Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > Space and Astronomy > Space Exploration
Register FAQ Members List Calendar Mark Forums Read

   

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 21-January-2007, 03:38 AM
SpaceNutNewmars SpaceNutNewmars is offline
Member
 
Join Date: Sep 2005
Location: New Hampshire
Posts: 89
Default

Rather than putting this over on Newmars in the thread that you started on MORV (Multipurpose Orbital Rescue Vehicle). I felt that it was more to the point of Hubble in that we want it fixed. Since the move the Hubble thread is close it leaves this one to place it in. Thou it will change nothing since the repair has been set in motion. This is more for gaetanomarano;

At the time in late 2003 a decision was made to not service Hubble and lots of campaints were launched to get a mission to fix it. Nasa at the time felt that no safe Haven meant that no Hubble mission was possible.
I think that it was part of the CAIB that suggested the second shuttle on standby.

After seeing the image of the shuttle with your MORV in it I recalled that I had sent to the then Hubble director a simular idea to give safe return instead of safe haven. At the time it was not possible to purchase a seat let alone the capsule to serve as a rescue pod. But it was an out of the box suggestion that needed to be offered even if nothing became of it.




Multipurpose Orbital Rescue Vehicle

The copy of what was sent less email address and my real name...

Quote:
----- Original Message -----
From:
To: Steven Beckwith
Sent: Tuesday, February 10, 2004 8:08 AM
Subject: Servicing Mission 4 Cancelled


Hi Steven Beckwith

Is Nasa really looking for ways to save the Hubble, the ISS and the Shuttle. It sounds like from what I am hearing to me that they are truly not. The need of trying very hard may mean to think up unusual or out of the box approaches in any of these cases.

here are a few off the cuff thoughts

Saving the Hubble;
If it is possible place or stow a Soyuz capsule less launch and less orbital stuff inside the cargo bay of the shuttle. I believe the Soyuz is 13ft in diameter and the cargo is 15ft it seems like it would fit. This would satisfy the safe haven requirement for return from orbit if the shuttle were damaged and not repairable at that time. There is no other danger that would be encountered that would also not be present if the space ship were of a capsule design (CEV) or if the mission was to the ISS. If the capsule is not needed, you can leave it in orbit with the Hubble or you can just simply bring it back and have it for the next time that one is required. Of course there must be also room left over for all the upgrades that would be made on such a mission. Also attaching a camera for examining the shuttle to the Hubble for signal beam down before being allowed re-entry would allow for the same roll maneuvers that was suggested for the ISS rather than a space walk.

A slightly modified version of the shuttle C with an update cargo module; one that has a return safety capsule (CEV), a grapping section to latch onto the Hubble from the cargo container bay. Which would then have a follow up mission from the space shuttle with necessary hardware with a minimal staff to accomplish the task of retro fitting it with all the upgrades. Since the earlier shuttle C module is in place you now have a safe haven retreat provided by the CEV should anything go wrong. I assume that it needs to remain in it's current orbital alignment and altitude. Other wise use the shuttle C module once docked to tow it to the space stations orbital alignment and altitude for a later repair by the usual missions that are used to supply the International Space Station.


Explore Space and be Happy

Ps
I love all the Space images from the Hubble


Quote:
----- Original Message -----
From: Steven Beckwith
To:
Sent: Tuesday, February 10, 2004 5:20 PM
Subject: Re: Servicing Mission 4 Cancelled


Dear


I am receiving hundreds of e-mails from supporters of HST; you are not alone in wanting to see HST produce new observations. I will forward your suggestions to our tiger team looking at alternatives to SM4.


Right now, NASA and Congress will determine HST's future. O'Keefe said he would solicit a second opinion from Admiral Gehman, but he was clear in stating that he did not feel obliged to follow Gehman's advice. I suspect it will become the subject of Congressional hearings later this spring. However, O'Keefe feels it is his decision to make without outside interference.


