dc.contributor.author |
J. A. Lawford |
en_US |
dc.contributor.author |
A. R. Beauchamp |
en_US |
dc.date.accessioned |
2014-10-21T15:49:51Z |
|
dc.date.available |
2014-10-21T15:49:51Z |
|
dc.date.issued |
1966 |
en_US |
dc.identifier.other |
ARC/R&M-3551 |
en_US |
dc.identifier.uri |
https://reports.aerade.cranfield.ac.uk/handle/1826.2/2821 |
|
dc.description.abstract |
Root-mean-square intensities and spectra of local pressure fluctuations were measured by transducers at two positions on the inner part of the wing and four on the outer part, while low-frequency pressure fluctuations on the upper surface were obtained at a further fifteen positions on the outboard part of the wing by a 'creeper' and transducer. The low-frequency component of pressure and load fluctuations increases in intensity with increasing incidence; on the inboard wing this increase is fairly abrupt and is associated with a change in the form of the mean flow field about the wing; on the outer wing the intensity increases more gradually with incidence. Buffet boundaries have been assessed tentatively from the incidence associated with rapid rise of load fluctuation on the inner wing; more severe limitations could however be imposed by conditions on the outer wing, where likely buffeting excitation is more difficult to assess. Leading-edge strakes may modify the buffet boundaries, giving a gain of about 0.2 in usable CL trimmed. There is some evidence that leading-edge droop would considerably reduce load fluctuations. |
en_US |
dc.relation.ispartofseries |
Aeronautical Research Council Reports & Memoranda |
en_US |
dc.title |
Low-speed wind-tunnel measurements of pressure fluctuations on the wing of a twin-jet aircraft (Bristol 188) |
en_US |