Installation of 1D2D-X probe in the IRT. Probe supplied by Science Engineering Associates (SEA). SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop Instrumentation Test - Particle Size Measurements. Particle Size Distribution Entry, June 8-11, 2026 Large Drop Testing in IRT

Ice collection seen on un-heated sections of the 1D2D-X ice drop detection probe in the test section of the IRT (Icing Research Tunnel). Drop Size Probe testing - SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop) Instrumentation Test in IRT (Icing Research Tunnel) – Particle Size Distribution Entry, June 8-11, 2026 Large Drop Testing in IRT

Ice collection seen on un-heated sections of the 1D2D-X ice drop detection probe in the test section of the IRT (Icing Research Tunnel). Drop Size Probe testing - SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop) Instrumentation Test in IRT (Icing Research Tunnel) – Particle Size Distribution Entry, June 8-11, 2026 Large Drop Testing in IRT

SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop Instrumentation Test - Particle Size Measurements. Installation of 1D2D-X probe in the IRT. Probe supplied by Science Engineering Associates (SEA)

Ice collection seen on un-heated sections of the 1D2D-X ice drop detection probe in the test section of the IRT (Icing Research Tunnel). Drop Size Probe testing - SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop) Instrumentation Test in IRT (Icing Research Tunnel) – Particle Size Distribution Entry, June 8-11, 2026 Large Drop Testing in IRT

SFD (Subsonic Flight Demonstrator) of SLD (Super Large Drop) testing in IRT (Icing Research Tunnel). Drop size shown on computer from detection probe during test. Cloud drops imaged by probe displayed on computer screen

SFD (Subsonic Flight Demonstrator) test of SLD (Supercooled Large Drop) Instrumentation Test - Particle Size Measurements Testing in IRT (Icing Research Tunnel). Installation of probe in the IRT. Installation of 1D2D-X probe in the IRT. Probe supplied by Science Engineering Associates (SEA)

SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop) Instrumentation Test - Particle Size Measurement in the IRT (Icing Research Tunnel), June 8-11, 2026. Drop size shown on computer from Drop Sizing Probe seen in the IRT test section.

SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop) Instrumentation Test - Particle Size Measurement in the IRT (Icing Research Tunnel), June 8-11, 2026. Drop size shown on computer from Drop Sizing Probe seen in the IRT test section.

Ice collection seen on un-heated sections of the ice drop detection probe in the test section of the IRT (Icing Research Tunnel). Drop Size Probe testing - SFD (Subsonic Flight Demonstrator) of SLD (Supercooled Large Drop) Instrumentation Test in IRT (Icing Research Tunnel) – Particle Size Distribution Entry, June 8-11, 2026