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Abstract
When a missile is launched from a canister, the impingement of the exhaust Bases on the plenum chamber creates a complex, viscous/shock interaction flow field. In order to study the rocket plume heat transfer effects on the closed and open plenum chambers, static rocket motor firings are carried out. Static tests are conducted in a small-scale rocket motor loaded with a typical nitramine propellant to produce a nozzle exit Mach number of 3. This supersonic jet is made to interact with the plenum chamber having closed and open sides. The distance between the nozzle exit and the plenum chamber back plate is varied from 6.3 to 9.6 times the nozzle exit diameter for the closed plenum chamber and 5.9 to 9.4 times the nozzle exit diameter for the open plenum chamber. In the plenum chamber, the heat flux has been measured using slug type heat flux gauges mounted at different locations. The temperature - time data are analyzed to obtain an insight into the flow field in the plenum chamber. Thirteen static tests are carried out to obtain the effect of axial distance between the nozzle exit and the plenum chamber back plate, and stagnation pressure in the rocket motor on the local heat transfer, characterized by Nusselt number in the closed and open plenum chambers.
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References
- l. Venugopal, K.M., Rajkumar, A., Vijaykant, S., Ramanujachari, V., Pant, G.C. and Ghanegaonkar, P.M., "Experimental Investigation on the Supersonic Jet Interactions in a Plenum Chamber", Defence Science Journal (in press).
- Doeblin, E.O., "Measurement Systems: Application and Design", McGraw Hill, Tokyo, 1990.
- Kidd, C.T. and Adams, J.C., "Fast Response Heat Flux Sensor for Measurement Commonality in Hypersonic Wind Tunnels", Journal of Spacecraft and Rockers, vol.38, 2001, pp.719 - 729.
- Lee, C., Chung, M.K., Lim, K.B. and Kang, Y.S., "Measurement of Heat Transfer from a Supersonic Impinging Jet on to an Inclined Flat Plate at 45"", Journal of Heat Transfer, Vol.ll3, 1991 , pp.769112.
- Kuo, C.H. and Kulkarni, A.R., "Analysis of Heat Flux Measurement by Circular Foil Gages in a Mixed Convection/Radiation Environment", Journal of Heat Transf'er, Vol.l 13,1991, pp.l037-1040.
- Ozisik, M.N., "Heat Conduction", John Wiley and Sons. New York. 1980.
- Kim, K.H. and Chang, K.S., "Three Dimensional Structure of a Supersonic Jet Impinging on an Inclined Plate", Journal of Spacecraft and Rockets, Vol.3l , 1994, pp.736-744.
- Lamont, P.J. and Hunt, B.L., "The Impingement of Under Expanded Axisymmetric Jets in Perpendicular and Inclined Flat Plates", Journal of Fluid Mechanics, Vol. I 00, 1 980, pp. 471 -511 .
- Goldstein, R.J. and Franchett, M.E,., "Heat Transfer from a Flat Surface to an Oblique Impinging Jet", Journal of Heat Transfer, Vol. I 1 0, I 988, pp. 84-90.
References
l. Venugopal, K.M., Rajkumar, A., Vijaykant, S., Ramanujachari, V., Pant, G.C. and Ghanegaonkar, P.M., "Experimental Investigation on the Supersonic Jet Interactions in a Plenum Chamber", Defence Science Journal (in press).
Doeblin, E.O., "Measurement Systems: Application and Design", McGraw Hill, Tokyo, 1990.
Kidd, C.T. and Adams, J.C., "Fast Response Heat Flux Sensor for Measurement Commonality in Hypersonic Wind Tunnels", Journal of Spacecraft and Rockers, vol.38, 2001, pp.719 - 729.
Lee, C., Chung, M.K., Lim, K.B. and Kang, Y.S., "Measurement of Heat Transfer from a Supersonic Impinging Jet on to an Inclined Flat Plate at 45"", Journal of Heat Transfer, Vol.ll3, 1991 , pp.769112.
Kuo, C.H. and Kulkarni, A.R., "Analysis of Heat Flux Measurement by Circular Foil Gages in a Mixed Convection/Radiation Environment", Journal of Heat Transf'er, Vol.l 13,1991, pp.l037-1040.
Ozisik, M.N., "Heat Conduction", John Wiley and Sons. New York. 1980.
Kim, K.H. and Chang, K.S., "Three Dimensional Structure of a Supersonic Jet Impinging on an Inclined Plate", Journal of Spacecraft and Rockets, Vol.3l , 1994, pp.736-744.
Lamont, P.J. and Hunt, B.L., "The Impingement of Under Expanded Axisymmetric Jets in Perpendicular and Inclined Flat Plates", Journal of Fluid Mechanics, Vol. I 00, 1 980, pp. 471 -511 .
Goldstein, R.J. and Franchett, M.E,., "Heat Transfer from a Flat Surface to an Oblique Impinging Jet", Journal of Heat Transfer, Vol. I 1 0, I 988, pp. 84-90.