Accession Number : AD0875855

Title :   Analysis of the MISTIC System Autopilots,

Corporate Author : ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL GUI DANCE AND CONTROL DIRECTORATE

Personal Author(s) : Alongi, Robert E. ; Rezmer, Matthew D.

Report Date : 06 APR 1970

Pagination or Media Count : 35

Abstract : The purpose of this study was to determine by analytical means the gains and compensation networks required for three types of autopilots for the Missile System Target Illuminator Controlled (MISTIC) studies. These autopilots consist of a pitch attitude, a pitch rate, and a roll attitude. The pitch attitude autopilot is used in the indirect fire mode to pitch the missile over to a required attitude during the boost control phase. The pitch attitude autopilot is deactivated when the required attitude is obtained. The missile will then free fall to the target area. In the terminal portion of flight, the pitch rate autopilot is activated so that the missile can be guided by means of proportional navigation to the target. The roll attitude autopilot is used to roll stabilize the missile throughout its complete flight for indirect and direct fire missions. The pitch attitude or the pitch rate autopilot (not both) and proportional navigation will be used from lift off to target impact in the direct fire case. The gains and compensation networks obtained from this analytical analysis must be optimized on an analog computer to obtain the final design values. (Author)

Descriptors :   (*AUTOMATIC PILOTS, NUMERICAL ANALYSIS), (*ARTILLERY ROCKETS, INERTIAL GUIDANCE), FLIGHT CONTROL SYSTEMS, ROLL, PITCH(MOTION), ANGLE OF ATTACK, ASCENT TRAJECTORIES, DESCENT TRAJECTORIES, EQUATIONS OF MOTION, PROPORTIONAL NAVIGATION.

Subject Categories : Rockets

Distribution Statement : APPROVED FOR PUBLIC RELEASE