Melissa Mallis and Mike Holmboe
Dr. Jennifer Williams, a NASA research chemical engineer, displays two fatigue samples that will be tested in the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) experiments inside the Prototype Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a 10 percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied to spacecraft and launch vehicles.
Gerard Moscoso, a mechanical engineer technician with NASA, handles a sample that is being prepared for fatigue and corrosion testing for the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) project inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a ten percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied on spacecraft and launch vehicles.
tests the main observation helicopter's transmission used by the Army Kiowa Warrior (OH-58); Tests performed include seeded fault testing, planetary fault diagnostics, and fatigue tests
In this photograph, astronaut Carl Walz performs the Performance Assessment Workstation (PAWS) experiment at the flight deck of the Space Shuttle Orbiter Columbia during the STS-65 mission. Present day astronauts are subject to a variety of stresses during spaceflight. These include microgravity, physical isolation, confinement, lack of privacy, fatigue, and changing work/rest cycles. The purpose of this experiment is to determine the effects of microgravity upon thinking skills critical to the success of operational tasks in space. The principle objective is to distinguish between the effects of microgravity on specific information-processing skills affecting performance and those of fatigue caused by long work periods. To measure these skills, the investigators use a set of computerized performance tests called the Performance Assessment Workstation, which is based on current theoretical models of human performance. The tests were selected by analyzing tasks related to space missions and their hypothesized sensitivity to microgravity. Multiple subjective measures of cumulative fatigue and changing mood states are also included for interpreting performance data.
Shown here are microgreens – a quick-growing, highly nutritious crop – inside the Plant Production Area at NASA’s Kennedy Space Center’s Space Station Processing Facility in Florida on April 17, 2023. The microgreens will be used to make mixes to create complex flavors to help with menu fatigue in space.
Dr. Jennifer Williams, a NASA research chemical engineer, is inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida to begin testing on the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) project on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a 10 percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied to spacecraft and launch vehicles.
Testing of the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) experiment is underway inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a ten percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied on spacecraft and launch vehicles.
Gerard Moscoso, a mechanical engineer technician with NASA, prepares the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) specimens for testing inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a 10 percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied on spacecraft and launch vehicles.
Gerard Moscoso, a mechanical engineer technician with NASA, prepares a sample for testing for the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) project inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a 10 percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied on spacecraft and launch vehicles.
From left, Dr. Jennifer Williams, a NASA research chemical engineer, and Gerard Moscoso, a mechanical engineer technician, inspect specimens prepared forthe Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) experiment inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a 10 percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied used on spacecraft and launch vehicles.
Testing of the Plasma Rapid Oxidation Technique for Extending Component Tenability (PROTECT) experiment is underway inside the Prototype Development Laboratory at NASA’s Kennedy Space Center in Florida on Nov. 2, 2022. Plasma electrolytic oxidation is a surface coating technology that produces oxide layers on the surface of light metals and their alloys to improve their performance characteristics. These coatings are tailored to provide a combination of characteristics such as corrosion protection, wear resistance, thermal management, extreme hardness, and fatigue performance. PROTECT is expected to demonstrate a 10 percent improved fatigue performance and a 70 percent improvement in corrosion characteristics on the interior of treated 3-D printed metallic parts when compared to non-treated parts. PROTECT could be applied on spacecraft and launch vehicles.
Power Pads, shown here, were designed to support and cushion horses' hooves while walking, rurning, and jumping, thus reducing the risk of injury. The pads utilize magnets implanted in the pads to increase blood circulation, not only reducing the chance of injury, but also speeding up the healing process if an injury does occur. Marshall Space Flight Center materials engineer Deborah Dianne Schmidt and materials technician Anthony Schaffer contributed to the design by providing fatigue stress analysis to the prototypes, thus helping determine the best configuration and maximum durability.
Each year, the NESC produces the NESC Technical Update, which highlights two or three individuals from each Center and includes assessments throughout the year. Because of the critical contributions to the NESC mission this year, Rob Jankovsky, NESC Chief Engineer at GRC, chose two individuals to be highlighted. This year, it is Andrew Ring and Michael Cooper. Mr. Ring, pictured here, performs stress and fatigue testing on all manner of materials in various environments and research on jet engine materials, looking for ways to increase the performance and safety of turbine blades and disks. Several NESC assessments have benefited from his expertise, most recently in understanding crack initiation and propagation in the aluminum-magnesium alloys that make up the modules of the ISS. He has also used image processing techniques to quantify the variables in parachute energy modulator production and performance and investigate flaws in the composite weave of overwrapped pressure vessels.
