
Accession Number : AD0260181
Title : SIMPLE FORMULAS FOR STAGNATIONPOINT CONVECTIVE HEAT LOADS IN LUNAR RETURN
Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C
Personal Author(s) : GRANT,FREDERICK C.
Report Date : JUL 1961
Pagination or Media Count : 1
Abstract : Simple formulas are given for the stagnationpoint convective heat loads in lunar return for two operational modes. The two modes of operation analyzed are typical of moderate heating and of nearly minimum heat loads, respectively. The values of the parameters in a simple twoparameter formula for the totalheat load are given in the liftdragratio range of 0.2 to 1.0 and in the peak loading range of 2g to 10g. For vehicles having a liftdrag ratio near 0.5, which is typical of many proposed lunar return vehicles, the nominal mode had about 20 percent more absorption than the nearly minimum mode. (Author)
Descriptors : *AERODYNAMIC HEATING, *ATMOSPHERE ENTRY, *LUNAR PROBES, CONTROL SYSTEMS, DRAG, FLIGHT PATHS, LIFT, MATHEMATICAL ANALYSIS, REENTRY VEHICLES
Distribution Statement : APPROVED FOR PUBLIC RELEASE