Accession Number : ADA192954

Title :   The Use of Liquid Films for Spacecraft Survivability to Laser Radiation.

Descriptive Note : Final rept.,

Corporate Author : PHYSICAL SCIENCES INC ANDOVER MA

Personal Author(s) : Gelb,

PDF Url : ADA192954

Report Date : 15 May 1987

Pagination or Media Count : 3

Abstract : This contains the results of a phase II SBRI program to investigate the concept of liquid film protection of spacecraft materials from laser interaction. The liquid film protection concept consists of using a reflective thin film coating over a graphitic substrate to reduce the absorbed laser energy and hence the degree of damage caused by the laser interaction. The required properties of thin film are: 1) it liquifies a temperatures substantially below that for substantial substrate vaporization, 2) its vaporization temperature is much higher than the substrate, and 3) the liquified film must allow the passage of substrate vaporization products through it without destroying the film coherence.

Descriptors :   *LIQUIDS, *SPACECRAFT, *THIN FILMS, COATINGS, COHERENCE, DAMAGE, ENERGY, GRAPHITE, INTERACTIONS, LASER BEAMS, LASERS, MATERIALS, PROTECTION, REFLECTION, SPACECRAFT COMPONENTS, SUBSTRATES, SURVIVABILITY, TEMPERATURE, VAPORIZATION

Subject Categories : Physical Chemistry
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE