Accession Number : ADA532018


Title :   Silicon Carbide Technologies for Lightweighted Aerospace Mirrors


Descriptive Note : Conference paper


Corporate Author : AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH


Personal Author(s) : Matson, Lawrence E. ; Chen, Ming Y. ; deBlonk, Brett ; Palusinski, Iwona A.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA532018


Report Date : SEP 2008


Pagination or Media Count : 10


Abstract : The use of monolithic glass and beryllium to produce lightweighted aerospace mirror systems has reached its limits due to the long lead times, high processing costs, environmental effects and launch load/weight requirements. New material solutions and manufacturing processes are required to meet DoD's directed energy weapons, reconnaissance/surveillance, and secured communications needs. Over the past several years the Air Force, MDA, and NASA has focused their efforts on the fabrication, lightweighting, and scale-up of numerous silicon carbide (SiC) based materials. It is anticipated that SiC can be utilized for most applications from cryogenic to high temperatures. This talk will focus on describing the SOA for these (near term) SiC technology solutions for making mirror structural substrates, figuring and finishing technologies being investigated to reduce cost time and cost, and non-destructive evaluation methods being investigated to help eliminate risk. Mirror structural substrates made out of advanced engineered materials (far term solutions) such as composites, foams, and microsphere arrays for ultra lightweighting will also be briefly discussed.


Descriptors :   *AEROSPACE SYSTEMS , *MIRRORS , *SILICON CARBIDES , LIGHTWEIGHT , MICROSPHERES , BERYLLIUM , MONOLITHIC STRUCTURES(ELECTRONICS) , DIRECTED ENERGY WEAPONS , SPACE BASED , GLASS , SUBSTRATES , SYMPOSIA , COMMUNICATION AND RADIO SYSTEMS


Subject Categories : CERAMICS, REFRACTORIES AND GLASS
      OPTICS
      UNMANNED SPACECRAFT


Distribution Statement : APPROVED FOR PUBLIC RELEASE