Each year, the NESC produces the NESC Technical Update, which highlights two or three individuals from each Center and includes assessments throughout the year. Because of the critical contributions to the NESC mission this year, Rob Jankovsky, NESC Chief Engineer at GRC, chose two individuals to be highlighted. This year, it is Andrew Ring and Michael Cooper. Mr. Ring, pictured here, performs stress and fatigue testing on all manner of materials in various environments and research on jet engine materials, looking for ways to increase the performance and safety of turbine blades and disks. Several NESC assessments have benefited from his expertise, most recently in understanding crack initiation and propagation in the aluminum-magnesium alloys that make up the modules of the ISS. He has also used image processing techniques to quantify the variables in parachute energy modulator production and performance and investigate flaws in the composite weave of overwrapped pressure vessels.
A "suited" test subject on the Reduced Gravity Walking Simulator located in the hangar at Langley Research Center. The initial version of this simulator was located inside the hangar. Later a larger version would be located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. Francis B. Smith wrote in "Simulators For Manned Space Research:" "The cables which support the astronaut are supported by an overhead trolley about 150 feet above the center line of the walkway and the support is arranged so that the subject is free to walk, run, jump, and perform other self-locomotive tasks in a more-or-less normal manner, even though he is constrained to move in one place." "The studies thus far show that an astronaut should have no particular difficulty in walking in a pressurized space suit on a hard lunar surface. Rather, the pace was faster and the suit was found to be more comfortable and less fatiguing under lunar "g" than under earth "g." When the test subject wished to travel hurriedly any appreciable distance, a long loping gait at about 10 feet per second was found to be most comfortable." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995), p. 377; Francis B. Smith, "Simulators For Manned Space Research," Paper for 1966 IEEE International Convention, New York, NY, March 21-25, 1966.
A 1-foot long stator blade with a thermal coating subjected to intense heat in order to test its strength at the National Aeronautics and Space Administration (NASA) Lewis Research Center. Lewis researchers sought to determine optimal types of ceramic coatings to increase the durability of metals. The research was primarily intended to support the design of stator blades for high-performance axial-flow compressor and turbofan engines. The coatings reduced the temperature of the metal and the amount of required cooling. As engines became more and more sophisticated, compressor blades were required to withstand higher and higher temperatures. Lewis researchers developed a dual-layer thermal-barrier coating that could be applied to turbine vanes and blades and combustion liners. This new sprayable thermal-barrier coating was evaluated for its durability, strength, fatigue, and aerodynamic penalties. This hot-gas rig fired the scorching gas at the leading edge of a test blade. The blade was cooled by an internal air flow. The blades were heated at two different velocities during the program. When using Mach 0.3 gases the entire heating and cooling cycle only lasted 30 seconds. The cycle lasted 60 minutes during tests at Mach 1.
A burner rig heats up a material sample in the Materials and Stresses Building at the National Aeronautics and Space Administration (NASA) Lewis Research Center. Materials technology is an important element in the successful development of advanced airbreathing and rocket propulsion systems. Different types of engines operate in different environments so an array of dependable materials is needed. NASA Lewis began investigating the characteristics of different materials shortly after World War II. In 1949 the materials group was expanded into its own division. The Lewis researchers sought to study and test materials in environments that simulate the environment in which they would operate. The Materials and Stresses Building, built in 1949, contained a number of laboratories to analyze the materials. They are subjected to high temperatures, high stresses, corrosion, irradiation, and hot gasses. The Physics of Solids Laboratory included a cyclotron, cloud chamber, helium cryostat, and metallurgy cave. The Metallographic Laboratory possessed six x-ray diffraction machines, two metalloscopes, and other equipment. The Furnace Room had two large induction machines, a 4500⁰ F graphite furnace, and heat treating equipment. The Powder Laboratory included 60-ton and 3000-ton presses. The Stresses Laboratory included stress rupture machines, fatigue machines, and tensile strength machines.
Reduced Gravity Walking Simulator located in the hangar at Langley Research Center. The initial version of this simulator was located inside the hangar. Later a larger version would be located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil wrote in his paper Discussion of Existing and Planned Simulators for Space Research, When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject' s weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed. -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, NASA SP-4308, p. 377 A.W. Vigil, Discussion of Existing and Planned Simulators for Space Research, Paper presented at Conference on the Role of Simulation in Space Technology, Blacksburg, VA, August 17-21, 1964.
