BO-105 helicopter pilot & cockpit during in flight rotorcraft acoustics program Distance Versus Noise Calibration over Livermore - Central Valley, CA. The YO-3A flying the acoustics test can just be seen through cockpit window.

YO-3A (NASA 718) and BO-105 helicopter over Livermore Valley, CA: In-flight rotorcraft acoustics program (distance versus noise calibration)

YO-3A during in flight rotorcraft acoustics program Distance Versus Noise Calibration test on BO-105 over Livermore - Central Valley, CA

YO-3A (NASA-718) & BO-105 helicopter over Livermore Valley for in flight Rotorcraft Acoustics Program - distance versus noise calibration

view of YO-3A from cockpit of BO-105 helicopter during in flight rotorcraft acoustics program Distance Versus Noise Calibration over Livermore - Central Valley, CA

NASA Ames Graphics MAJOR NATIONAL FULL-SCALE AERODYNAMICS COMPLEX (NFAC) ROTORCRAFT TESTS SINCE 1977 COMPOSITE. Sikosky S-76 Rotor AC77-0045, Bell 222 fuselage AC77-1388-1, Bell XV-15 Aircraft AC78-0579-3, Kaman CCR Rotor AC78-0731-1, Lokcheed X-Wing Rorotr AC79-0367-4, Boeing VERTOL BMR Rotor AC80-0120-2, Sikordky ABC Helicopter AC80-0467-17, MBB BO-105 Rotor AC83-0309-157