#lm-10

"Astronaut James B. Irwin, lunar module pilot, gives a military salute while standing beside the deployed United States flag during the Apollo 15 lunar surface Extravehicular Activity (EVA) at the Hadley-Apennine landing site. The flag was deployed toward the end of EVA-2 (start of EVA-3). The Lunar Module (LM) "Falcon" is in the center. On the right is the Lunar Roving Vehicle (LRV). This view is looking almost due south. Hadley Delta in the background rises approximately 4,000 meters (about 13,124 feet) above the plain. The base of the mountain is approximately 5 kilometers (about 3 statute miles) away.

This photograph was taken by astronaut David R. Scott, Apollo 15 commander."

Date: August 2, 1971

"Astronaut James B. Irwin, lunar module pilot, works at the Lunar Roving Vehicle (LRV) during the first Apollo 15 lunar surface extravehicular activity (EVA-1) at the Hadley-Apennine landing site. The Lunar Module (LM) 'Falcon' is on the left. The undeployed Laser Ranging Retro Reflector (LR-3) lies atop the LM's Modular Equipment Stowage Assembly (MESA). This view is looking slightly west of south. Hadley Delta and the Apennine Front are in the background to the left. St. George crater is approximately 5 kilometers (about 3 statute miles) in the distance behind Irwin's head."

Date: August 1, 1971

Grumman concept art of the Lunar Roving Vehicle (Lunar Rover) deployment for Apollo 15.

The Apollo 14 Lunar Module (LM-8) Antares (right) undergoes checkout with Apollo 15's LM-10 Falcon (left) in the background.

Date: October 16, 1970

The Grumman Aerospace Corporation was awarded the contract on November 7, 1962. Originally designated Lunar Excursion Module (LEM), NASA ordered 25 lunar modules (10 test articles and 15 production models) for testing and landing on the moon. This was to go with the 15 Saturn Vs and Apollo CSMs. They were assembled in Grumman's factory in Bethpage, New York.

"There were initially four major subcontractors: Bell Aerosystems (ascent engine), Hamilton Standard (environmental control systems), Marquardt (reaction control system) and Rocketdyne (descent engine).

The Primary Guidance, Navigation and Control System (PGNCS) was developed by the MIT Instrumentation Laboratory; the Apollo Guidance Computer was manufactured by Raytheon (a similar guidance system was used in the command module). A backup navigation tool, the Abort Guidance System (AGS), was developed by TRW."

-Information from Wikipedia: link

After the Gemini 3 spacecraft was dubbed Molly Brown by Gus Grissom, NASA forbade naming spacecraft. For Apollo 9, this changed due to mission controllers in Houston needing a way to differentiate between the two spacecraft.

Between 1969 and 1972, Grumman produced a series of insignias for their Lunar Modules which were distributed in limited quantities to their employees in the form of decals and prints.

Apollo 5 (LM-1): none

Apollo 3 (and later 2) (LM-2): Never used, intended for a mission similar to Apollo 5. The success of LM-1 led to the cancellation.

Apollo 9 (LM-3): Spider

Apollo 10 (LM-4): Snoopy. The LM ascent stage in heliocentric orbit and is the only known one to have survived intact

Apollo 11 (LM-5): Eagle (originally named haystack)

Apollo 12 (LM-6): Intrepid

Apollo 13 (LM-7): Aquarius

Humorously, Grumman sent North American (the manufacturer of the Apollo Command and Service Module) a tow bill sometime after the crew returned. North American retorted back saying they've never sent them a tow bill for the previous missions.

Apollo 14 (LM-8): Antares.

Apollo 15 (originally) (LM-9): never used, on display the Kennedy Space Center.

Intended for Apollo 15 and was the last H-type mission. When Apollo 18 was cancelled, it was decided to make Apollo 15 the first J-type mission.

Apollo 15 (LM-10): Falcon, originally intended for Apollo 16. First of the extended stay series.

Apollo 16 (LM-11): Orion, originally intended for Apollo 17

Apollo 17 (LM-12): Challenger, originally intended for Apollo 18.

Note: this name was reused for the second operational Space Shuttle Orbiter. After the Challenger Disaster, NASA officially retired the name.

Apollo 18 (LM-13): never used, originally intended for 19. It was partially completed when Apollo 18 and 19 were cancelled. Later restored by Grumman workers and is on display at the Cradle of Aviation History and Education Center.

Apollo 19 (LM-14): never used, originally intended for Apollo 20. It was partially completed when Apollo 18 and 19 were cancelled. What was completed, was later scrapped.

Apollo 20 (LM-15): never used, partially completed, scrapped. When Apollo 20 was cancelled, it was intended for modification into the Apollo Telescope Mount. Later the Telescope Mount was integrated into Skylab and this dedicated mission was cancelled.

source, source, source, source, source

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

"The Apollo 15 Saturn V is seen from a camera located at the mobile launcher's 360-foot level at Launch Pad 39A during the countdown demonstration test (CDDT). Commander David R. Scott, Lunar Module Pilot James B. Irwin, and Command Module Pilot Alfred M. Worden, Jr. participated in the test as a final dress rehearsal for the launch to the moon."

Note: "Liquid oxygen vents from Apollo 15 Saturn V space vehicle during 'wet' portion of Countdown Demonstration Test"

Date: July 13, 1971

"Lightning streaks through the sky around the Apollo 15 stack of hardware prior to the Apollo 15 launch. The huge 363-feet tall Apollo 15 (CSM-112/LM-10/SA-510) space vehicle is scheduled to launch from Pad A, Launch Complex 39, at 9:34:00:79 p.m. (EDT) on July 26, 1971."

Date: July 25, 1971