An Analytical Study of the Scramjet Exhaust Expansion System. Part II.
Abstract
The present program is designed to study the losses in a scramjet exhaust expansion nozzle and to develop methods of designing the exhaust expansion system to maximize the thrust or minimize the sum of the losses. The overall program includes a literature survey, the development of a computer program to design optimized axisymmetric and plug nozzles accounting for boundary layer effects, the development of a computer program to calculate the flow field in an axisymmetric nozzle with nonequilibrium chemical reactions, the development of a design method for non-equilibrium reacting flows including boundary layer effects, the development of a computer program to analyze the flow in a three-dimensional nozzle, and the development of a computer program to design optimized three-dimensional nozzles. The design problems are formulated using variational calculus to obtain the maximum thrust; the problem constraints are imposed by using Lagrange multipliers. The results of the second year's effort are summarized. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1968
- Accession Number
- AD0848964
Entities
People
- H. Doyle Thompson
- Joe D. Hoffman
Organizations
- Purdue University