How fast can you get though a checklist?
Jorge R. Frank
>
> I would imagine that you could probably get though the reentry checklist
> faster than 20min. How fast can they do it in the sim?
About 30 minutes. :-( At least, the first time through...
> Bear in mind that in
> orbit they would be able to reach hard to get to commands quicker(?) because
> of no gravity. Does anyone have a copy of the emergency reentry checklist?
> What items could be left out in emergency?
Not a whole lot. The "normal" deorbit checklist has all the
nice-to-have steps in it, but the "Emergency Deorbit" checklist has been
pretty much pared down to the essentials:
Stow the Ku-band antenna and the RMS, jettison them if you don't have
time.
Close the payload bay doors.
Install MS seats and bailout pole and don suits.
Power up the rate gyros
Load the entry software into the shuttle computers.
Compute the deorbit targets (or get them from Houston).
Perform the deorbit burn and jump to the normal entry checklist (after
the deorbit burn, an entry is an entry).
> Could they wait to after the burn
> before putting the seats back together in the time between the burn and
> entry interface?
In a real pinch, yes. However, this can usually be done in parallel
with the Ku-band/RMS stow/close payload bay doors step, which only
requires 1 or 2 crew members.
Keep in mind that the Emergency Deorbit checklist is rarely performed by
itself. Depending on the situation that caused you to need an emergency
deorbit in the first place, the crew is probably working a number of
procedures in parallel. For example, a cabin leak or total loss of
cooling (loss of 2 Freon loops, 2 H2O loops, or 2 cabin fans) requires
a contingency powerdown. And if the emergency occurs while docked, the
crew would have to perform a procedure called "Joint Expedited Undocking
and Separation" to get away from ISS quickly. Coordination between the
crew members must be crisp and precise; for example, there are steps in
the contingency powerdowns that take down equipment that would be
*needed* for the Joint Expedited Undocking and Separation. The crews
must recognize the "breakpoints" in the procedures and work together to
ensure they take the right "path" through the checklist. Freelancing
the procedures can be deadly.
--
JRF
Reply-to address spam-proofed - to reply by E-mail,
check "Organization" and think one step ahead of IBM.
David Findlay
orbit they would be able to reach hard to get to commands quicker(?) because
of no gravity. Does anyone have a copy of the emergency reentry checklist?
before putting the seats back together in the time between the burn and
entry interface?
David Findlay
David Findlay
simulator software on my PC to play with all these sorts of procedures...
David Findlay
"Jorge R. Frank" <jrf...@ibm-pc.org> wrote in message
news:399229FE...@ibm-pc.org...
> David Findlay wrote:
> >
> > I would imagine that you could probably get though the reentry checklist
> > faster than 20min. How fast can they do it in the sim?
>
> About 30 minutes. :-( At least, the first time through...
>
> > Bear in mind that in
> > orbit they would be able to reach hard to get to commands quicker(?)
because
> > of no gravity. Does anyone have a copy of the emergency reentry
checklist?
> > What items could be left out in emergency?
>
> Not a whole lot. The "normal" deorbit checklist has all the
> nice-to-have steps in it, but the "Emergency Deorbit" checklist has been
> pretty much pared down to the essentials:
>
> Stow the Ku-band antenna and the RMS, jettison them if you don't have
> time.
> Close the payload bay doors.
> Install MS seats and bailout pole and don suits.
> Power up the rate gyros
> Load the entry software into the shuttle computers.
> Compute the deorbit targets (or get them from Houston).
> Perform the deorbit burn and jump to the normal entry checklist (after
> the deorbit burn, an entry is an entry).
>
> > Could they wait to after the burn
> > before putting the seats back together in the time between the burn and
> > entry interface?
>
Roger Balettie
>Does anyone have a copy of the emergency reentry checklist?
Yes... but only in "paper" format. :)
> What items could be left out in emergency?
None, really... that's the whole point of coming up with this list and
calling it the *emergency* deorbit checklist, right? :)
As we've talked about, there are some items that may be put off until
*after* the deorbit burn, but... as Jorge also pointed out... rarely is
this checklist being performed *on its own*. Usually, the crew is also
struggling with whatever problem forced them into an emergency deorbit
scenario to begin with!
Roger
==============================
Roger Balettie
former Flight Dynamics Officer
Space Shuttle Mission Control
http://members.aol.com/ramjetfdo/
JF Mezei
> As we've talked about, there are some items that may be put off until
> *after* the deorbit burn, but... as Jorge also pointed out... rarely is
> this checklist being performed *on its own*. Usually, the crew is also
> struggling with whatever problem forced them into an emergency deorbit
> scenario to begin with!
How many astronauts are required to do the emergency checklist, and how many
would be free to take care of whatever problem is causing the emergency to
begin with ?
For instance, if you have one very sick astronaut, would another one take care
of the sick one, while the 5 others do the checklist, or would they leave the
sick one in a corner, and all remaining 6 be active in the checklist ?
Or is there a point above which you have too many bodies interfering with each
other and it becomes less productive ?
spac...@my-deja.com
jrf...@ibm-pc.org wrote:
> And if the emergency occurs while docked, the
> crew would have to perform a procedure called "Joint Expedited
Undocking
> and Separation" to get away from ISS quickly.
Ya know, if they called it "Joint Expedited *Station* Undocking
and Separation", they could shorten it to "JESUS", as in "Jesus H.
Christ-on-a-bike, let's get OUTTA HERE!!" :-o ;-) :-)
Just kidding; no offense intended...
Gus
Sent via Deja.com http://www.deja.com/
Before you buy.
Stephen Clark
>ones? There is a book that has a whole heap of procedures in it, "Space
>Shuttle Operators Manual" or something. How accurate are the checklists in
>this? Are they up to date?
I dunno how much the procedures with the MEDS would differ, but I do have a
copy of the book that you are referring to. I have the "revised edition" which,
according to the copyright page, was written in 1988. So, some of the
post-Challenger additions/changes may be included.
However, the front cover still lists Columbia, Challenger, Discovery, and
Atlantis as the four orbiters. I have found no reference to Endeavour, or even
the idea that a new orbiter would be built after the Challenger accident.
So, I would take it as a rough timeline and overview of shuttle operations, but
I wouldn't for minute-by-minute and blow-by-blow detailed coverage. It does
have some rather interesting diagrams/drawings/pictures of the flight deck and
mid-deck.
Stephen Clark
www.spaceflightnow.com
STS-106
Jorge R. Frank
>
> Are these checklists available on the net anywhere? I wish I had some
> simulator software on my PC to play with all these sorts of procedures...
I haven't found them anywhere on the public internet. They are on JSC's
intranet, but that's behind a firewall.
Jorge R. Frank
>
> In article <399229FE...@ibm-pc.org>,
> jrf...@ibm-pc.org wrote:
> > And if the emergency occurs while docked, the
> > crew would have to perform a procedure called "Joint Expedited
> Undocking
> > and Separation" to get away from ISS quickly.
>
> Ya know, if they called it "Joint Expedited *Station* Undocking
> and Separation", they could shorten it to "JESUS", as in "Jesus H.
> Christ-on-a-bike, let's get OUTTA HERE!!" :-o ;-) :-)
>
> Just kidding; no offense intended...
That's *already* the internal nickname of the procedure[1]. No kidding.
:-)
--
[1] - the more politically correct folks at JSC call it the JEUS,
pronounced "juice."
---
Jorge R. Frank
>
> Would the checklists for the new MEDS system be the same as the original
> ones?
They're very similar. The first generation of MEDS simply emulated the
old CRT screens and mechanical displays, so most of the procedure
changes involved simple terminology changes (e.g. substitute "IDP"
wherever the word "CRT" appears). The only procedures that are
substantially different are for display troubleshooting.
> There is a book that has a whole heap of procedures in it, "Space
> Shuttle Operators Manual" or something. How accurate are the checklists in
> this? Are they up to date?
This is the blue-covered book by Joels, Kennedy, and Larkin, right? The
procedures in that book are very simplified, but they wouldn't need many
changes for MEDS, mainly changing "CRT" to "IDP".
David Findlay
Would the checklists for the new MEDS system be the same as the original
ones? There is a book that has a whole heap of procedures in it, "Space
Shuttle Operators Manual" or something. How accurate are the checklists in
this? Are they up to date?
David Findlay
Joseph Nastasi
ne...@bigpond.com wrote on 8/10/00 6:08 PM:
> There is a book that has a whole heap of procedures in it, "Space
> Shuttle Operators Manual" or something. How accurate are the checklists in
> this? Are they up to date?
They are the "reader's digest" version and the book is fairly out of date
(1982 - although most of what's there is probably correct).
I'd classify them as relatively accurate, but inadequate in detail...
Cheers,
Joe
--
Joseph Nastasi
YOU ARE GO!
Educational Space Simulations
http://www.u-r-go.com
"as far as we reach out into space, as deep we reach inside ourselves"