
Accession Number : ADA187706
Title : CounterBalanced Pendulum.
Descriptive Note : Final rept. Dec 85Jan 86,
Corporate Author : AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHTPATTERSON AFB OH
Personal Author(s) : Lee, Jon
PDF Url : ADA187706
Report Date : May 1986
Pagination or Media Count : 6
Abstract : To simulate zerogravity in groundtesting, one may analyze a system of counterbalanced pendulums made up of two identical bobs which are tied to the ends of an inextensible string and are suspended from two pulleys separated by a certain distance. With this diskette you will explore the dynamics of counterbalanced pendulums when only one bob is swung, while the other is allowed to move vertically. There are two basic modules. One is the insitu integration by the fourthorder RungeKutta scheme with a tolerance check. Although there is a restriction on the choice of initial angles, you may integrate the motion as long as you please. The other module is a theoretical analysis for small and large times to deduce qualitative dynamical behavior. We have discovered an asymptotic invariant of motion which is defined analogous to the action of standard pendulum. Keywords: Counter balanced pendulum, Zero gravity simulation, Time integration, Microcomputer.
Descriptors : *WEIGHTLESSNESS, *EQUATIONS OF MOTION, *PROGRAMMING MANUALS, DYNAMICS, HOISTS, INTEGRATION, MICROCOMPUTERS, PENDULUMS, SIMULATION, THEORY, TIME, COMPUTER PROGRAMMING, BALANCE
Subject Categories : Computer Programming and Software
Distribution Statement : APPROVED FOR PUBLIC RELEASE