Jet simulation studies in the 1.2m wind tunnel (of effects of stage separation)

Lokhandwala, OA and Mathur, NB and Mohan, J (1980) Jet simulation studies in the 1.2m wind tunnel (of effects of stage separation). Aeronautical Society of India, Journal, 32 . pp. 137-142.

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Abstract

Jet simulation carried out in a 1.2 m trisonic wind tunnel is reported, and a method adopted to simulate hot jet (variation in the ratio of specific heat) using cold jet is presented. Surface pressure measurements obtained on the upper stage, and some of the observed Schlieren flow pattern for different separation distances at zero degree incidence are discussed. There is no significant effect of jettisoned stage on parent stage beyond X/D = 0.8, where X is the separation distance between two stages and D is the diameter of the jettison stage. For X/D not greater than 0.4, nozzle flow is subsonic and the flow is oscillating in nature. Schlieren pictures qualitatively support pressure distribution data

Item Type: Journal Article
Uncontrolled Keywords: Jet flow; Nozzle flow; Pressure distribution; Stage separation;Transonic wind tunnels; Wind tunnel tests; Aerospace vehicles; Flow distribution; Flow stability; Schlieren photography; Subsonic flow; Test facilities
Subjects: ASTRONAUTICS > Spacecraft Propulsion & Power
Division/Department: Experimental Aerodynamics Division, Experimental Aerodynamics Division, Experimental Aerodynamics Division
Depositing User: Ms. Alphones Mary
Date Deposited: 13 Dec 2005
Last Modified: 24 May 2010 09:39
URI: http://nal-ir.nal.res.in/id/eprint/904

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