MARS OBSERVER Launch - Commercial Titan III Last Flight (1992/09/23) - updated sound

(Version with updated sound) The launch of Mars Observer on September 25, 1992, the final flight of a Commercial Titan III vehicle. Spacecraft testing and integration footage is also shown, along with some information about the flight sequence (max q, booster jettison, etc). The SD video feed was color corrected and cleaned up. Audio based on Titan III launch sound recordings from NASA but incorrect. Will be fixed on an updated video. Research, cleanup and audio/image processing by Retro Space HD. ========================================= Mars Observer was launched on September 25, 1992 at 17:05:01 UTC by the National Aeronautics and Space Administration from Space Launch Complex 40 at the Cape Canaveral Air Force Station in Florida, aboard a Commercial Titan III CT-4 launch vehicle. The complete burn sequence lasted for 34 minutes after a solid-fuel Transfer Orbit Stage placed the spacecraft into an 11-month, Mars transfer trajectory, at a final speed of 5.28 km/s with respect to Mars. Mars Observer was scheduled to perform an orbital insertion maneuver on August 24, 1993, but contact with the spacecraft was lost on August 21, 1993. The likely reason for the spacecraft failure was the leakage of fuel and oxidizer vapors through the improperly designed PTFE check valve to the common pressurization system. During interplanetary cruise, the vapor mix had accumulated in feed lines and pressurant lines, resulting in explosion and their rupture after the engine was...