The UH-1N helicopter was manufactured by the Bell Helicopter Company, Fort Worth, Texas. It had a single two-bladed lifting rotor and a tractor-type tail rotor instead of the more conventional pusher-type tail rotor. The UH-1N utilized the basic UH-1D fuselage, but was powered by an engine with twin power sections in contrast to the single power section engine employed by the UH-1D. At the time the salt spray program began, the test aircraft had accumulated 303 airframe hours. The test aircraft was powered by a United Aircraft of Canada T400-CP-400 engine rated at 1,800 shaft horsepower (SHP). The engine consisted of two independent power sections driving into a combining gearbox. The combining gearbox contained an overrunning clutch and a torquemeter for each power section. The left engine, S/N 66007, had accumulated 304 hours prior to this test program. The right engine, S/N 66199, had accumulated 128 hours and the combining gearbox, S/N 4016, 301 hours.


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    Salt ingestion test of the AGT 1500 recuperated automotive gas turbine

    Bodman, T.M. / Priore, T.P. | Tema Archive | 1988



    UH-1N Category II Test Program Summary

    J. R. Somsel | NTIS | 1972



    The Salt Spray Test - Past, Present and Future

    Doppke,T.S. / Bryant,A.W. / GM Truck and Bus Engineering,US et al. | Automotive engineering | 1983