Soyuz TMA-11 Comes Home, More or Less...

Soyuz TMA-11 with Yi So-yeon, Yuri Malenchenko and Peggy Whitson has
landed in Kazakhstan, 400 km from its intended landing spot.

Was this another ballistic entry? I take it that horseshoes isn't a
popular game in Russia

Dale

Errr, that "isn't" was meant to be an "is"- as in
"close enough only counts in horseshoes and
hand grenades"

Being 400 km off with an intended landing at
KSC would probably make the news, as well as
quite a splash...

Dale

Dale Carlson wrote:
Soyuz TMA-11 with Yi So-yeon, Yuri Malenchenko and Peggy Whitson has
landed in Kazakhstan, 400 km from its intended landing spot.

Was this another ballistic entry?


Yup, that's two off-target landings in a row:
http://www.cnn.com/2008/TECH/space/04/19/skorea.soyuz/

Pat

On Apr 19, 8:39 am, Pat Flannery wrote:
Dale Carlson wrote:
Soyuz TMA-11 with Yi So-yeon, Yuri Malenchenko and Peggy Whitson has
landed in Kazakhstan, 400 km from its intended landing spot.

Was this another ballistic entry?

Yup, that's two off-target landings in a row:http://www.cnn.com/2008/TECH/space/04/19/skorea.soyuz/

Pat
According to Spaceflight Now and Space.com, it was an 10g ballistic
reentry. If memory serves me correctly, this means there was a problem
with the guidance system.
This is the third time a Soyuz T spacecraft has come down in this
manner.
The first time it happened, the crew was so disabled from high g
levels that they could not stand up and had to crawl on hands and
knees after they got out of the reentry module.

M wrote:
Yup, that's two off-target landings in a row:http://www.cnn.com/2008/TECH/space/04/19/skorea.soyuz/

Pat

According to Spaceflight Now and Space.com, it was an 10g ballistic
reentry. If memory serves me correctly, this means there was a problem
with the guidance system.


It's designed to default to ballistic reentry if the guidance system
does anything even slightly abnormal prior to or during reentry.
The Russians consider a survivable high-G reentry much preferable to a
abnormal one that results in the destruction of the capsule. I don't
know if they've fixed this problem yet, but for a long time they'd been
reusing guidance computers out of returned capsules due to a lack of a
indigenous supply source for them after the USSR broke up.
However, this many ballistic reentries shows a completely unacceptable
level of reliability on the part of the guidance system.
The Soyuz TMA presently uses the Argon 16 computer, a 70 kg analog type
prehistoric monster of a thing dating from 1973. From TMA-13 (this was
TMA-11) forward, this will be replaced with a improved one, the TsVM-101
Here's info on the two computer systems:
http://www.computer-museum.ru/english/argon16.htm
http://suzymchale.com/kosmonavtka/soyuz.html
The new one weighs less than 1/7 as much as the old one.
BTW, this is interesting - a history of Soyuz control panel layouts:
http://suzymchale.com/kosmonavtka/soyconsole.html

Pat

On Sun, 20 Apr 2008 00:47:37 -0500, Pat Flannery wrote:

The Russians consider a survivable high-G reentry much preferable to a
abnormal one that results in the destruction of the capsule.

I'm with the Russians on this one.

--
One way ticket from Mornington Crescent to Tannhauser Gate please.

On Apr 20, 2:10 pm, Fevric J Glandules wrote:
On Sun, 20 Apr 2008 00:47:37 -0500, Pat Flannery wrote:
The Russians consider a survivable high-G reentry much preferable to a
abnormal one that results in the destruction of the capsule.

I'm with the Russians on this one.

--
One way ticket from Mornington Crescent to Tannhauser Gate please.

Me too, but it must be a punishing ride for a crew that has spent
months in zero gee to endure ten gees....
crammed with your ankles into your rear end in those cramped seat
liners.

On Apr 19, 5:59*am, Dale Carlson wrote:
Soyuz TMA-11 with Yi So-yeon, Yuri Malenchenko and Peggy Whitson has
landed in Kazakhstan, 400 km from its intended landing spot.

Was this another ballistic entry? I take it that horseshoes isn't a
popular game in Russia

Dale

Tonight NBC news had some locals who had seen it come down and one
said "the parachute was on fire". Discounting any possible confusion
with "thump down"this is a whole other story. Could ballastic
reentry have done this (if true)? Sort of reminds me of Komarov's
reentry...................Doc

On Sat, 19 Apr 2008 16:06:21 -0700 (PDT),
wrote:

Tonight NBC news had some locals who had seen it come down and one
said "the parachute was on fire". Discounting any possible confusion
with "thump down"this is a whole other story. Could ballastic
reentry have done this (if true)? Sort of reminds me of Komarov's
reentry...................Doc

Were there reports that the parachute was on fire as it was coming
down? What I read simply said the chute was on fire when the recovery
team reached the capsule. Seems like that could have been caused by
a brush fire or something ignited by the landing rockets. But either
way, it wasn't a soft landing, as the capsule was embedded 30cm into
the ground (unless, of course, it landed in a bog or something).

I liked the comment by the official blaming the crew- saying that they
overshot because they had selected a ballistic reentry without telling
mission control. What a bunch of irresponsible thrillseekers

Dale

On Apr 19, 4:58 pm, Dale Carlson wrote:
On Sat, 19 Apr 2008 16:06:21 -0700 (PDT),
wrote:

Tonight NBC news had some locals who had seen it come down and one
said "the parachute was on fire". Discounting any possible confusion
with "thump down"this is a whole other story. Could ballastic
reentry have done this (if true)? Sort of reminds me of Komarov's
reentry...................Doc

Were there reports that the parachute was on fire as it was coming
down? What I read simply said the chute was on fire when the recovery
team reached the capsule. Seems like that could have been caused by
a brush fire or something ignited by the landing rockets. But either
way, it wasn't a soft landing, as the capsule was embedded 30cm into
the ground (unless, of course, it landed in a bog or something).

I liked the comment by the official blaming the crew- saying that they
overshot because they had selected a ballistic reentry without telling
mission control. What a bunch of irresponsible thrillseekers

Dale

I saw a mention of fire in the Reuters report.
But I would trust aerospace news media more for accurate information