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