I appreciate your support, and I know our staff at STScI does, too. Thanks for writing.


Steve Beckwith
Director, Space Telescope Science Institute
Of course the rest is history now with regards to shuttle tile exam before docking with the ISS, being able to purchase seats and the mission being a go to fix Hubble after all.
Reply With Quote
  #2 (permalink)  
Old 23-January-2007, 01:01 AM
gaetanomarano's Avatar
gaetanomarano gaetanomarano is offline
Senior Member
 
Join Date: Apr 2006
Location: Italy
Posts: 1,597
Default

Quote:
Originally Posted by SpaceNutNewmars View Post
...seeing the image of the shuttle with your MORV in it I recalled that I had sent to the then Hubble director a simular idea to give safe return instead of safe haven...
I've evaluated the Soyuz option, but rejected it, since a single 3-seats Soyuz (inlcuding the russian pilot) is not enough for rescue, while, two Soyuz need near ALL the Shuttle cargo-bay space (about 14 m. of 18 m. max) and payload-weight (about 14 mT) leaving near zero space and weight for the Hubble's repair-tools and the spare/repair/upgrade parts ...the max payload a Shuttle can lift changes with the altitude it must reach, then (probably) the 14 mT weight of two Soyuz may be close to (or exceed) the max payload a Shuttle can lift to the Hubble's ~600 km. orbit (also, each Soyuz needs a russian pilot) ...two possible alternatives are: (a) wait to launch the repair mission until Soyuz can be launched from Guiana and keep two Soyuz ready to fly for rescue, but this option looks close to (and has the same risks of) the "rescue-Shuttle ready to fly" option of the 2008's mission (also, two Soyuz need two russian pilots, so, the max Shuttle crew must be of four) ...or (b) launch (from Guiana) two remote-controlled Digital-Soyuz (if they will be available soon and have that feature) BEFORE the Hubble-repair-Shuttle launch (increasing the Hubble mission's cost of further ~$100M) ..it's a little complex, but may work ...as explained in my article, the (NASA and/or ESA and/or Russia and/or Privates) MORV is intended to be a "very fast and easy to learn and use" general purpose rescue-vehicle that everyone (astronauts, non-astronauts and tourists) will be able to use to save their life ...unfortunately, MORV needs time to develop, build and test it, then, it can't be ready for the 2008's Hubble mission (not even if it will be delayed a few years)

.
__________________
gaetanomarano.it
ghostNASA.com
Reply With Quote
  #3 (permalink)  
Old 23-January-2007, 03:39 AM
SpaceNutNewmars SpaceNutNewmars is offline
Member
 
Join Date: Sep 2005
Location: New Hampshire
Posts: 89
Default

gaetanomarano You would not need the complete soyuz since the orbital end is of no value it serves as living space, the propelant would be minimal at best to allow for deobit burn and the solar arrays would not be needed.

To exit the cargo bay go into the unit with space suits on and have the arm lift it from the bay.

Being now shorter and lighter in mass will now make it possible for 2 units to fit.
Reply With Quote
  #4 (permalink)  
Old 23-January-2007, 09:12 AM
gaetanomarano's Avatar
gaetanomarano gaetanomarano is offline
Senior Member
 
Join Date: Apr 2006
Location: Italy
Posts: 1,597
Default

Quote:
Originally Posted by SpaceNutNewmars View Post
gaetanomarano You would not need the complete soyuz since the orbital end is of no value it serves as living space, the propelant would be minimal at best to allow for deobit burn and the solar arrays would not be needed. To exit the cargo bay go into the unit with space suits on and have the arm lift it from the bay. Being now shorter and lighter in mass will now make it possible for 2 units to fit.
as you can see from the Soyuz schematics below, the Orbital Module is not only an "extra living space" but inside it there are all the life support systems of the vehicle (infact, the Orbital Module is jettisoned some minutes before the capsule reentry in the atmosphere) ...also, since the Hubble's orbit is around ~600 km. the Soyuz can't reentry in a few minutes but must perform some deorbits (procedures that need many hours or a day ...not minutes) so, both rescue-Soyuz must have their Orbital Module with a total lenght around 14 m. (about 80% of the cargo-bay) ...cut the solar arrays don't save so much weight since you must add a battery, but, most important, cut (both) the Orbital Module and the solar array is TOO RISKY for the astronauts ...the standard Soyuz has 14 day of life support for 3 astronauts, while, your version has only a few hours of life, and, since the Soyuz are used as lifeboats, they can't be more dangerous than the Shuttle itself (if something goes wrong on a Soyuz) and become a death-trap ...WITH the Orbital Module and the solar array but WITHOUT part of the propellant, each Soyuz may weigh around 6.7 mT and two Soyuz-light over 13.4 mT ...but, you can't fit two Soyuz inside the cargo-bay without a complex (and unexisting) SPECIAL HARDWARE to firmly clamp them (to avoid risks for the crew) and that "clamping" hardware may need years and money to develop, build and test it ...also, the "clamping hardware" for two big Soyuz (with many external structures that need to be protected from possible damages) will have its own "weight" (maybe, around 2-3 mT) reducing the available cargo-bay's space and Shuttle payload (for the Hubble repair tools and the repair/upgrade parts) to... zero ...last, each standard Soyuz needs a russian pilot to fly, reducing the Shuttle's crew to four astronauts (including commander and pilot) ...of course, everything can be changed in the standard Soyuz (or in the simpler MORV version) but it needs years and money


.
__________________
gaetanomarano.it
ghostNASA.com
Reply With Quote
  #5 (permalink)  
Old 23-January-2007, 12:12 PM
djellison djellison is offline
Senior Member
 
Join Date: Oct 2006
Posts: 964
Default

Quote:
Originally Posted by gaetanomarano View Post
]a few hours of life
.
Just like the X38 which was designed from the ground up for essentially - this exact purpose. Rapid return to Earth (from ISS not Hubble - but the specification is the same) in case of emergency.

And please - again I ask you - stop using excessive formatting. It looks childish, makes your words harder to read and doesn't highlight the importance of any words.

Doug
Reply With Quote
  #6 (permalink)  
Old 23-January-2007, 12:26 PM
gaetanomarano's Avatar
gaetanomarano gaetanomarano is offline
Senior Member
 
Join Date: Apr 2006
Location: Italy
Posts: 1,597
Default

Quote:
Originally Posted by djellison View Post
Just like the X38
infact, it was deleted
.
__________________
gaetanomarano.it
ghostNASA.com
Reply With Quote
  #7 (permalink)  
Old 23-January-2007, 01:20 PM
djellison djellison is offline
Senior Member
 
Join Date: Oct 2006
Posts: 964
Default

I know it was. (how stupid do you think I am?) The point is - that vehicle was the only one to date to progress significantly into development with the purpose of crew rescue alone. It had very limited life support capacity for the reason that all you want to do is get people on the ground, quickly. Nothing else. Whatever unrealistic fictional scenario you want to compose for crew rescue during Hubble servicing - you can forget requiring long life support - it's simply not needed.


Doug
Reply With Quote
  #8 (permalink)  
Old 23-January-2007, 02:12 PM
SpaceNutNewmars SpaceNutNewmars is offline
Member
 
Join Date: Sep 2005
Location: New Hampshire
Posts: 89
Default

Not sure what version of soyuz you are referencing but the current is a TMA.

According to these references
Russian Soyuz-TMA spacecraft

Russian Soyuz TMA Spacecraft Details

as to what is where.

Space suits have many hours of oxygen plus and with what is in the descent stage should be plenty. One could reroute the oxygen tanks from the propulsion stage into the descent to allow for the extended time if that is normally is needed.

