
Proceedings Paper
Semi active tunable mass damper for helicoptersFormat | Member Price | Non-Member Price |
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Paper Abstract
Helicopters are among the most complex machines ever made. While ensuring high performance from the aeronautical
point of view, they are not very comfortable due to vibration mainly created by the main rotor. Traditionally this problem
is solved by mounting several TMD inside the helicopter, each tuned to the frequency of the disturbance the main
associated with the main rotor. In particular, this frequency is equal to the angular speed of the main rotor times the
number of blades. Despite the angular speed of the main rotor is kept fixed and constant during the flight, it happens that
some changes may be needed in particular situations.
Therefore it happens that the mass dampers are no more tuned and thus ineffective. This leads to a significant increase of
the amplitude of vibration. This work proposes to replace the purely passive systems with semi-active systems that are
able to change their own natural frequency in order to be effective at each angular speed of the main rotor.
The paper deals with the preliminary analysis of the project to numerically and experimentally evaluate the feasibility of
this solution.
Paper Details
Date Published: 11 April 2017
PDF: 7 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 1016431 (11 April 2017); doi: 10.1117/12.2259987
Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)
PDF: 7 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 1016431 (11 April 2017); doi: 10.1117/12.2259987
Show Author Affiliations
Ferruccio Resta, Politecnico di Milano (Italy)
Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)
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