Thats possible but I thought of a counter example. I have in my inbox two emails from some automated training system for health and safety courses which every employee has to complete. The idea is that the HSE manager has to show that every employee has completed the induction. Everybody gets hassled with emails until they follow a link and click through a set of induction pages. When they get to the end they are marked in a database. HSE obligations are satisfied and nothing is actually learnt.
How many people would feel comforted knowing that the resident assigned to them has practiced mainly in a virtual reality setting?
If you take a commercial flight it is quite possible that the first officer is flying that type of aircraft for the first time after training on simulators.
Thanks mostly to work done by NASA in the 1960s aircraft simulators offer a high fidelity training environment, but second life is one way in which the simulation of human interaction can be improved.
My nephew had an operation a couple of days ago. His family were quite upset that he was seen by three groups of students in the two hours before the procedure. Each group went through the same process. It was quite disturbing to them. Maybe by doing some training in a virtual environment the load on real patients can be reduced slightly.
I have long thought that the Shuttle could have been an evolution of Apollo. The idea would be to keep the command module as the flight deck of an orbiter. The orbiter is a winged version of the Apollo service module. During launch an escape tower would be attached to the command module. During launch and landing all members of the crew would be inside the command module. A hatch through the heat shield would give access to the mid deck in the service module.
This way it might even be possible to survive heat shield failure during aerobaking. The command module could separate and turn its heat shield forward before burn through.
Solid rocket motors, however, tend to "go to hell all of a sudden" in a rather spectacular way. "Sucks to be you" is really their only failure mode.
The challenger SRBs worked perfectly with a leaky O ring. Solid motors can't explode because their fuel only burns at the surface. Liquid fuel can turn into explosive if it becomes an aerosol. Solid rocket motors are about the simplest motor you can make. They are very reliable.
Okay I created a journal entry for this so people can use it to contact me for the time being.
Are you in Melbourne? The only other person who has expressed interest so far is in Brisbane. For me, sharing a pack of phones this way only makes sense if you are in the same city. There is the trust thing; its easier to deal with people you can meet face to face. Also shipping interstate would soak up a lot of the cost advantage of buying the pack of phones.
Right now I could take one or two phones. How many do you want? You can reply here or in my journal.
My sister is a bit of a raver... and she lives in the UK... and she just turned 30. Maybe I should give her a call, check to see if she is in the lockup. OTH I will just check facebook. I am sure there is something to set to say you have been locked up by the UK police because you went to a rave party.
Its like fighter jets which are designed to be unstable. That enables them to do amazing manoeuvres fast but you have to bail out if the flight control system fails.
You would have to subtract the money they were going to spend on a conventional drive line anyway. Better fuel economy may deliver operational benefits as well. More range requiring less infrastructure for refueling.
Its expensive to get water into orbit. It is much less expensive to get it directly into space so it falls straight back. You don't want it to be in orbit anyway. You just want a cloud which the debris goes through.
Its not cold up there. Its in a vacuum. Vacuum doesn't have a temperature.
But liquid water released into a vacuum will partly sublimate and partly freeze. Then the frozen water will slowly sublimate as photons from the sun hit it. If you can disperse the water fast enough in vacuum it should sublimate fast because of the huge surface area.
A different liquid (like Nitrogen) may do a better job.
I definitely agree with the general idea but I am concerned that not enough water would sublimate during a suborbital lob. Ideally you want your payload to be liquid or solid at launch to save on structure in the launcher. You could pack it with an explosive but that got me thinking about this coke bottle which was in the back of my car rolling from side to side for hours until I cracked the seal and got myself covered with sticky muck.
So maybe we need a mixture of CO2 and H2O at moderate pressure to get maximum dispersion. Of course lots of countries are showing off their sounding rockets right now. Maybe this is a good job for them.
I believe NASA had a plan to safely deorbit Skylab however the outer atmosphere expanded due to a strong sunspot cycle on the sun, resulting in more drag and fireworks over central Australia. IIRC another fragment was found this decade on a remote cattle station, but NASA weren't interested in getting it back.
Here in Melbourne there used to be battles on the street between tow truck drivers. It was absolute mayhem. Then the state government forced an allocation system on the tow trucks. Then the truck drivers figured out the algorithm it was using. Now its kind of an information war based on who can do a better job of gaming the system.
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Thats possible but I thought of a counter example. I have in my inbox two emails from some automated training system for health and safety courses which every employee has to complete. The idea is that the HSE manager has to show that every employee has completed the induction. Everybody gets hassled with emails until they follow a link and click through a set of induction pages. When they get to the end they are marked in a database. HSE obligations are satisfied and nothing is actually learnt.
How many people would feel comforted knowing that the resident assigned to them has practiced mainly in a virtual reality setting?
If you take a commercial flight it is quite possible that the first officer is flying that type of aircraft for the first time after training on simulators.
