Accession Number : AD0780619

Title :   Equations Derived for Computer Programming of Helium Inflations for Large Plastic Balloons.

Descriptive Note : Instrumentation papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Gildenberg,Bernard D.

Report Date : 22 APR 1974

Pagination or Media Count : 18

Abstract : Helium inflation computations for large plastic research balloons are normally accomplished by a tedious mathematical procedure involving the use of tables which indicate available lift per tube at specified gas trailer pressures and temperatures. The tables evolved from MIT empirical data, and now have been approximated to within 0.1 lb of lift by a set of equations specifically developed for use in computer programs. The history of the tables, the advantages of converting from manual to computer processing of inflation computations, and resultant accuracies are covered in the report. (Author)

Descriptors :   *Balloons, *Inflating, *Computations, *Helium, Computer programming, Tables(Data)

Subject Categories : Lighter-than-air Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE