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The effect of twist on flexible hydrofoils Milne, John Gordon
Abstract
Flexible low aspect ratio hydrofoils were tested to investigate the effect of twist on the lift and drag characteristics and in particular, the high induced drag force. Flexible models with stiffeners at various positions and rigid models with a set twist were tested in a water flume and the lift and drag forces were measured over a range of angles of attack. It was confirmed that twisting can be used as an alternative to tapering to produce elliptic loading. Twisting of tapered wings was shown to be beneficial in the cases tested and the benefits are in contradiction to the simple theory of elliptic loading. It was found that twisting is more beneficial than the simple theory shows and that the twisted wing is less sensitive to changes in angle of attack.
Item Metadata
Title |
The effect of twist on flexible hydrofoils
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1974
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Description |
Flexible low aspect ratio hydrofoils were tested to investigate the effect of twist on the lift and drag characteristics and in particular, the high induced drag force. Flexible models with stiffeners at various positions and rigid models with a set twist were tested in a water flume and the lift and drag forces were measured over a range of angles of attack.
It was confirmed that twisting can be used as an alternative
to tapering to produce elliptic loading. Twisting of tapered wings was shown to be beneficial in the cases tested and the benefits are in contradiction to the simple theory of elliptic loading. It was found that twisting is more beneficial than the simple theory shows and that the twisted wing is less sensitive to changes in angle of attack.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-01-21
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0050517
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.