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Steady and unsteady pressure measurements on a swept-wing aircraft
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics.
2014 (English)In: Aeronautical Journal, ISSN 0001-9240, Vol. 118, no 1200, 109-122 p.Article in journal (Refereed) Published
Abstract [en]

Steady and unsteady pressure measurements are conducted for a tailless aircraft model. The main aim with the presented experimental work is to investigate the difficulties and possibilities involved in using an available pressure sensing system for accurate unsteady pressure measurement. The experimental procedure which is utilised for unsteady pressure measurements is described in detail. In particular, the importance of synchronised timing is recognised. For a harmonically varying pressure a small time delay in the measurement chain can result in a significant phase shift. Also, difficulties and uncertainties that are still present are pointed out. The results from these experiments are compared to numerical results based on unsteady potential flow theory. In general, the experimental and computational results show similar trends. Especially good agreement is found for the steady pressure measurements. For the unsteady pressure measurements a possible Reynolds number dependency is found for the considered test conditions.

Place, publisher, year, edition, pages
2014. Vol. 118, no 1200, 109-122 p.
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-144128ISI: 000332748500001Scopus ID: 2-s2.0-84894262421OAI: oai:DiVA.org:kth-144128DiVA: diva2:712135
Note

QC 20140414

Available from: 2014-04-14 Created: 2014-04-10 Last updated: 2017-12-05Bibliographically approved

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