First U.S. military rocket-powered airplane, the Rocket Ram, was tested as a glider by John Myers. It was equipped with an Aerojet XCAL-200 engine, using monoethylanline as fuel. References: 17 .
Dummy firing, no upper-air research experiment.
The National Academy of Sciences established a Technical Panel for Earth Satellite Program, with Richard E. Porter serving as chairman. References: 483 .
Full-scale test version of the Snark guided missile (XSM62) successfully recovered for the first time after a flight from Cape Canaveral. References: 17 .
Launched at 1429 hours EST from AMR. The flight was successful, the impact point was 445 metres long and 452 meters to the right of the predicted impact point, giving a radial miss distance of. 634 meters. This was the first flight test of the NAA A-6 engine with a sea level thrust of 78,000 pounds. Missed aimpoint by 572 m. References: 439 .
First flight with propellant in tank 4 of the cruise stage. Boosters featured an improved main engines without OT-155 valve (S2.1150 replacing S2.1100). The cruise stage used the improved RD-012U ramjet in place of the previous RD-012. The first stage operated faultlessly and separation was normal without vibrations. Ignition of the cruise stageo ccurred at Mach 2.87 at 16.8 km altitude. The SVD Air Sensor System worked abnormally, so the decision was made to disconnect the SVD sensors and fly the mission using only the astronavigation system and hold inertial velocity to Mach 3.15-3.2. The flight continued to T+10 minutes 17 seconds and the planned flight program was completed.
Last of two Atlas/Burner II space launches from Vandenberg AFB (first launch on 16 August 1968). References: 88 .
Manned three crew. Docked with Mir. Mir Expedition EO-10. Transported to the Mir manned orbital station an international crew comprising the cosmonauts A Volkov (USSR), T Aubakirov (USSR) and F. Viehbock (Austria), to conduct joint scientific and technical research with the cosmonauts A. Artsebarsky and S Krikalev. Austria paid $ 7 million for mission. Kazakh cosmonaut added at last minute. On March 25, Volkov, Krikalyov and Flade undocked from the front port in Soyuz TM-13 and landed in Kazakhstan at 08:51 GMT on March 25. References: 1 , 2 , 6 , 51 .