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Space Forum / Shuttle / November 2006Different SRB's??
As i am looking at Discovery's rollout, it looks like there ar two different SRB's on this stack, or what???  SignatureReguardes Henrik Værum Høgh Denmark, Europe. > As i am looking at Discovery's rollout, it looks like there ar two different > SRB's on this stack, or what??? Have a particular picture you are refering to? I don't see anything unusual. Note that the left SRB has a black painted band on it for identification purposes. SignatureRichard W Kaszeta rich@kaszeta.org http://www.kaszeta.org/rich > > As i am looking at Discovery's rollout, it looks like there ar two different > > SRB's on this stack, or what??? > > Have a particular picture you are refering to? I don't see anything > unusual. Note that the left SRB has a black painted band on it for > identification purposes. Thats what i see. I have been looking a littel closer, and it looks like two differenet boosters. Silly me, it's the first time i notice that black painted band on the lest booster.. ;-)) Henrik If its not a silly question, surely there must be a way to tell which is which without the line. Has this always been there? Brian who wonders why anyone cares which is which. SignatureBrian Gaff - briang1@blueyonder.co.uk Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. > >> > As i am looking at Discovery's rollout, it looks like there ar two [quoted text clipped - 12 lines] > booster.. ;-)) > Henrik > If its not a silly question, surely there must be a way to tell which is > which without the line. Has this always been there? > > Brian who wonders why anyone cares which is which. Because if they bolt them on backwards, the Shuttle will go into a retrograge orbit. ;-) Rusty "Brian Gaff" <briang1@blueyonder.co.uk> wrote in news:ZZK4h.49798$r61.25932 @text.news.blueyonder.co.uk: > If its not a silly question, surely there must be a way to tell which is > which without the line. Has this always been there? > > Brian who wonders why anyone cares which is which. The line is there to add an additional layer of identification-at-a-glace to the boosters. During flight & recovery expecially. Each have unique id's, of course. Who cares which is which? Do you care which hand is attached to you left arm? Would your right hand do as well? The boosters are *not* identical only very similar with a mirrored layout for controls, etc. Well, I suppose I asked for that, but what I mean is that one assumes if they find two, they must be a left and a right. Brian SignatureBrian Gaff - briang1@blueyonder.co.uk Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. > "Brian Gaff" <briang1@blueyonder.co.uk> wrote in > news:ZZK4h.49798$r61.25932 [quoted text clipped - 13 lines] > do as well? The boosters are *not* identical only very similar with a > mirrored layout for controls, etc. > If its not a silly question, surely there must be a way to tell which is > which without the line. Has this always been there? > > Brian who wonders why anyone cares which is which. My guess is the line was useful in the Challanger accident. Danny Dot www.mobbinggonemad.org >>> > As i am looking at Discovery's rollout, it looks like there ar two >> different [quoted text clipped - 12 lines] >> booster.. ;-)) >> Henrik Rockets have long been painted with distinctive patterns and markings. Think about or find a picture of the Gemini/Titan II or of any of the Saturns. They all had large distinctive high-contrast markings. One function of these markings was to allow the measurement of vehicle motions and rates of motion when examining tracking camera film or video. The information was used to validate telemetry and for gaining insights into vehicle behavior and performance, especially when things went wrong and it ended up being a bad day. The Orbiter, of course, conveniently has large areas of contrasting tiles so no markings are needed for that purpose. It is not surprising that the SRBs are marked in the same way especially to facilitate distinguishing between the two boosters after separation from the rest of the stack. Blue skies to all and take care . . . John >> If its not a silly question, surely there must be a way to tell which is >> which without the line. Has this always been there? >> >> Brian who wonders why anyone cares which is which. > > My guess is the line was useful in the Challanger accident. Hmm, my memory was taht it was added after taht. > Danny Dot > www.mobbinggonemad.org > "Danny Dot" <don't.mail.me@no.way> wrote in message >> My guess is the line was useful in the Challanger accident. > > Hmm, my memory was taht it was added after taht. Specifically because it was difficult to tell which SRB was which from the not so great video after the break-up of the stack. Note that this sort of identification scheme has also been applied to space suits. Otherwise, it's hard to tell who's who when they're in identical looking space suits. Jeff Signature"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety" - B. Franklin, Bartlett's Familiar Quotations (1919) |
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