A Structural Weight Estimation Program (SWEEP) for Aircraft. Volume 1 - Executive Summary
Technical rept., sep 1971-Jun 1974
ROCKWELL INTERNATIONAL LOS ANGELES CA LOS ANGELES AIRCRAFT DIV
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Three computer programs were written with the objective of predicting the structural weight of aircraft through analytical methods. The first program, the structural weight estimation program SWEEP, is a completely integrated program including routines for airloads, loads, spectra, skin temperatures, material properties, flutter stiffness requirements, fatigue life, structural sizing, and for weight estimation of each of the major aircraft structural components. The program produces first-order weight estimates and indicates trends when parameters are varied. Fighters, bombers, and cargo aircraft can be analyzed by the program. The program operates within 100,000 octal units on the Control Data Corporation 6600 computer. Two stand-alone programs operating within 100,000 octal units were also developed to provide optional data sources for SWEEP. These include the flexible airloads program to assess the effects of flexibility on lifting surface airloads, and the flutter optimization program to optimize the stiffness distribution required for lifting surface flutter prevention. This volume, Volume I, summarizes the program and its capabilities.
- Computer Programming and Software