Thanks mostly to work done by NASA in the 1960s aircraft simulators offer a high fidelity training environment, but second life is one way in which the simulation of human interaction can be improved.
My nephew had an operation a couple of days ago. His family were quite upset that he was seen by three groups of students in the two hours before the procedure. Each group went through the same process. It was quite disturbing to them. Maybe by doing some training in a virtual environment the load on real patients can be reduced slightly.
Don't carry parachutes. Do a powered landing. It worked for Neil and Buzz.
I have long thought that the Shuttle could have been an evolution of Apollo. The idea would be to keep the command module as the flight deck of an orbiter. The orbiter is a winged version of the Apollo service module. During launch an escape tower would be attached to the command module. During launch and landing all members of the crew would be inside the command module. A hatch through the heat shield would give access to the mid deck in the service module.
This way it might even be possible to survive heat shield failure during aerobaking. The command module could separate and turn its heat shield forward before burn through.
Solid rocket motors, however, tend to "go to hell all of a sudden" in a rather spectacular way. "Sucks to be you" is really their only failure mode.
The challenger SRBs worked perfectly with a leaky O ring. Solid motors can't explode because their fuel only burns at the surface. Liquid fuel can turn into explosive if it becomes an aerosol. Solid rocket motors are about the simplest motor you can make. They are very reliable.
Okay I created a journal entry for this so people can use it to contact me for the time being.
Are you in Melbourne? The only other person who has expressed interest so far is in Brisbane. For me, sharing a pack of phones this way only makes sense if you are in the same city. There is the trust thing; its easier to deal with people you can meet face to face. Also shipping interstate would soak up a lot of the cost advantage of buying the pack of phones.
Right now I could take one or two phones. How many do you want? You can reply here or in my journal.
Thanks.
My sister is a bit of a raver ... and she lives in the UK ... and she just turned 30. Maybe I should give her a call, check to see if she is in the lockup. OTH I will just check facebook. I am sure there is something to set to say you have been locked up by the UK police because you went to a rave party.
Its like fighter jets which are designed to be unstable. That enables them to do amazing manoeuvres fast but you have to bail out if the flight control system fails.
Why don't you just use them, then leave a slab of beer on their doorstep as payment, rather than freaking them out.
In the first Mad Max movie, Max was a cop.
"circletimessquare" has a fairly narrow view of the world. A couple of hundred metres across, in fact.
Well that counts me out. Maybe its because the only people who can stand to deal with Theo are people who do exactly what they are told (by Theo).
Thats true. Low earth orbit is a low quality vacuum at a high temperature. Because of the low density photons from the sun can pump it up to very high temperatures. This study suggests 700 to 1100 kelvin at 240 km altitude.
use the motion of water past the hull and in the wake to generate electricity while the vessel is underway.
Ummm.....no I don't think so. Far better just to keep some of the power generated by the turbines.
You would have to subtract the money they were going to spend on a conventional drive line anyway. Better fuel economy may deliver operational benefits as well. More range requiring less infrastructure for refueling.
the ship use electric power for slow-speed maneuvers
But I think this may be a hybrid like a train.
Its expensive to get water into orbit. It is much less expensive to get it directly into space so it falls straight back. You don't want it to be in orbit anyway. You just want a cloud which the debris goes through.
Its not cold up there. Its in a vacuum. Vacuum doesn't have a temperature.
But liquid water released into a vacuum will partly sublimate and partly freeze. Then the frozen water will slowly sublimate as photons from the sun hit it. If you can disperse the water fast enough in vacuum it should sublimate fast because of the huge surface area.
A different liquid (like Nitrogen) may do a better job.
I definitely agree with the general idea but I am concerned that not enough water would sublimate during a suborbital lob. Ideally you want your payload to be liquid or solid at launch to save on structure in the launcher. You could pack it with an explosive but that got me thinking about this coke bottle which was in the back of my car rolling from side to side for hours until I cracked the seal and got myself covered with sticky muck.
So maybe we need a mixture of CO2 and H2O at moderate pressure to get maximum dispersion. Of course lots of countries are showing off their sounding rockets right now. Maybe this is a good job for them.
When the ISS deorbits we should be back in balance.
I hope there wasn't any fresh fruit left on Skylab by the last crew. If so there is going to be trouble.
Considering the number of meteorites recovered from the Nullabour I think we could be on to a good earner there.
I believe NASA had a plan to safely deorbit Skylab however the outer atmosphere expanded due to a strong sunspot cycle on the sun, resulting in more drag and fireworks over central Australia. IIRC another fragment was found this decade on a remote cattle station, but NASA weren't interested in getting it back.
Well NZ survived having the Apollo 13 LM almost dropped on them. Maybe they will get lucky.
Here in Melbourne there used to be battles on the street between tow truck drivers. It was absolute mayhem. Then the state government forced an allocation system on the tow trucks. Then the truck drivers figured out the algorithm it was using. Now its kind of an information war based on who can do a better job of gaming the system.