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From: gregc@cimage.com (Greg Cronau)
Newsgroups: sci.space.shuttle
Subject: Re: Shuttle Status for 02/22/91 (Forwarded)
Message-ID: <1991Mar1.001042.9153@cimage.com>
Date: 1 Mar 91 00:10:42 GMT
References: <1991Feb22.223855.6112@news.arc.nasa.gov> <1991Feb27.123109.540@axion.bt.co.uk>
Reply-To: gregc@dgsi.UUCP (Greg Cronau/10000)
Organization: Cimage Corp, Ann Arbor, MI
Lines: 25

In article <1991Feb27.123109.540@axion.bt.co.uk> sjeyasin@zaphod.axion.bt.co.uk writes:
>From article <1991Feb22.223855.6112@news.arc.nasa.gov>, by yee@trident.arc.nasa.gov (Peter E. Yee):
>> 
>>             KSC SHUTTLE STATUS REPORT - FRIDAY, FEB. 22, 1991 - 9:30 a.m.
>> 
>>                        STS-39/DoD - DISCOVERY (OV 103) - PAD A
>>                                  LAUNCH - MARCH 1991
>> 
>>           WORK IN PROGRESS:
>>           - Evaluation of cracks in hinges for the external tank right  and
>>           left doors.
>		 ^^^^^
>Anyone able to say what these are ? Hard to imagine what kind of doors a tank
>can have.
>
>Swaraj Jeyasingh                sjeyasin@axion.bt.co.uk
>British Telecom Research Labs
>United Kingdom

I believe these are for the 2 points on the aft underbelly of the shuttle
where the External Tank support struts attach. After ET separation, these
doors close over the attachment points. I would assume that the doors are
covered with thermal tiles, similiar to the landing gear doors.

gregc@cimage.com