The tail boom strake
The tail boom strake
A helicopter tail rotor is required to provide yaw control and essentially that alone. However, it is expected to achieve that role when placed in an aerodynamically difficult location on the aircraft and to operate in a severe aerodynamic environment. This paper describes the pedal travel behaviour caused by aerodynamic interaction between the main rotor wake, the sideways velocity and subsequent forces generated by the tail boom noticed in Sea King helicopters, operating in extreme conditions during the Falklands war. Using earlier research which showed the effectiveness of a modification – a strake – to interrupt the air flow over the tail boom, conducts tests to examine the flow, the effects of the modification, and the side suction force. It also finds that the strake provides a simple and cost-effective solution to the problem.
flight dynamics, helicopters
143-159
Adams, Mark
9bf98e16-344e-4b3d-9423-42c272822e68
Newman, Simon
802c97ed-ea28-477f-8b1e-8e4f873c4281
2004
Adams, Mark
9bf98e16-344e-4b3d-9423-42c272822e68
Newman, Simon
802c97ed-ea28-477f-8b1e-8e4f873c4281
Adams, Mark and Newman, Simon
(2004)
The tail boom strake.
Aircraft Engineering and Aerospace Technology, 76 (2), .
(doi:10.1108/00022660410526015).
Abstract
A helicopter tail rotor is required to provide yaw control and essentially that alone. However, it is expected to achieve that role when placed in an aerodynamically difficult location on the aircraft and to operate in a severe aerodynamic environment. This paper describes the pedal travel behaviour caused by aerodynamic interaction between the main rotor wake, the sideways velocity and subsequent forces generated by the tail boom noticed in Sea King helicopters, operating in extreme conditions during the Falklands war. Using earlier research which showed the effectiveness of a modification – a strake – to interrupt the air flow over the tail boom, conducts tests to examine the flow, the effects of the modification, and the side suction force. It also finds that the strake provides a simple and cost-effective solution to the problem.
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Published date: 2004
Keywords:
flight dynamics, helicopters
Identifiers
Local EPrints ID: 22730
URI: http://eprints.soton.ac.uk/id/eprint/22730
PURE UUID: 556b9989-9e5e-4efb-9975-1874b139bc65
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Date deposited: 20 Mar 2006
Last modified: 15 Mar 2024 06:40
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Author:
Mark Adams
Author:
Simon Newman
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