A test subject being suited up for studies on the Reduced Gravity Walking Simulator located in the hangar at Langley Research Center. The initial version of this simulator was located inside the hangar. Later a larger version would be located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. Francis B. Smith wrote in his paper "Simulators For Manned Space Research," "I would like to conclude this talk with a discussion of a device for simulating lunar gravity which is very effective and yet which is so simple that its cost is in the order of a few thousand dollars at most, rather than hundreds of thousands. With a little ingenuity, one could almost build this type simulator in his backyard for children to play on. The principle is ...if a test subject is suspended in a sling so that his body axis makes an angle of 9 1/2 degrees with the horizontal and if he then "stands" on a platform perpendicular to his body axis, the component of the earth's gravity forcing him toward the platform is one times the sine of 9 1/2 degrees or approximately 1/6 of the earth's normal gravity field. That is, a 180 pound astronaut "standing" on the platform would exert a force of only 30 pounds - the same as if he were standing upright on the lunar surface." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, NASA SP-4308; Francis B. Smith, "Simulators For Manned Space Research," Paper for 1966 IEEE International Convention, New York, NY, March 21-25, 1966
A nickel alloy developed at the National Aeronautics and Space Administration (NASA) Lewis Research Center being poured in a shop inside the Technical Services Building. Materials technology is an important element in the successful development of both advanced airbreathing and rocket propulsion systems. An array of dependable materials is needed to build different types of engines for operation in diverse environments. NASA Lewis began investigating the characteristics of different materials shortly after World War II. In 1949 the materials research group was expanded into its own division. The Lewis researchers studied and tested materials in environments that simulated the environment in which they would operate. Lewis created two programs in the early 1960s to create materials for new airbreathing engines. One concentrated on high-temperature alloys and the other on cooling turbine blades. William Klopp, Peter Raffo, Lester Rubenstein, and Walter Witzke developed Tungsten RHC, the highest strength metal at temperatures over 3500⁰ F. The men received an IR-100 Award for their efforts. Similarly a cobalt-tungsten alloy was developed by the Fatigue and Alloys Research Branch. The result was a combination of high temperature strength and magnetic properties that were applicable for generator rotor application. John Freche invented and patented a nickel alloy while searching for high temperature metals for aerospace use. NASA agreed to a three-year deal which granted Union Carbide exclusive use of the new alloy before it became public property.
The Engine Propeller Research Building, referred to as the Prop House, emits steam from its acoustic silencers at the National Advisory Committee for Aeronautics (NACA) Lewis Flight Propulsion Laboratory. In 1942 the Prop House became the first completed test facility at the new NACA laboratory in Cleveland, Ohio. It contained four test cells designed to study large reciprocating engines. After World War II, the facility was modified to study turbojet engines. Two of the test cells were divided into smaller test chambers, resulting in a total of six engine stands. During this period the NACA Lewis Materials and Thermodynamics Division used four of the test cells to investigate jet engines constructed with alloys and other high temperature materials. The researchers operated the engines at higher temperatures to study stress, fatigue, rupture, and thermal shock. The Compressor and Turbine Division utilized another test cell to study a NACA-designed compressor installed on a full-scale engine. This design sought to increase engine thrust by increasing its airflow capacity. The higher stage pressure ratio resulted in a reduction of the number of required compressor stages. The last test cell was used at the time by the Engine Research Division to study the effect of high inlet densities on a jet engine. Within a couple years of this photograph the Prop House was significantly altered again. By 1960 the facility was renamed the Electric Propulsion Research Building to better describe its new role in electric propulsion.
Astronaut Roger Chaffee on the Reduced Gravity Walking Simulator located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil, described the simulator as follows: "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, NASA SP-4308, p. 377; A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.
Special "space" suit for the Reduced Gravity Walking Simulator located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil described the purpose of the simulator in his paper "Discussion of Existing and Planned Simulators for Space Research," "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995), p. 377; A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.
Astronaut Walt Cunningham on the Reduced Gravity Walking Simulator located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil described the purpose of the simulator in his paper "Discussion of Existing and Planned Simulators for Space Research," "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995), p. 377; A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.
Cable system which supports the test subject on the Reduced Gravity Walking Simulator. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil described the purpose of the simulator as follows: "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995); A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.
