Accession Number:

AD0272318

Title:

AIR VEHICLE FLIGHT PATH OPTIMIZATION. DETAILS OF COMPUTER PROGRAM. VOLUME II

Descriptive Note:

Corporate Author:

GRUMMAN AIRCRAFT ENGINEERING CORP BETHPAGE N Y

Personal Author(s):

Report Date:

1962-02-01

Pagination or Media Count:

1.0

Abstract:

IN THE COURSE OF DEVELOPMENT OF A DIGITAL COMPUTATION TECHNIQUE FOR CALCULATIONS OF MINIMUM FUEL, MAXIMUM R NGE, AND MINIMUM TIME AIR VEHICLE FLIGHT PATHS, TWO COMPUTER PROGRAMS EMERGED. In both programs two control variables, vehicle attitude and throttle are utilized to s ape the successive approximations to the optimal path. This first program employs a penalty function procedure to move in the direction of steepest descent of a modified performance quantity to be minimized. The second employs alternating cycles of this penalty technique and projection in the negative direction of gradient of the performance quantity. An analysis of computer time and storage requirements for both double control programs led to a recommendation that a 32K core EDPM be employed. The double control variable programs are written in FORTRAN language for operation on the 32K type machine. A double control variable version of the penalty function scheme is described in FORTRAN for operation with 8K core type computers. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE