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The control of vibration in helicopters

Published online by Cambridge University Press:  04 July 2016

D. E. H. Balmford
D. E. H. Balmford*
Affiliation:
Westland Helicopters Limited
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Extract

The problems involving vibration which affect helicopters can be divided into two major categories:

  • (a)Forced vibration effects

  • (b)Aeroelastic and aeromechanical instabilities.

Forced vibration effects are subdivided into two categories.

  • (i)Effects due primarily to aerodynamic forcing; and

  • (ii)Effects due primarily to mechanical forcing.

Forced vibration effects have important repercussions in the area of:

  • (i)Crew comfort and efficiency

  • (ii)Fatigue strength of dynamic components and the airframe

  • (iii)Reliability of electronic equipment.

The most important forcing effect is aerodynamic in origin, and this will be considered first.

Type
Research Article
Information
The Aeronautical Journal , Volume 81 , Issue 794 , February 1977 , pp. 63 - 67
Copyright
Copyright © Royal Aeronautical Society 1977 

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