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原文传递 Vertical Impact Response Characteristics of Four Commuter/Regional Airplanes. Final rept.

题名：	Vertical Impact Response Characteristics of Four Commuter/Regional Airplanes. Final rept.
作者：	Abramowitz-A.; Vu-T.
关键词：	Crash-testing; Vertical-impact; Drop-tests; Airplanes-.;Beechcraft-aircraft; Fuselages-; Fuel-tanks; Dynamic-testing; Commuter-aircraft.
摘要：	The Federal Aviation Administration (FAA) proposed seat dynamic performance standards for Title 14 of the Code of Federal Regulations (CFR) Part 23 commuter category airplanes. Current 14 CFR Parts 23 and 25 seat dynamic performance standards were established empirically using the results of prior airplane crash impact test programs. In the development of these standards, it was noted that the full-scale airplane impact test database did not include airplanes representative in size of commuter/regional airplanes. To provide data for these size airplanes, the FAA conducted four full-scale vertical impact tests of commuter/regional airplanes. The tests were conducted at the FAA William J. Hughes Technical Center, Atlantic City International Airport, New Jersey. The structural response of the airframes, seats, and anthropomorphic test dummies was measured for each test. The airplanes tested were a 19-passenger Fairchild Metro III, a 19-passenger Beechcraft 1900C, a 30-passenger Short Brothers 3-30, and a 42-passenger ATR 42-300. The results showed that flat-belly fuselages developed higher accelerations with shorter pulse durations than curved-belly fuselages, and the dynamic crush during the test was consistent with the results of an idealized triangular impact. The ATR 42 wing and the Shorts 3-30 overhead fuel tanks penetrated the occupied volume of the cabin after their support structures failed. The overall data showed two groups of fuselage responses: Group 1 with higher accelerations and shorter pulse durations and Group 2 with lower acceleration and longer pulse duration. Group 1 had an average crush depth of 10 inches and Group 2, 18 inches. Only one of the four fuselages was able to effectively use its underfloor crush depth to reduce fuselage acceleration.
报告类型：	科技报告