Helicopter shaft vibration simulator

Details Helicopter shaft vibration simulator Helicopter shaft vibration simulator

1992-06-17

1994-05-10

Raevis, Robert

Measuring and testing

Vibration

Vibrator

738656, B06B 300

Patent

active

053097661

ABSTRACT:
To carry out operational checks and inspections on equipment such as gunsights (A) for fitting at the top of the shaft supporting the rotor of a helicopter, a vibration simulator is proposed, which is controlled by three linear exciters (14) having parallel axes. The exciters (14) act on an interface plate (32) carrying a shaft (50) equipped with the gunsight (A) to be tested, at three points forming an equilateral triangle centered on the axis of the shaft. The movements of the plate (32) are limited to a translation along a vertical axis and to two rotations about two orthogonal horizontal axes by an appropriate mechanism (30,26,28,42,44, 46). A digital computer, sensitive to the signals supplied by accelerometers associated with each of the exciters, controls the latter so as to reconstitute the elementary vibrations of a helicopter shaft.

REFERENCES:
patent: 2984072 (1961-05-01), Born
patent: 3340726 (1967-09-01), Armstrong et al.
patent: 4019374 (1977-04-01), Tierney et al.
patent: 4031744 (1977-06-01), Flannelly
patent: 4387881 (1983-06-01), McDuffie
patent: 4545462 (1985-10-01), Sul
patent: 4807851 (1989-02-01), De Castro
patent: 5012428 (1991-04-01), Ueno et al.
Manufacturing Technology Note, U.S. Army Material Development and Readiness Command, Office of Manufacturing Technology, Alexandria, VA, Rep. No.: AVRADCOM-TR-81-D-11, Jun. 1982 "Ground Flying Tests on a Full-Scale Helicopter."
IEEE Instrumentation and Measurement Technology Conference, Key Bridge Marriott Hotel, Washington, D.C. (Arlington, VA) Apr. 25-27, 1989, S. Ganesan: "A Mircroprossessor Based System for Vibration Testing of Air-Craft Structures."

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