rocket performance, biological experiments, air density, day airglow, ionosphere, sodium studies, nitric oxide to produce a sporadic E layer, nitric oxide attempt to recombine atomic oxygen, sodium cloud ionization, solar spectrum and atmospheric composition. All but the last X-8 mission were flown from Holloman AFB. The last X-8 was flown for the Signal Corps Electronic Laboratory from Fort Churchill, Canada on 11/12/1956 and studied temperature and winds. After the X-8s Air Force Aerobees were known by their engine model numbers, either AJ-10-27 or AJ-10-34. Variants X-8 - 30 X-8A - 30 X-8B - 1 X-8C - 2 X-8D - 3 Specifications (general) See also References External links Aerojet General RM-84/PWN-2 Aerobee-Hi (and earlier Aerobee variants) Sounding rockets of the United States X-8 Unmanned aerial vehicles of the United States X-008