Fourth crewed lunar landing, at Hadley–Apennine. First extended Apollo mission, carrying lunar orbital Scientific Instrument Module and Lunar Roving Vehicle. Streigel, Mary (July 1, 2015). "The Space Age In Construction". National Park Service. Archived from the original on June 19, 2020 . Retrieved October 4, 2019.

a b c d e f Wright, Mike. "Three Saturn Vs on Display Teach Lessons in Space History". NASA. Archived from the original on November 15, 2005 . Retrieved February 10, 2011. a b c "Apollo Program Budget Appropriations". NASA. Archived from the original on January 15, 2012 . Retrieved January 16, 2008.

Second crewed trans-lunar injection of complete Apollo spacecraft with LM; Only Saturn V launched from Pad 39B.

Walker, Joel. "Saturn V Second Stage". nasa.gov. NASA. Archived from the original on November 12, 2020 . Retrieved July 6, 2020. The components feature raised panel lines appropriate to the type – lots of corrugated surface detail, perhaps not as fine as, say, the newer kits from this manufacturer. The Apollo Saturn V is an iconic type and is certainly impressive as you can see from the video at the start of this review, so this project is all going to be about fine preparation and that finished paint job – a nice weathering challenge!About 90 seconds before the second stage cutoff, the center engine shut down to reduce longitudinal pogo oscillations. At around this time, the LOX flow rate decreased, changing the mix ratio of the two propellants and ensuring that there would be as little propellant as possible left in the tanks at the end of second stage flight. This was done at a predetermined delta-v. [35]