Effects of External Source Radiation on the Stagnation Flow and Heating of a Hypersonic Missile,
Abstract
In this investigation, the effects of external source radiation on the viscous hypersonic shock layer are analyzed. The problem corresponds to the condition that could be encountered by a hypersonic missile in flight near a nuclear blast. The conservation equations are solved for a viscous, hypersonic, radiating stagnation region flow by a similarity method. The radiative heat flux is obtained for the plane parallel slab approximation considering emission and absorption of radiation in the shock layer. A two-step model approximation to the spectral absorption coefficient of air is developed from detailed spectral data and used in this investigation. Real gas thermodynamic and transport properties are utilized in the form of correlation equations. Numerical solutions are presented for free stream conditions of 0.1 atm pressure, 1000K temperature, 1000 Btu/sq ft-sec external radiative flux, and flight velocities of 10,000, 20,000, and 30,000 ft/sec for nose radii between 0.1 and 1.0 foot. The body temperature is held constant at 2000K. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 29, 1969
- Accession Number
- AD0854739
Entities
People
- Julius Q. Lilly
Organizations
- United States Army Aviation and Missile Command