Control of a Space-based Electromagnetically Launched Projectile via a Modified Nutation Damper

Period of Performance: 07/15/1987 - 07/30/1989

$464K

Phase 2 SBIR

Recipient Firm

Coleman Research Corp.
5950 LAKEHURST DRIVE
Orlando, FL 32819
Principal Investigator

Abstract

A NOVEL TARGET SCANNING MECHANISMS IS BEING DEVELOPED FOR SPACE-BASED ELECTROMECHANICALLY-LAUNCHED PROJECTILE THAT EMPLOYS THE CONCEPT OF AN ACTIVE/PASSIVE MULTI-ELEMENT NUTATION DAMPER TO DECAY AND INDUCE NUTATION MOTION IN A PREDICTABLE AND CONTROLLABLE MANNER. A MATHEMATICAL MODEL OF A NUTATION DAMPER RESPONSE MECHANISM WAS CONCEPTUALIZED AND REFINED DURING AN EARLIER RESEARCH PHASE. THE FINAL VERSION OF THE COMPUTER MODEL CURRENTLY IS BEING DEVELOPED FOR INCORPORATION INTO A SIX DEGREE OF FREEDOM SIMULATION PROGRAM TO PREDICT THE COMPLETE SYSTEM (I.E., THE VEHICLE AND NUTATION DAMPER) DYNAMICS. ALL THE MATHEMATICAL FORMULATIONS AT A SUBSYSTEM LEVEL ARE BEING INTEGRATED TO ACHIEVE A SYSTEM LEVEL OR GLOBAL CONTROL LAW. A PROOF OF PRINCIPLE TEST IS BEING DESIGNED, FABRICATED, AND CONDUCTED AND THE RESULTS ANALYZED. WHEN SUCCESSFULLY DEMONSTRATED, THE RESULTANT SCANNER WILL HAVE A MINIMUM NUMBER OF MOVING PARTS AND, THEREFORE, MAXIMUM POSSIBLE RUGGEDNESS AND STRENGTH, EXTREME RELIABILITY, AND LOW LIFE-CYCLE COSTS. THERE ARE MANY DIFFERENT TYPES OF DEFENSE, SPACE, AND COMMERCIAL SCANNERS IN WHICH THE PROPOSED DEVICE MAY BE ADVANTAGEOUS INCLUDING: INFRARED, LASER, AND MILLIMETER WAVE SCANNERS/SEEKERS. DEFENSE APPLICATIONS INCLUDE ANY SPIN STABILIZED "SMART" MUNITION. MEDICAL APPLICATIONS INCLUDE CAT, IR, ULTRASONIC AND NMR SCANNERS.