Station Crew Returns To Earth gives a timeline of descent.

It looks like it departs at 2:00 p.m EDT and lands at 8:36 p.m. EDT, which puts it at a little under 7 hours not days.

Oh and we do not care where it comes down when we are in a hurry, so no orbit wait to line up to a landing zone..

Yes a special bracket to hold them in the cargo bay is a given and until you enter it to leave it is in a dead state or powered completly off. No need for extra batteries.
Reply With Quote
  #9 (permalink)  
Old 23-January-2007, 02:32 PM
gaetanomarano's Avatar
gaetanomarano gaetanomarano is offline
Senior Member
 
Join Date: Apr 2006
Location: Italy
Posts: 1,597
Default

Quote:
Originally Posted by djellison View Post
I know it was.
edit: [they realized it was too dangerous to be a lifeboat] infact, it was deleted

.
__________________
gaetanomarano.it
ghostNASA.com
Reply With Quote
  #10 (permalink)  
Old 23-January-2007, 02:41 PM
gaetanomarano's Avatar
gaetanomarano gaetanomarano is offline
Senior Member
 
Join Date: Apr 2006
Location: Italy
Posts: 1,597
Default

Quote:
Originally Posted by SpaceNutNewmars View Post
Space suits have many hours of oxygen plus
I think that a lifeboat must be safer than its spaceship and have only the spacesuits' oxygen is not safe enough
Quote:
...no orbit wait to line up to a landing zone...
Soyuz can't land everywhere (not in the ocean, not in a forest, etc.)
.
__________________
gaetanomarano.it
ghostNASA.com
Reply With Quote
  #11 (permalink)  
Old 23-January-2007, 02:41 PM
SpaceNutNewmars SpaceNutNewmars is offline
Member
 
Join Date: Sep 2005
Location: New Hampshire
Posts: 89
Default

As for years and money the entire launcher of the soyuz is only about $40 million, so for just a capsule that is altered for this purpose it would not be even that cost if purchased and reworked in the US for the intended purpose an by far less if they do it for anyone who wants it.

Why would it take years to make changes to what already exists.

It is an intersting image but would you post the link to the reference as well.
Reply With Quote
  #12 (permalink)  
Old 23-January-2007, 02:47 PM
SpaceNutNewmars SpaceNutNewmars is offline
Member
 
Join Date: Sep 2005
Location: New Hampshire
Posts: 89
Default

Yes I would agree that oceans would be an issue for a soyuz landing but not a forest unless you are concerned about starting a fire from the landing thrusters.

I would also agree that a life boat that stays in orbit needs some real staying capabilities but around 14 days still is not enough for rescue ships to be launched.

Only safe return is what is required.
Reply With Quote
  #13 (permalink)  
Old 23-January-2007, 03:29 PM
Nicolas's Avatar
Nicolas Nicolas is online now
Senior Member
 
Join Date: Sep 2004
Location: Belgium
Posts: 11,540
Default

Quote:
I think that a lifeboat must be safer than its spaceship
Why? It's just a last resort. If everything that should not fail, fails, you try the emergency plan. On sea, a lifeboat or liferaft is a worse place to be than its mother ship when functioning OK. In aircraft, landing via ejection seat and chute is worse than the regular plane landing.

I agree that the lifeboat should be safer than your damaged ship, otherwise it has no purpose.
__________________
To the regular visitor of internet bulletin boards it is clear that it's an excellent idea your parents get to choose your real name.
Reply With Quote
  #14 (permalink)  
Old 23-January-2007, 03:48 PM
joema joema is offline
Senior Member
 
Join Date: Dec 2002
Location: Nashville, TN
Posts: 881
Default

Keep in mind that by far the greatest risk is ascent. Many highly stressed systems such as main engines, SRBs, etc. must function with near perfection. Those are the most common failure cause, and the in-orbit rescue scenario doesn't help those.

