Passive Control of Transonic Unsteady Pressure Fluctuations Using Aerodisc

Singh, D and Yanamashetti, G and Suryanarayana, G and Jagadeesh, G (2023) Passive Control of Transonic Unsteady Pressure Fluctuations Using Aerodisc. In: 48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021, 27- 29 December 2021, Pilani, pp. 493-496.

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Abstract

Shock wave and boundary layer interactions (SWBLI) are known to generate very high levels of unsteady pressure fluctuations which can trigger transonic buffet over the payload region of a launch vehicle. Experiments were carried out on a typical launch vehicle model in the NAL 0.6m trisonic wind tunnel to measure the pressure fluctuations over the payload region. It was found that a passive Aerodisc protruding upstream of the nose of the vehicle very significantly alleviates the pressure fluctuations, especially in the low-frequency band, which is crucial for launch vehicles. The effectiveness of the Aerodisc in the alleviation of SWBLI is demonstrated in this paper through analyses of unsteady pressure data.

Item Type:	Conference Paper
Publication:	Lecture Notes in Mechanical Engineering
Publisher:	Springer Science and Business Media Deutschland GmbH
Additional Information:	The copyright for this article belongs to the Springer Science and Business Media Deutschland GmbH.
Keywords:	Passive flow control; SWBLI; Transonic buffet; Unsteady pressure fluctuations
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	14 Jul 2023 06:17
Last Modified:	08 Aug 2023 10:47
URI:	https://eprints.iisc.ac.in/id/eprint/82398

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