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Environmental Test Engineering and Integration
Code 549
Environmental Project
Structural Dynamics
Electromagnetic
Space Simulation
•
 Facilities
- T/V Facility 225 (9'x14')
- T/V Facility 237 (7' x 8')
- T/V Facility 238 (12' x 14')
- T/V Facility 239 (7' x 8')
- T/V Facility 240 (3' x 3')
- T/V Facility 241 (3' x 4')
- T/V Facility 245 (2' x 3')
- T/V Facility 246 (3.5' x 5.5')
- T/V Facility 281 (3' x 4')
- T/V Facility 290 (27' x 40')
- T/H Facility 204 (2.2 ft³)
- T/H Facility 232 (64 ft³)
- T/H Facility 233 (64 ft³)
•
 Personnel
 
Facility 246 is a horizontal loading thermal vacuum test chamber used to simulate lunar vacuum environments. Electrical feedthroughs and liquid and gas penetrations are provided at locations on the rear section of the chamber.
 Facility 246

Mode of Operation

Test items are loaded onto a 30" wide x 50" deep payload table that is capable of supporting 227 kg (500 lb). The table rolls out to improve payload accessibility. Access to the chamber is through a clean room that encloses the facility.


Parameters
Test Pressure: <2.0 x 10E-7 psi (10-5 torr)
Shroud Temperature:-1400°C to +150°C


Physical Characteristics

Test volume: 1.06 m dia x 1.68 m L (3.5’ x 5.5’)
Payload support: 227 kg (500 lb)
Instrumentation ports: 12 each 15.2 cm dia (6"), 2 each 20.3 cm dia (8"), 4 each 25.4cm dia (10"),
1 each 35.6cm dia (14")
Std. electrical feedthroughs: 61-pin, 37-pin, 7-pin, 4-pin, RF


Integral Instrumentation

Pressure: Convectron - atm to 10-3 Torr
Ion gauge: - 10-3 Torr to ultimate
Contamination monitors: Cold finger, scavenger plate


Auxiliary Equipment

Portable thermal systems are available to control baseplates and contamination control mirrors.

 

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Editor: J. Killam
NASA Official: D. Robinson
Last Updated: March 25, 2024
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