Download eBook for Free

FormatFile SizeNotes
PDF file 9.7 MB

Use Adobe Acrobat Reader version 10 or higher for the best experience.


Purchase Print Copy

 FormatList Price Price
Add to Cart Paperback70 pages $25.00 $20.00 20% Web Discount

A study of the aerodynamic flight regions that may be encountered during entry into the atmosphere of Venus, and an estimate of the gross aerodynamic behavior of objects entering that atmosphere. It is found that the best evidence available does not permit an estimate of a single likely model atmosphere suitable for aerodynamic use. Substantial differences in flight regions, particularly in the troposphere, must be considered. Depending on the models used, the continuum flight region is entered at altitudes between about 150 and 80 km above the visible cloud layer. In view of this uncertainty in the structure of the Venus atmosphere, a more detailed analysis of flow problems in shock layers, boundary layers, etc., would be premature. The flight regime limits given, however, may provide design criteria for probes approaching the planet or possibly those reaching the cloud layer itself.

Research conducted by

This report is part of the RAND Corporation Research memorandum series. The Research Memorandum was a product of the RAND Corporation from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.

Permission is given to duplicate this electronic document for personal use only, as long as it is unaltered and complete. Copies may not be duplicated for commercial purposes. Unauthorized posting of RAND PDFs to a non-RAND Web site is prohibited. RAND PDFs are protected under copyright law. For information on reprint and linking permissions, please visit the RAND Permissions page.

The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.