Accession Number:

ADA305157

Title:

Design, Fabrication, and Structural Testing of a Lightweight Shadow Shield for Deep-Space Application.

Descriptive Note:

Technical note,

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Report Date:

1977-03-01

Pagination or Media Count:

50.0

Abstract:

Two 3. 05-meter-diameter 10-ft-diam, full-scale, lightweight, double-sheeted shadow shields were developed as the primary element of a deep-space thermal protection system for liquid-hydrogen propellant tankage. The thermal and mechanical considerations used in the design of the shields, the method of fabrication, and the environmental testing results on a prototype shield are discussed. Testing consisted of a transient cooldown period, a prolonged cold soak, and a transient warmup. The results of the tests demonstrated that the mechanical and thermal analyses used in the shield design are sufficient to produce a lightweight i. e., 8. 3 kg 18. 2 lb, rugged shadow shield assembly that is structurally adequate for its intended application.

Subject Categories:

  • Safety Engineering
  • Thermodynamics
  • Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE