#lunar module descent engine

[lonestarflight]

Southeast view of Apollo 15 Lunar Module (LM-10) Falcon, with the Lunar Roving Vehicle (LRV), Apollo Lunar Surface Experiments Package (ALSEP) and Hill 305 in the background. Photographed during the second Extravehicular Activity (EVA 2) of the Apollo 15 mission.

Decreased clearance led to buckling of the extended descent engine nozzle on the landing of Apollo 15.

"In order to extend landing payload weight and lunar surface stay times, the last three Apollo Lunar Modules were upgraded by adding a 10-inch (25 cm) nozzle extension to the engine to increase thrust. The nozzle exhaust bell, like the original, was designed to crush if it hit the surface. It never had during the first three landings, but did buckle on the first Extended landing, Apollo 15."

-information from Wikipedia: link

Date: August 1, 1971

NASA ID: AS15-87-11839, AS15-87-11842, AS15-88-11882

[lonestarflight]

"Program administrator Albert Anderson is seen here with rocket engines involved in the Apollo Lunar Module Project."

Date: May 18, 1967

Long Island Daily Press Identifier: aql:16810 ldp-000238 ldp-000238

[lonestarflight]

"Grumman employee Louis Esposito checks a connection on the lunar module's rocket descent engine, at the Grumman Aircraft Engineering plant in Bethpage."

Date: March 18, 1969

Long Island Daily Press Identifier: aql:16844 ldp-000255 ldp-000255

[lonestarflight]

Concept art of Apollo 5 Lunar Module (LM-1) firing its descent propulsion system (DPS).

Date: January 22, 1968

source

[lonestarflight]

Cutaway diagram of the Apollo spacecraft, S-IVB, S-II, S-IC, J-2 and F-1 engine of the Saturn V.

Date: 1967

NASA ID: 0100985, 0101138, 0101139, 0101140, 0100983, 9801810, 9801770, 0100981, 9801771