Seat Experiments for the Full-scale Transport Aircraft Controlled Impact Demonstration PDF Download

Author: Mark R. Cannon
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 254

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Book Description
As part of the FAA/NASA Controlled Impact Demonstration (CID) with a four-engine jet transport, 22 experimental seats have been placed on the aircraft by the contractor for the FAA. Four additional experimental seats have been directly installed by NASA and the FAA. Also, an originally installed pilot seat was included in the overall series of 27 seat experiments. Of the 22 seats installed by the contractor, 13 have been modified for the intent of improving their structural crashworthiness. These include 12 triple-occupant passenger seats and one flight attendant seat. The modification process was supported by extensive testing and analysis. Initially, identical seats were subjected to both static and dynamic destructive tests. From these tests, much was learned about the failure modes of the seat structure and the loads at which they would occur. Using these data, a design effort (supported by NASTRAN finite element models of the seats) produced methods for improving the capability of the seat structure to sustain crash loads. Prototypes of the designs were fabricated and subjected to identical static and dynamic testing sequences. Where necessary, design improvements were made and retested. Modified experimental seats were then fabricated for installation on the test aircraft.