First human flight into the mesosphere
Flight 35 Mission type Test flight Operator USAF/NASA Apogee 169,600 feet (51.7 km; 32.12 mi) Spacecraft properties Spacecraft X-15 Manufacturer North American Crew Crew size 1 Members Joseph A. Walker Start of mission Launch date March 30, 1961 (1961-03-30Z ) UTC End of mission Landing date March 30, 1961 (1961-03-31Z ) UTC Landing site Rogers Dry Lake ,Edwards
Flight 35 of theNorth American X-15 was a test flight conducted byNASA and theUS Air Force on March 30, 1961.[ 1] Joseph A. Walker to an altitude of 169,600 feet (51.7 km; 32.12 mi) surpassing thestratopause .[ 2] mesosphere .[ 3] Yuri Gagarin became the first man inspace onVostok 1 on April 12, 1961.[ 4] into space . The flight landed atEdwards Air Force Base .
^ "X-15 Flight Log".Proceedings of the X-15 First Flight 30th Anniversary Celebration (PDF) (Technical report). Edwards, California:NASA . June 8, 1989.Archived (PDF) from the original on October 25, 2023. RetrievedOctober 25, 2023 . ^ McDowell, Jonathan (1994)."The X-15 Spaceplane" (PDF) .Quest . Vol. 3, no. 1.Archived (PDF) from the original on October 25, 2023. RetrievedAugust 16, 2023 . ^ McDowell, Jonathan."Jonathan McDowell's Additions to English" .Jonathan's Space Report .Archived from the original on December 10, 2022. RetrievedOctober 25, 2023 . ^ Kumpa, Peter J. (April 13, 1961)."Cosmonaut is landed in good shape" .The Baltimore Sun Archived from the original on October 25, 2023. RetrievedOctober 25, 2023 .
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