Editing Apollo Lunar Module (section)

===Astronaut training===
[[File:Lunar Landing Research Vehicle in Flight - GPN-2000-000215.jpg|thumb|upright|[[Lunar Landing Research Vehicle]] (LLRV) during a test flight]]

Comparing landing on the Moon to "a hovering operation", [[Gus Grissom]] said in 1963 that although most early astronauts were fighter pilots, "now we're wondering if the pilot making this first moon landing shouldn't be a highly experienced helicopter pilot".<ref name="grissom196302">{{Cite interview |last=Grissom |first=Gus |interviewer=John P. Richmond Jr. |title=The MATS Flyer Interviews Major Gus Grissom |url=https://books.google.com/books?id=wZ7RZyYIsmIC&pg=PA4 |access-date=June 28, 2020 |work=The MATS Flyer |publisher=Military Air Transport Service, United States Air Force |date=February 1963 |pages=4-7 |archive-date=July 26, 2020 |archive-url=https://web.archive.org/web/20200726073159/https://books.google.com/books?id=wZ7RZyYIsmIC&lpg=PA7&ots=JIkBJkm3cs&&pg=PA4#v=onepage&f=true |url-status=live }}</ref> To allow astronauts to learn lunar landing techniques, NASA contracted [[Bell Aerosystems]] in 1964 to build the [[Lunar Landing Research Vehicle]] (LLRV), which used a [[gimbal]]-mounted vertical jet engine to counter five-sixths of its weight to simulate the Moon's gravity, in addition to its own hydrogen peroxide thrusters to simulate the LM's descent engine and attitude control. Successful testing of two LLRV prototypes at the [[Dryden Flight Research Center]] led in 1966 to three production Lunar Landing Training Vehicles (LLTV) which along with the LLRV's were used to train the astronauts at the Houston Manned Spacecraft Center. This aircraft proved fairly dangerous to fly, as three of the five were destroyed in crashes. It was equipped with a rocket-powered ejection seat, so in each case the pilot survived, including the first man to walk on the Moon, [[Neil Armstrong]].<ref name="ugly">{{cite web|url=https://history.nasa.gov/alsj/alsj-LLRV.html|title=LLRV Monograph|access-date=July 12, 2017|archive-date=December 25, 2017|archive-url=https://web.archive.org/web/20171225232405/https://history.nasa.gov/alsj/alsj-LLRV.html|url-status=live}}</ref>