NDLI: Targetting and guidance program documentation. [a user's manual

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Targetting and guidance program documentation. [a user's manual

Content Provider	NASA Technical Reports Server (NTRS)
Author	Harrold, E. F. Neyhard, J. F.
Copyright Year	1974
Description	A FORTRAN computer program was developed which automatically targets two and three burn rendezvous missions and performs feedback guidance using the GUIDE algorithm. The program was designed to accept a large class of orbit specifications and to automatically choose a two or three burn mission depending upon the time alignment of the vehicle and target. The orbits may be specified as any combination of circular and elliptical orbits and may be coplanar or inclined, but must be aligned coaxially with their perigees in the same direction. The program accomplishes the required targeting by repeatedly converging successively more complex missions. It solves the coplanar impulsive version of the mission, then the finite burn coplanar mission, and finally, the full plane change mission. The GUIDE algorithm is exercised in a feedback guidance mode by taking the targeted solution and moving the vehicle state step by step ahead in time, adding acceleration and navigational errors, and reconverging from the perturbed states at fixed guidance update intervals. A program overview is presented, along with a user's guide which details input, output, and the various subroutines.
File Size	2270751
Page Count	61
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19740023207
Archival Resource Key	ark:/13960/t5bc8r856
Language	English
Publisher Date	1974-07-15
Access Restriction	Open
Subject Keyword	Space Sciences Algorithms Command Guidance Subroutine Libraries Computers Target Simulators User Manuals Computer Programs Computer Programs Input/output Routines Fortran Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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