Test subject wearing the pressurized "space" suit for the Reduced Gravity Walking Simulator located at the Lunar Landing Facility. The purpose of this simulator was to study the subject while walking, jumping or running. Researchers conducted studies of various factors such as fatigue limit, energy expenditure, and speed of locomotion. A.W. Vigil described the purpose of the simulator in his paper "Discussion of Existing and Planned Simulators for Space Research," "When the astronauts land on the moon they will be in an unfamiliar environment involving, particularly, a gravitational field only one-sixth as strong as on earth. A novel method of simulating lunar gravity has been developed and is supported by a puppet-type suspension system at the end of a long pendulum. A floor is provided at the proper angle so that one-sixth of the subject's weight is supported by the floor with the remainder being supported by the suspension system. This simulator allows almost complete freedom in vertical translation and pitch and is considered to be a very realistic simulation of the lunar walking problem. For this problem this simulator suffers only slightly from the restrictions in lateral movement it puts on the test subject. This is not considered a strong disadvantage for ordinary walking problems since most of the motions do, in fact, occur in the vertical plane. However, this simulation technique would be severely restrictive if applied to the study of the extra-vehicular locomotion problem, for example, because in this situation complete six degrees of freedom are rather necessary. This technique, in effect, automatically introduces a two-axis attitude stabilization system into the problem. The technique could, however, be used in preliminary studies of extra-vehicular locomotion where, for example, it might be assumed that one axis of the attitude control system on the astronaut maneuvering unit may have failed." -- Published in James R. Hansen, Spaceflight Revolution: NASA Langley Research Center From Sputnik to Apollo, (Washington: NASA, 1995), p. 377; A.W. Vigil, "Discussion of Existing and Planned Simulators for Space Research," Paper presented at Conference on the Role of Simulation in Space Technology," Blacksburg, VA, August 17-21, 1964.
In the center foreground of this 1953 hangar photo is the YF-84A (NACA 134/Air Force 45-59490) used for vortex generator research. It arrived on November 28, 1949, and departed on April 21, 1954. Beside it is the third D-558-1 aircraft (NACA 142/Navy 37972). This aircraft was used for a total of 78 transonic research flights from April 1949 to June 1954. It replaced the second D-558-1, lost in the crash which killed Howard Lilly. Just visible on the left edge is the nose of the first D-558-2 (NACA 143/Navy 37973). Douglas turned the aircraft over to NACA on August 31, 1951, after the contractor had completed its initial test flights. NACA only made a single flight with the aircraft, on September 17, 1956, before the program was cancelled. In the center of the photo is the B-47A (NACA 150/Air Force 49-1900). The B-47 jet bomber, with its thin, swept-back wings, and six podded engines, represented the state of the art in aircraft design in the early 1950s. The aircraft undertook a number of research activities between May 1953 and its 78th and final research flight on November 22, 1957. The tests showed that the aircraft had a buffeting problem at speeds above Mach 0.8. Among the pilots who flew the B-47 were later X-15 pilots Joe Walker, A. Scott Crossfield, John B. McKay, and Neil A. Armstrong. On the right side of the B-47 is NACA's X-1 (Air Force 46-063). The second XS-1 aircraft built, it was fitted with a thicker wing than that on the first aircraft, which had exceeded Mach 1 on October 14, 1947. Flight research by NACA pilots indicated that this thicker wing produced 30 percent more drag at transonic speeds compared to the thinner wing on the first X-1. After a final flight on October 23, 1951, the aircraft was grounded due to the possibility of fatigue failure of the nitrogen spheres used to pressurize the fuel tanks. At the time of this photo, in 1953, the aircraft was in storage. In 1955, the aircraft was extensively modified, becoming the X-1E. In front o
Two companies have successfully commercialized a specialized welding tool developed at the Marshall Space Flight Center (MSFC). Friction stir welding uses the high rotational speed of a tool and the resulting frictional heat created from contact to crush, "stir" together, and forge a bond between two metal alloys. It has had a major drawback, reliance on a single-piece pin tool. The pin is slowly plunged into the joint between two materials to be welded and rotated as high speed. At the end of the weld, the single-piece pin tool is retracted and leaves a "keyhole," something which is unacceptable when welding cylindrical objects such as drums, pipes and storage tanks. Another drawback is the requirement for different-length pin tools when welding materials of varying thickness. An engineer at the MSFC helped design an automatic retractable pin tool that uses a computer-controlled motor to automatically retract the pin into the shoulder of the tool at the end of the weld, preventing keyholes. This design allows the pin angle and length to be adjusted for changes in material thickness and results in a smooth hole closure at the end of the weld. Benefits of friction stir welding, using the MSFC retractable pin tool technology, include the following: The ability to weld a wide range of alloys, including previously unweldable and composite materials; provision of twice the fatigue resistance of fusion welds and no keyholes; minimization of material distortion; no creation of hazards such as welding fumes, radiation, high voltage, liquid metals, or arcing; automatic retraction of the pin at the end of the weld; and maintaining full penetration of the pin.