Apollo 13 Movie
...Houston we've had a problem!



Grumman Aerospace, builders of the LM, sent a fake bill for US $312,421 to North American Rockwell, builders of the CSM, for call-out charges consumables, and towing the CSM home.


The lunar regolith 'Moondust' is a very fine dust from rocks pulverised by many high-energy impacts. Apollo astronauts have often said that the Moondust smells like gunpowder.



A | B | C | D | E | F | G | K | L | M | N | P | R | S | T | U | V


Greco-Roman God of light and the Sun, truth, knowledge, prophecy, medicine, music, poetry, and archery.

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BUCDR - Backup Mission Commander
Astronaut on backup crew to act as a replacement CDR in case injury or illness should befall the prime crew CDR.

BUCMP - Backup Command Module Pilot
Astronaut on backup crew to act as a replacement CMP in case injury or illness should befall the prime crew CMP.

BULMP - Backup Lunar Module Pilot
Astronaut on backup crew to act as a replacement LMP in case injury or illness should befall the prime crew LMP.

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CAPCOM - Capsule Communicator
Primary mission controller linking astronauts and MCC. In the Apollo era this role was invariably performed by an astronaut.

CAPE - Cape Canaveral
From the Spanish Cabo de Cañaveral (Cape of Canes), a cape on the east Atlantic 'Space' coast of Florida, site of Cape Canaveral Air Force Station and the early space launches of Projects Mercury and Gemini. A metonym for the principal site of US manned space launches.

CDR - Mission Commander
Most senior astronaut assigned mission command responsibility. On lunar landing missions the CDR would manually fly the LM and execute EVA on the lunar surface.

CM - Command Module
Spacecraft module serving as the main command, control, and communications center for most of the mission. Supplemented by the SM, it provides all life support elements for three crewmen in the mission environments and for their safe return to the earth's surface. It is capable of attitude control about three axes and some lateral lift translation at high velocities in earth atmosphere.

CMP - Command Module Pilot
Experienced astronaut with responsibility for flying the CM in earth orbit and solo in lunar orbit while the CDR and LMP are on the lunar surface.

CSM - Command Service Module
The combined unified Command and Service Modules as one entity.

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Change in spacecraft velocity

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EECOM - Electrical, Environmental & Communications
Mission controller stationed in MOCR with responsibility for monitoring critical fuel / power / gas / life support levels.

EI - Entry Interface
Descent into Earth's atmosphere commencing at 400,000ft above Earth surface. The entry corridor is a very narrow angular region in which a spacecraft gets one chance to dissipate the enormous kinetic energy imparted at launch. Too steep an approach angle and the CM will burn up through air friction - too shallow and the CM will skip off the Earth's atmosphere back out into space. Apollo CM entry velocities were approximately 25,000mph.

EVA - Extra Vehicular Activity
Action performed by an astronaut outside a spacecraft. Conventionally known as a 'Spacewalk'.

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FD - Flight Director
Mission controller with overall responsibility for crew safety (Priority 1) and mission success (Priority 2).

FIDO - Flight Dynamics Officer
Mission controller stationed in MOCR front-row 'Trench' with responsibility for planning the trajectory of the spacecraft.

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GUIDO - Guidance Officer
Mission controller stationed in MOCR front-row 'Trench' with responsibility for monitoring spacecraft navigation systems and guidance software.

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KSC - Kennedy Space Center
Principal site / 'Moonport' of US manned lunar mission launch operations during Project Apollo. Actually located on Merritt Island, KSC is commonly conflated with the adjacent Cape Canaveral.

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LM - Lunar Module
Spacecraft module designed to transport two astronauts safely from the CSM, in lunar orbit, to the lunar surface, and return them to the orbiting CSM. The LM held limited independent reserves of oxygen, water, and electrical power sufficient for several days on the lunar surface.

LMP - Lunar Module Pilot
Astronaut with responsibility for monitoring LM flight systems and executing EVA with CDR on the lunar surface.

LOR - Lunar-Orbit Rendezvous
Principal lunar landing mission concept which involved boosting the CSM-LM into Earth orbit and to the Moon, and rendezvous of the LM with the CSM in Lunar Orbit.

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MCC - Mission Control Center
Principal location for post-launch control of all NASA manned space flight and based at MSC Houston, TX, USA.

MOCR - Mission Operations Control Room
Principal location of mission controllers at MCC Houston.

MSC - Manned Spacecraft Center
Former name of Johnson Space Center in Houston, TX, USA.

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NASA - National Aeronautics & Space Administration
US Government organisation founded in 1958 to co-ordinate aeronautical and astronautical research operations.

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PAO - Public Affairs Officer
Primary liaison between MCC / NASA and the press, TV networks, and the general public. The Voice of Mission Control providing explanatory mission commentary.

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RETRO - Retrofire Officer
Mission controller stationed in the MOCR front-row 'Trench' with responsibility for determining return and re-entry manoeuvres.

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SM - Service Module
Module providing the main spacecraft propulsion and maneuvering capability during a mission. The SM provides most of the spacecraft consumables (oxygen, hydrogen, water, propellant), supplements environmental, electrical power, and propulsion requirements of the CM, and has multiple communication antennas.

Speaker box relaying air-to-ground voice communications, provided to an astronaut family during a mission.

SURG - Flight Surgeon
Mission controller and physician with responsibility for monitoring health / performance of astronaut flight crew.

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TEC - Trans-Earth Coast
Voyage from the Moon to the Earth

TLC - Trans-Lunar Coast
Voyage from the Earth to the Moon

The front row of consoles in MOCR MCC Houston and the first line of defense in manned space flight. The 'Trench' was named by RETRO controller John Llewellyn (a USMC veteran of the Korean War) and was manned by the RETRO, FIDO, and GUIDO controllers.

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US - United States
United States of America

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V - Velocity
Spacecraft speed along a vector.

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