Helicopter Flight and Laboratory Vibration Tests for Flight Demonstration Model of Airspring Vibration Isolator.

摘要

It has been reported that the vibrations induced by the rotor of the helicopter affect the performance of the missile guidance system. As an approach to alleviate the problem, an isolation system designated as Airspring Vibration Isolator (AVI) was developed to isolate the rotor-induced vibration from transmitting to the launcher-missile system. A ground demonstration model of the AVI was designed and manufactured at MIRADCOM. Chrysler designed and manufactured a flight demonstration model of the AVI. The laboratory vibration tests of the AVI flight demonstration model include a vertical vibration test, transverse vibration test and longitudinal vibration test with base excitations along the three principal axes, respectively. Each vibration test in turn includes a sweep-sine test, random test and shock test. The helicopter flight test of the AVI was performed on 4 January 1978. The flight profile included take-off, hovering, 30 and 60 knot level flights, and landing. The isolation performance of the AVI during the helicopter flight was found to be good in general.