Aeropropulsion Environmental Test Facility,

1998 ◽  
Author(s):  
John K. Lominac ◽  
Joseph F. Boytos
Keyword(s):  
Test Facility ◽  
Environmental Test

Design concepts for a combined space environmental test facility

Vacuum ◽  
1967 ◽  
Vol 17 (3) ◽  
pp. 168-169 ◽  
Author(s):  
C.P. Boebel ◽  
S.J. Babjak
Keyword(s):  
Test Facility ◽  
Design Concepts ◽  
Environmental Test

Control of low frequency noise from an environmental test facility

2021 ◽  
Vol 263 (3) ◽  
pp. 3488-3497
Author(s):  
Malcolm Smith ◽  
Erika Quaranta
Keyword(s):  
Low Frequency ◽  
Building Design ◽  
Test Facility ◽  
Successful Outcome ◽  
High Mountain ◽  
Frequency Noise ◽  
Mountain Range ◽  
Far Field ◽  
Low Frequency Noise ◽  
Environmental Test

Environmental test chambers are used in the automotive industry to verify the resilience of vehicles. In just a few hours it is possible to take a car from mid-winter in the artic, via a high mountain range, to mid-summer in a desert. Powerful ventilation systems are used to change the temperature, pressure and humidity of the air in the chamber, and the variable speed blowers are a major source of low frequency noise, which can cause significant disturbance at neighbouring properties if there are gaps in silencer performance. This paper details a study to assess the attenuation requirements for a system to meet a standard criterion for low frequency far-field noise levels, and to select a reactive silencer system to achieve that specification under all circumstances. The system used standard silencer components where possible, but needed to take account of long pipe runs through the facility, with tailpipe resonances being a particular issue, and was further constrained by space and loading limits for the building. Design layouts were verified using the Actran FE code, taking account of interactions with existing silencers and transfer functions to the far-field, in order to have very high confidence of a successful outcome.

Unique Test Capabilities of the Eglin AFB McKinley Climatic Laboratory

1987 ◽  
Vol 30 (6) ◽  
pp. 27-29
Author(s):  
Lorin Klein
Keyword(s):  
Test Chamber ◽  
Test Facility ◽  
Jet Engines ◽  
Main Chamber ◽  
The World ◽  
Environmental Test

The 92,900m3 (3.28 million ft3) Main Chamber of the Climatic Laboratory (Figure 1) is the largest and most complex climatic environmental test chamber in the world. It employs an air makeup system to cool or heat air to the test temperatures and ingest this air into the chamber to allow the operation of jet engines during climatic tests. Other test chambers discussed are the 2,750 m3 (97,000 ft3) Engine and Equipment Test Facility and the 2,125 m3 (75,000 ft3) Sun, Wind, Rain, and Dust Facility.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY'S TEST FACILITY OHMSETT: THE FIRST SIX MONTHS

1975 ◽  
Vol 1975 (1) ◽  
pp. 343-345 ◽  
Author(s):  
John S. Farlow ◽  
Frank J. Freestone
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Video Recording ◽  
Water Clarity ◽  
Test Facility ◽  
Regular Waves ◽  
Protection Agency ◽  
Public And Private ◽  
Environmental Test ◽  
End Wall

ABSTRACT The U.S. Environmental Protection Agency completed the basic construction of its Oil and Hazardous Materials Simulated Environmental Test Tank (OHMSETT) in the summer of 1974. Spill cleanup methods and equipment will be safely evaluated and improved at this facility without endangering the environment. The Leonardo, New Jersey, facility is designed to simulate conditions in rivers and estuaries. The core of the facility is a 667-ft long by 65-ft wide concrete, above-ground, outdoor tank, 11 ft deep. It is filled to a depth of 8 ft with estuarine water. Regular waves up to 30 in high and 100 ft long can be generated, or a severe interference chop condition can be made by reflecting regular waves off an angled end wall. The tank is spanned by a 40-ton bridge designed for towing floating test equipment at speeds up to 6 knots. The bridge also contains apparatus for laying thin oil slicks onto the water surface immediately ahead of equipment being tested. A 2,000-gpm, pressure-leaf, diatomaceous earth filter maintains sufficient water clarity to permit the use of underwater video recording and photography. A 7,000-square-foot support building houses offices, a laboratory, mechanical and electronic shops, and an equipment preparation area. A description of experiences during the first 6 months of operation and a discussion of the facility's potential for serving public and private users will be presented.

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