Apollo 15 the ninth manned mission in the United States' Apollo program,.

Avro Canada VZ-9 Avrocar3 × Continental J69-T-9 turbojet engines

Project Gemini the NASA's second human spaceflight program.

Lockheed Martin Titan IV the "largest unmanned space booster used by the Air Force.Stage 0 consisted of two solid-rocket motors. Stage 1 used an LR87-AJ-11 liquid-propellant rocket engine. Stage 2 used the LR91-AJ-11 liquid-propellant engine. Optional upper stages included the Centaur and Inertial Upper Stage.Titan IVTitan IVTitan IV


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