Modular Equipment Transporter

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Alan Shepard stands next to the Modular Equipment Transporter.

The Modular Equipment Transporter (MET) was a two-wheeled, hand-pulled vehicle that was used as an equipment hauling device on traverses across the lunar surface. Designed after Apollo 12 astronauts Pete Conrad and Alan Bean had difficulties lugging their equipment significant distances to and from their Lunar Module, the MET primarily functioned as a portable workbench with a place for hand tools and their carrier, cameras, spare camera magazines, rock sample bags, environmental sample containers, and the portable magnetometer with its sensor and tripod.[1] It was carried on Apollo 14 and planned to be used on Apollo 15, but was used only on Apollo 14, since Apollo 15's mission was changed to be the first to employ the motorized Lunar Roving Vehicle, which transported both astronauts and equipment.

Astronauts nicknamed the MET "the rickshaw". It was pulled using a pulling bar in the front. The majority of the payload of the MET consisted of the Apollo Lunar Surface Experiments Package (ALSEP).[2] The performance of the MET was described as "adequate".[3] In fact, astronauts Alan Shepard and Edgar Mitchell were disappointed by the MET's performance. During one of the traverses they had to carry the MET together because it was too difficult to pull the MET through the rough lunar terrain.

Design criteria

Data from Operator's Manual By General Electric[4]

Dimensional limits

  • Max. Net Weight (Empty): 30 Earth lbs
  • Max. Payload Capability: 340 Earth lbs
  • Workable height: 30 in
  • Stowage Envelope: 28" x 36" x 8"

Operation specifications

  • Nominal Pulling Speed: 4-7 mph
  • Nominal Draw Bar Pull: 3-5 mph
  • Design Traverse 20,000 ft
  • Capable of Traversing: up to 4" Diameter Rocks
  • Tire Temperatures:
    • -60 °F on deployment
    • 0 °F to 200 °F when parked
    • 70 °F average when rolling
  • Tire Pressure: 1.5 psia

Items stowed on MET

Data from Operator's Manual by General Electric[5]

Stowed Item # Items Stowed Quantity Lunar Module Stowage/Code
1 Camera/Power Pack (16 mm) 1 (on tool carrier) Ascent: A4
2 Magazine (16 mm) 3 (1 in camera) Ascent: A4
3 Camera (70 mm Hasselblad) 1 Ascent: F2B
4 Magazine (70 mm) 3 (1 in camera) Ascent: F2B
5 Handle (70 mm) 1 Ascent: F2B
6 Trigger (70 mm) 1 Ascent: F2B
7 RCU/70 mm Bracket 1 Ascent: F9A
8 Camera Assembly 1 Descent: M1R
9 Magazine Assembly 2 (1 in camera) Descent: M1F
10 Magazine Assembly Cover 1 Descent: M1F
11 RCU/LGEC Bracket 1 Descent
12 Camera (Close-up/stereo) 1 Descent:M1N
13 Weigh Bags 4 Descent: M1P
14 Trenching Tool 1 Descent: M1W
15 Special Environment Sample Container 2 Descent: M1P
16 Portable Magnetometer: *Tripod & Sensor*Cable Reel*Electronics Package 1 Descent: Adjacent Sequence Bay
17 ALHTC 1 Descent: ALSEP
18 Camera Staff 1 Descent: ALSEP
19 Hammer 1 Descent: M1K
20 Scoop 1 Descent: M1M
21 Lens/Brush 1 Descent: ALSEP
22 Tongs 1 Descent: M1H
23 Extension Handle 5 Descent: M1G
24 Core Tubes 2 Descent: 1 in SRC
25 35 Bag Dispenser 1 Descent: M1T
26 Penetrometer 1 Descent: ALSEP
27 Gnomon 1 Descent: M1A
27A Color Chart & Traverse Map 1 EA Descent: ALSEP
File:Modular-Equipment-Transporter.jpg
Line drawing of the Modular Equipment Transporter.

References

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