Defying pitch-up criteria on swept-back wings by active flow control

Philipp Tewes, Israel J Wygnanski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Preliminary design data sheets have established criteria defining the geometry of a swept wing that avoids pitch-up-break at low speeds. These criteria limit the aspect ratio and the sweepback of a stable wing thus reducing its efficiency during cruise and limiting its flight critical Mach number. To overcome this limitation, various devices were used with the most notable one being the swing wing (e.g. B-1 & MiG-23). Preliminary tests on a variable aspect ratio wing suggests that localized active flow control that limits the spanwise flow over the upper wing surface, acts as a fluidic fence potentially overcoming the classical design limitations.

Original languageEnglish (US)
Title of host publication57th Israel Annual Conference on Aerospace Sciences, IACAS 2017
PublisherIsrael Annual Conference on Aerospace Sciences
StatePublished - 2017
Event57th Israel Annual Conference on Aerospace Sciences, IACAS 2017 - Tel Aviv and Haifa, Israel
Duration: Mar 15 2017Mar 16 2017

Other

Other57th Israel Annual Conference on Aerospace Sciences, IACAS 2017
CountryIsrael
CityTel Aviv and Haifa
Period3/15/173/16/17

Fingerprint

Flow control
Aspect ratio
Swept wings
Fences
Fluidics
Mach number
Geometry

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Tewes, P., & Wygnanski, I. J. (2017). Defying pitch-up criteria on swept-back wings by active flow control. In 57th Israel Annual Conference on Aerospace Sciences, IACAS 2017 Israel Annual Conference on Aerospace Sciences.

Defying pitch-up criteria on swept-back wings by active flow control. / Tewes, Philipp; Wygnanski, Israel J.

57th Israel Annual Conference on Aerospace Sciences, IACAS 2017. Israel Annual Conference on Aerospace Sciences, 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tewes, P & Wygnanski, IJ 2017, Defying pitch-up criteria on swept-back wings by active flow control. in 57th Israel Annual Conference on Aerospace Sciences, IACAS 2017. Israel Annual Conference on Aerospace Sciences, 57th Israel Annual Conference on Aerospace Sciences, IACAS 2017, Tel Aviv and Haifa, Israel, 3/15/17.
Tewes P, Wygnanski IJ. Defying pitch-up criteria on swept-back wings by active flow control. In 57th Israel Annual Conference on Aerospace Sciences, IACAS 2017. Israel Annual Conference on Aerospace Sciences. 2017
Tewes, Philipp ; Wygnanski, Israel J. / Defying pitch-up criteria on swept-back wings by active flow control. 57th Israel Annual Conference on Aerospace Sciences, IACAS 2017. Israel Annual Conference on Aerospace Sciences, 2017.
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