A Closed-Form Solution to Lifting Reentry

Item

Title
A Closed-Form Solution to Lifting Reentry
Date
1966
Index Abstract
Coming Soon
Photo Quality
Not Needed
Report Number
AFFDL TR 65-65
Creator
Bell, Roland N.
Corporate Author
Air Force Flight Dynamics Laboratory
Laboratory
Air Force Flight Dynamics Laboratory
Extent
73
Identifier
AD0631590
Access Rights
Notice(s)
Distribution Classification
1
Contract
Laboratory Research - No Contract
DoD Project
1366
DoD Task
136602
DTIC Record Exists
No
Distribution Change Authority Correspondence
None
Special Scanning Requirements
fold out pages
Abstract
This report derives closed-form expressions for predicting the longitudinal and lateral range attainable by lifting reentry vehicles. The resultant equations sensitively and accurately define the influence of L/D ratio, bank angle and entry velocity variations over a spectrum of values. To illustrate the usefulness of the method, the derived expressions were used to conduct a parametric reentry study covering a range of L/D ratios from 0.5 to 4.0, bank angles from 0 to 75 degrees and entry velocities from 0.89V sub c to 0.99V sub c. The results of this study are compared with those obtained from a high speed computer study using the same range of reentry conditions. As an aid to future investigators, a series of curves is presented giving longitudinal and lateral range values for various selected L/D, bank angle and entry velocity values. For those wishing to investigate reentry under conditions not covered by these curves, a detailed 'recipe' for utilizing the method is included in an appendix. A comparison of the results of this method with those of more rigorous methods for the same reentry conditions shows that the closed-form solution has sufficient accuracy and sensitivity to be of considerable value to those persons requiring a rapid, preliminary estimate of vehicle performance.
Report Availability
Full text available
Date Issued
1966-01
Provenance
Lockheed Martin Missiles & Fire Control
Type
report
Format
1 online resource
Media
AFFDLTR65-065.pdf