241. Generalized Value Engineering Analysis for Minimum Weight and Space Envelope, Maximum Reliability

Paper

Abstract

It is the objective of this paper to present the highlights of the analytical method currently used to obtain optimum system worth of simultaneous minimum weight, minimum space envelope and maximum reliability for airborne and missile-borne electronic and electromechanical equipment.
The approach to achieving minimum weight and space and optimum maximum reliability is called Generalized Value Engineering. The typical Value Engineering concepts of reducing costs are generalized by mathematical relationships to determine governing stresses, buckling allowables, margins of safety, configurations and schemes for minimum weight and space with positive low numerical values for margins of safety. The structural racks were analyzed as complex frameworks Including Vierendeel truss action. Myklestad’s notation and equations were used to determine the distribution of shears, bending moments, deflections and rotations throughout the framework. The modules supporting the racks were analyzed as truss-type members allowing for partial fixity at the joints.