The Ram Air Facility supplies regulated air pressure to the jet engine inlets of two separate test stands at Pratt & Whitney's Engine Test Facility. Using two independent industrial compressors driven by gas generators, the compressed air is routed down two 3-foot diameter pipes where the temperature is then regulated via instrumentation-controlled valves by a large cooling tower that supplies water to two large heat exchangers. The output of the two heat exchangers is then diverted upward to an elevation of 60-feet where it is mixed and sent down a 6-foot diameter pipe to each of the two test stands. The output from this overhead pipe is diverted downward and then horizontal where it enters a plenum chamber in order to regulate the flow of the air as the ducting is adapted to meet the inlet of the jet engine. The compressors, generators, cooling tower, heat exchanger platform and pipe tower supports all required new foundations and support structures. A trailer was designed to support the plenum chamber and allow for rough adjustment of its location relative to the jet engine inlets. The entire engine inlet system had to be reconfigured and adapted to mate with the plenum and its supports had to provide fine adjustment to align with the jet engine.
EDF was responsible for the design and construction oversight of the inlets, ducting, ducting mounts, plenum, gimble joints, water-cooling tower, and other various features.