Instationäres Betriebsverhalten von Gasturbinen und Flugantrieben

Rick, Hans

doi:10.1007/978-3-540-79446-2_9

Cited by 1 publication

(1 citation statement)

References 33 publications

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“…A relevant mean cruise altitude of 14 km is represented through the Gulfstream G650ER business aircraft (Gulfstream, 2019). A Mach number of Ma 2 = 0.5 at the fan face and a pressure recovery of π inl = 0.99 have been stipulated (Farokhi, 2014; Rick, 2013; Seddon and Goldsmith, 1999). Additionally, an adiabatic friction-free shock has been assumed for the supersonic cases (Bräunling, 2015).…”

Section: Approachmentioning

confidence: 99%

Identification of efficient geometries for variable pitot inlets for supersonic transport

Kazula

Wöllner

Höschler

2020

AEAT

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Purpose This paper aims to reveal the influence of selected geometric parameters on the aerodynamic performance of circular variable aero engine inlets in transonic and supersonic civil aviation. Design/methodology/approach The trade-off in inlet design and aerodynamic evaluation parameters is presented. The approach to investigate the dependencies between the aerodynamic and geometric parameters at different flight conditions by means of a parametric design study is introduced. Findings The dependencies of inlet drag and efficiency from geometric parameters at flight speeds of Mach 0.95 up to Mach 1.6 are identified. Although entailing additional weight, the inlet length represents the parameter with the highest potential for drag reduction by up to 50% in the selected design space. Ideal geometries for variable pitot inlets are determined. After considering weight, their potential range benefit nearly disappears for subsonic applications, but remains above 20% for supersonic flight at Mach 1.6. Originality/value Hence, the technology of circular variable pitot inlets for supersonic transport aircraft could be a way to achieve the ambitious ecological, safety and economic goals for future civil aviation.

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Section: Approachmentioning

confidence: 99%