If it's a major ascent malfunction such as Challenger on STS-51-L, obviously no rescue issues exist.

If it's a less-serious ascent malfunction such as STS-51-F (in-flight main engine failure), this will cause an abort: either RTLS, TAL, East Coast, to orbit, or possibly a bail out. In most of those, the ISS "safe haven" or rescue won't help.

BTW you can hear the actual flight controller audio from the 1985 STS-51-F "abort to orbit" here: http://www.shuttlesource.com/media/A...1F%20abort.mp3. Note had ISS even existed at that time, the shuttle couldn't have reached it.

The HST mission is actually safer from an ascent standpoint, as the trajectory has better abort options than the high-inclination ISS trajectory.

As already stated, here are more details on risk of the HST servicing mission:

http://www.spaceref.com/news/viewnews.html?id=927
Reply With Quote
  #15 (permalink)  
Old 23-January-2007, 04:02 PM
ToSeek's Avatar
ToSeek ToSeek is offline
Vulcan Moderator
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 24,328
Default

I've pulled the posts not directly related to Hubble servicing mission 4 from that thread to this one.
__________________
Everything I need to know I learned through Googling.
Reply With Quote
  #16 (permalink)  
Old 23-January-2007, 04:31 PM
djellison djellison is offline
Senior Member
 
Join Date: Oct 2006
Posts: 964
Default

Quote:
Originally Posted by gaetanomarano View Post
they realized it was too dangerous to be a lifeboat.
Again with the lies and miss-information - when will you ever stop!!! This is simply untrue. It was cancelled for budget reasons. Please please please stop posting things as facts when they are not. As with another thread which resulted in closure - you are intentionally swopping what you WISH were true with what IS true.

Here are some facts.

http://gop.science.house.gov/hearing...08/charter.htm
"On June 13, 2002, NASA notified Congress of the project’s cancellation citing their desire to pursue a multipurpose vehicle, which could include both crew transport and crew return capabilities as a more optimal use of NASA’s resources than pursuit of a single-purpose vehicle, such as the X-38 project."

http://en.wikipedia.org/wiki/Crew_Return_Vehicle
"On April 29, 2002, NASA announced that it was cancelling the CRV and X-38 programs, due to budget pressures associated with other elements of the ISS"

http://www.fas.org/spp/guide/usa/launch/x-38.htm
"On April 29, 2002, NASA announced the cancellation of the X-38 program due to budget pressures associated with the international space station"

PLEASE stop telling outright lies in this place forcing people to do the leg work to correct you to minimise your spread of missinformation.

Doug
Reply With Quote
  #17 (permalink)  
Old 23-January-2007, 07:57 PM
Extravoice's Avatar
Extravoice Extravoice is offline
Senior Member
 
Join Date: Jan 2004
Location: The Democratic People's Republic of New Jersey
Posts: 742
Default

Quote:
Originally Posted by gaetanomarano View Post
I think that a lifeboat must be safer than its spaceship...
Not quite true. A lifeboat has to be safer than a sinking ship (or appropriate space-based analog).

As my sailing instructor said:
Quote:
Don't abandon ship until you have to step up into the life raft.
__________________
"That's Not Blight. It's New Jersey" - The Wall Street Journal
Reply With Quote
  #18 (permalink)  
Old 24-January-2007, 01:56 AM
gaetanomarano's Avatar
gaetanomarano gaetanomarano is offline
Senior Member
 
Join Date: Apr 2006
Location: Italy
Posts: 1,597
Default

Quote:
Originally Posted by joema View Post
...the greatest risk is ascent...
that's clearly true, but the main problem of Shuttles in latest launches is (and can be again) a big (Columbia-like) damage due to an ET foam loss, then, we must consider both (Challenger-like and Columbia-like) risk as EQUAL (since, both, may result in a loss of crew)
.
__________________
gaetanomarano.it
ghostNASA.com
Reply With Quote