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- Newsgroups: sci.space
- Path: sparky!uunet!spool.mu.edu!agate!rsoft!mindlink!a752
- From: Bruce_Dunn@mindlink.bc.ca (Bruce Dunn)
- Subject: Titan and Shuttle SRBs
- Organization: MIND LINK! - British Columbia, Canada
- Date: Sun, 27 Dec 1992 05:36:20 GMT
- Message-ID: <18930@mindlink.bc.ca>
- Sender: news@deep.rsoft.bc.ca (Usenet)
- Lines: 38
-
- > Brian Stuart Thorn writes:
- >
- > SRMs related to the Shuttle's SRBs? For beginners, the Titan SRM first
- > flew in 1965 (Titan IIIC) while Shuttle SRB did not first fire until
- > 1977 and did not fly until 1981. Titan SRMs are manufactured by
- > Lockheed and Aerojet, I think. Shuttle SRBs by Thiokol.
- >
- > Even if you are referring to the new 7-segment Titan IV SRMs, still
- > the answer is no. These were designed, but never built, for the
- > MOL program. I believe that if there is any connection, it's vice
- > versa.
- >
-
-
- Correct - the Shuttle SRBs are derived from experience gained with
- the Titan boosters, not the other way around. From "Advanced Chemical Rocket
- Propulsion" by Y.M. Timnat:
-
- " The high reliability demonstrated by the Titan III solid boosters
- was the main reason that NASA decided, after studying the advantages and
- disadvantages of solid versus liquid boosters, of parallel and series burning
- and of various sizes, to use two solid-propellant boosters having a diameter
- of 371 cm, 38.1 m long and containing 502580 kg of propellant, using a
- segment configuration with the same [as the Titan] PBAN propellant."
-
- Both solid boosters use a segmented design, fabricated out of Ladish
- D6ac high strength steel. The thrust vector control however differs: the
- Titan uses N2O4 injection into the nozzle to deflect the exhaust, while the
- Shuttle boosters have a nozzle whose throat is attached to a flexible collar
- which allows the nozzle to be steered by a hydraulic system.
-
-
-
-
-
-
- --
- Bruce Dunn Vancouver, Canada Bruce_Dunn@mindlink.bc.ca
-