ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Effect of gas injection on drag and surface heat transfer rates for a 30 degrees semi-apex angle blunt body flying at Mach 5.75

Sahoo, N and Reddy, KPJ and Jagadeesh, G and Kulkarni, V (2005) Effect of gas injection on drag and surface heat transfer rates for a 30 degrees semi-apex angle blunt body flying at Mach 5.75. In: Shock Waves (2). pp. 239-244.

[img] PDF
Effect_of_gas_injection.pdf - Published Version
Restricted to Registered users only

Download (929kB) | Request a copy
Official URL: http://www.springerlink.com/content/g436010u228838...

Abstract

Effect of coolant gas injection in the stagnation region on the surface heat transfer rates and aerodynamic drag for a large angle blunt body flying at hypersonic Mach number is reported for two stagnation enthalpies. A 60° apex-angle blunt cone model is employed for this purpose with air injection at the nose through a hole of 2mm diameter. The convective surface heating rates and aerodynamic drag are measured simultaneously using surface mounted platinum thin film sensors and internally mounted accelerometer balance system, respectively. About 35–40% reduction in surface heating rates is observed in the vicinity of stagnation region whereas 15–25% reduction in surface heating rates is felt beyond the stagnation region at stagnation enthalpy of 1.6MJ/kg. The aerodynamic drag expressed in terms of drag coefficient is found to increase by 20% due to the air injection.

Item Type: Journal Article
Publication: Shock Waves
Publisher: Springer
Additional Information: Copyright of this article belongs to Springer.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 08 Mar 2012 07:34
Last Modified: 16 Oct 2018 08:45
URI: http://eprints.iisc.ac.in/id/eprint/43740

Actions (login required)

View Item View Item