B-1B Improved Windshield Development. Volume 2. Magna Analysis: Baseline and Parametric
Abstract
This report documents analyses which supported a study aimed at eliminating B-1B windshield problems which surfaced when the aircraft became operational. Optics and durability were immediately degraded by delamination. The many edge attachments made windshield changeout difficult and time- consuming, thereby affecting supportability. The objective of these analyses was to evaluate the impact of design configuration changes proposed to alleviate the in-service problems on the structural performance of the windshield system when subjected to birdstrike or internal cabin pressure. The MAGNA finite element analysis code was used to evaluate the structural performance of the current production configuration, which served as a baseline, and the alternate design configurations. The fasteners were evaluated based on MAGNA output using additional computer programs. Computations were made first assuming all fasteners were present, then assuming every other fastener was removed. The models and analyses are discussed and summary results for each design configuration presented. Conclusions are drawn regarding the viability of the proposed alternate design configurations in view of their impact on the structural performance of the windshield system. MAGNA(Materially And Geometrically Nonlinear Analysis); Nonlinear static/dynamic analysis; Tradeoff analysis; Jet bombers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1990
- Accession Number
- ADA221501
Entities
People
- Michael P. Bouchard
- William Braisted
Organizations
- University of Dayton