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Part of MOBEV



American manned lunar rover. Study 1966. The MOBEV R3DE Extended Traverse Vehicle was a 90-Day MOBEX, a manned mobile laboratory used for exploration of the moon.

Status: Study 1966. Gross mass: 8,344 kg (18,395 lb).

The vehicle provided complete life support capabilities for its 3-man crew during a 90-day, 3425-km mission.

The vehicle carried 1500 kg of scientific payload, and had an average driving speed of 10 kin/hr.

The R3DE was delivered to the moon by an LLV, and was capable of being stored for as long as six months before commencing its mission. Prior to the crew's arrival, the vehicle was remotely unloaded and driven to the site of the crew's landing. The 90-day mission commenced with the arrival of the crew.

The R3DE power subsystem consisted of an isotopic power supply as well as an AgCd battery. The isotopic power supply was rated at 3.45 kW. A battery was used during peak power demands above the isotopic output and was recharged during periods of low power requirements.

The cabin subsystem included a horizontally-oriented cylindrical cabin containing an airlock, five external viewports, and the crew stations. Controls and displays were provided at the two-position driving cockpit, the scientific station, and the aft emergency driving station located in the airlock. Meteoroid protection was provided by the cabin structure.

The mobility subsystem consisted of four metal-elastic wheels individually powered by a motor and transmission, steering actuators located in the front wheel hubs, and suspension and deployment mechanisms.

The life support/thermal control subsystem consisted of the crew provisions and the Environmental Control System (ECS). The crew provisions included equipment and expendables associated with the personal needs of the astronauts. The ECS provided pressurization, atmosphere control, cabin and suit temperature control, humidity control, contaminant control, and water management.

The astrionics subsystem comprised the communications, navigation, TV, and illumination equipment. The communications equipment provided for S-band communications between the vehicle and earth, and for local lunar communications at VHF between the vehicle and the command module, EVA astronaut, or other lunar terminals. The navigation equipment utilized two navigation techniques: a position fix mode and a dead-reckoning computation. The TV equipment included a TV camera providing a forward-looking stereo pair; a single, monoptic camera for rear viewing; and three cameras for cabin internal viewing and monitoring. Illumination equipment was provided to aid in lunar-night operations.


Vehicle Type         ----MOLAB----  --------MOBEX-------
Configuration        RZC(1)E  R3CE    R3AE   R3BE   R3DE
Crew or Duration       2 Man 3 Man  28 Day 42 day 90 day
Delivered Mass (kg)     2975  3231    4909   6923   6930
Scientific Payload (kg)  320   320     700   1500   1500
Crew Supplied Mass (kg)  139   169     222    286    988
Ttll Operating Mass(kg) 3398  3826    5757   7646   8344
Range (km)               400   400     800   1600   3425
Avg Max Speed (km/hr}     10    l0      10     10     10
Obstacle (m)             1.1   1.1     1.1    1.1    1.1
Development Cost ($mn)   307   311     324    326    318
Development Time (mos.)   54    56      56     58     58

Crew Size: 3.

Family: Lunar Rovers, Moon. Country: USA. Agency: NASA, Bendix.
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