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Community Noise Levels of the L-1011 TriStar Jet Transport

1972; Acoustical Society of America; Volume: 52; Issue: 1A_Supplement Linguagem: Inglês

10.1121/1.1982035

1520-9024

Nathan Shapiro,

Noise Effects and Management

In order to halt the escalation of aircraft noise in the vicinity of airports, the Federal Aviation Administration developed, and in late 1969 issued, the Noise Certification Standards of FAR Part 36. The Lockheed L-1011 TriStar, a wide-bodied trijet transport, had been planned not only to meet the anticipated FAA requirements, but to provide the quietest community environment that was technologically practicable and economically reasonable. Powered by Rolls-Royce high bypass ratio engines, with quiet operation a major design goal, and utilizing specially designed acoustical lining for its nacelles, the L-1011 has demonstrated flyover noise levels substantially lower than the FAA specified limits, and also measurably lower than those of competitive airplanes. As a result, community annoyance levels have been achieved that are 65% to 75% below those of the presently operating older jet transports.