The Compleat TRAIDsman.
Abstract
Traid is a family of subroutines which handle the calculation of powered and guided trajectories and of Keplerian orbits. There are subroutines which integrate vehicles forward or backward in time, with thrust-mass-lift-drag-response input by the user, with either preassigned or computed guidance commands. Orbits may be elliptical (multiple revolutions are allowed) or hyperbolic; transfer between integrated flight and orbital representation is accomplished automatically. In addition to trajectory calculations, TRAID also provides assistance in the following areas: (1) card-data input, (2) printed output, with standardized formats, (3) vector- and matrix-manipulating routines, (4) problem supervision -- e.g., printing title page, enforcing time and page limits, and (5) miscellaneous aids -- e.g., plotting, manipulating tabular data. If you have a trajectory problem, TRAID can make your programming task easier in two ways. First, your program will accomplish more per FORTRAN statement. The second (hidden) benefit is that your program will probably contain fewer errors, because your attention can remain concentrated on the problem as distinct from the spelling. To use TRAID, you must write a main program in FORTRAN. In this program you must worry about two things: (1) the alloction of storage for arrays, and (2) calling the appropriate TRAID routines to perform the desired operations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1969
- Accession Number
- ADA127695
Entities
People
- Tom Plambeck