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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!menudo.uh.edu!ccsvax.sfasu.edu!a_willisgt
- From: a_willisgt@ccsvax.sfasu.edu
- Newsgroups: sci.space.shuttle
- Subject: Re: black tiles on the space shuttle
- Message-ID: <1992Dec26.193551.2233@ccsvax.sfasu.edu>
- Date: 26 Dec 92 19:35:51 CST
- References: <725334983@romeo.cs.duke.edu> <72446@cup.portal.com>
- Organization: Stephen F. Austin State University
- Lines: 28
-
- In sci.space.shuttle, BrianT@cup.portal.com (Brian Stuart Thorn) writes:
- > The shuttle uses many different types of thermal insulation. There
- > are tiles and thermal blankets, and there are varieties of each.
- > The black tiles are rated for the highest temperatures and are used
- > where the shuttle gets the greatest heating (the underside, the nose,
- > and the leading edge of the tail). White tiles are next, with the
- > second-highest rated protection, and are used on the forward fuselage,
- > the aft area, and the tail. The lowest temperatures on the shuttle
- > are experienced on the upper surfaces, i.e., the tops of the wings
- > and the tops of the payload bay doors...
- >
- > That's a simple, but not complete or 100% accurate description. The
- > Shuttle also uses a grey thermal insulation on the wing leading
- > edges, but I'm not sure which category they belong to.
-
- The grey insulation is a composite material called RCC (reinforced
- carbon-carbon). It is used only on the nose of the orbiter, and the leading
- edges of the wings - the two places where the orbiter gets hottest during
- descent. RCC can withstand much higher temperatures than the black tiles can.
-
- The principal drawback of RCC is the price - I heard once that, to replace a
- half-meter strip on one of the orbiter's wings cost somewhere around $6 million
- bucks...
-
- Ty Willis
- Stephen F. Austin State University
- a_willisgt@ccsvax.sfasu.edu
-
-