Accession Number:

AD1101734

Title:

Analysis of Additively Manufactured Rings Under Compression Loading for Use in a Vacuum Lighter Than Air Vehicle Structure

Descriptive Note:

Technical Report,01 Sep 2018,26 Mar 2020

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States

Personal Author(s):

Report Date:

2020-03-26

Pagination or Media Count:

178.0

Abstract:

A Vacuum Lighter Than Air Vehicle VLTAV utilizes a lightweight structure paired with an internal vacuum to achieve buoyancy this allows it to float through-out a given atmosphere. The pressure differential between the internal vacuum and external atmosphere places the vehicle under intense loading. A specific structure under investigation is the celestial icosahedron, which features nine intersecting rings that have an outer diameter of 0.2032m and circular cross-sectional thickness of 5.08mm. The celestials rings are positioned in three different orientations and are analyzed both experimentally and analytically.

Subject Categories:

  • Lighter-than-air Aircraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE