Images of the various stages of the rocket being assembled, the transport track, launch, staging, in-flight camera images and recovery. An animation of the planned mission steps is displayed. After each flight, problems are described (Gordon Cooper tests the vibrations of the POGO) and solutions are presented.
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CHAPTERS
00:00 Introduction
00:26 Apollo 4 objectives
03:06 Apollo 4 flight plan
05:02 Apollo 4 test
07:58 Apollo 4 launch
3:10 p.m. Results of the Apollo 4 mission
4:34 p.m. Apollo 6 objectives
6:39 p.m. Launch of Apollo 6
11:47 p.m. Results of the Apollo 6 mission
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The images were upscaled by AI (Topaz AI) in certain segments, in addition to the usual color correction. Ambient audio has been recreated based on historical elements.
Sequences are presented wherever possible in the appropriate mission context.
Historical narration (from mission commentaries and NASA documentaries and progress reports) is used to attempt to capture the feeling of the times. Language and attitudes must be considered in this context.
Searching, cleaning, editing and processing by Retro Space HD.
Apollo 4 (November 9, 1967), also known as SA-501, was the first uncrewed flight of the American Apollo program and the first test of the Saturn V launch vehicle, the rocket that would be used to send astronauts. towards the Moon.
Apollo 4 was an "all-up" test, meaning that all rocket stages and spacecraft were fully functional during the initial flight, a first for NASA.
The original launch date was planned for late 1966, but was delayed to November 9, 1967, due to myriad problems with various elements of the spacecraft and difficulties during pre-flight testing.
The mission ran aground in the Pacific Ocean just under nine hours after launch, having achieved its objectives. NASA considered the mission a complete success, as it proved that Saturn V worked, which was an important step towards achieving the main goal: landing astronauts on the Moon and returning them safely, before the end of the 1960s.
Apollo 6 (April 4, 1968), also known as AS-502, was the third and final uncrewed flight of the United States' Apollo program and the second test of the Saturn V launch vehicle.
The flight plan called for a translunar injection followed by a direct return using the service module's main engine, with a total flight duration of approximately 10 hours. Instead, a phenomenon known as pogo oscillation damaged some of the Rocketdyne J-2 engines in the second and third stages by rupturing internal fuel lines, causing two second stage engines to shut down prematurely. The vehicle's onboard guidance system was able to compensate by burning the second and third stages longer, although the resulting parking orbit was more elliptical than expected. The damaged third stage engine failed to restart for translunar injection. Flight controllers chose to repeat the flight profile of the previous Apollo 4 test, thereby achieving a high orbit and high-speed return. Despite the engine failures, the flight gave NASA enough confidence to use the Saturn V for crewed launches (Apollo 8 would fly in December 1968).
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