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New Scientific Discoveries, Part Drei


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#1
TrueNeutral

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The Large Hadron Collider Is Getting an Upgrade.

 
 


Remember when people thought it would end the world? lel.

 

Progress marches on.


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#2
rjshae

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'Surgery in a pill' a potential treatment for diabetes



#3
Gfted1

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Einstein Was Right! Scientists Confirm General Relativity Works With Distant Galaxy.



#4
rjshae

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http://www.businessi...thoughts-2018-7

 

Ya know, if you simultaneously zap them in the groin area, you'd get even better results.



#5
Gfted1

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New South African Telescope Releases Epic Image of the Galactic Center.


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#6
Guard Dog

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Article on feasibility of different orbital launch systems. https://www.realclea...t_to_space.html

 

I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought.

 

Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done.


Edited by Guard Dog, 16 July 2018 - 06:38 AM.

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#7
pmp10

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I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought.
 
Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done.

Reaching space is far more about total speed then starting height.
While there are some airborne launch systems it's just rarely worth the effort.

#8
Chilloutman

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Article on feasibility of different orbital launch systems. https://www.realclea...t_to_space.html

 

I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought.

 

Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done.

 


Edited by Chilloutman, 16 July 2018 - 09:45 AM.


#9
Guard Dog

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I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought.
 
Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done.

Reaching space is far more about total speed then starting height.
While there are some airborne launch systems it's just rarely worth the effort.

 

Actually you are incorrect. Escape velocity is inversely proportional to the r (distance from center of mass). Get farther away from the center of mass and you need less V. You also need less energy to overcome air resistance if you begin thrust higher in the atmosphere. Less V means less fuel. So the idea would be to use lighter than air lift to elevate and orbital vehicle to an optimum altitude and then begin thrusting from there.

 

The math just may not work. Otherwise I'm sure this would have been tried. But, in theory...



#10
pmp10

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I've always wondered why lighter-that-air lift systems haven't gotten more thought in designing orbital launch systems? The USAF (then) and the DHS (now) run a program called TARS (Tethered Aerostat Radar System) that uses semi rigid aerostats to lift a 20k kg payload. The max the Falcon 9 can lift is 54k kg. take away the fuel requirements to generate sufficient lift from sea level and it should be in the ballpark. Just a thought.
 
Edit: The TARS payload is actually 1k kg. The aerostats have a max theoretical lift of 5k kg. Multiple aerostats can be used. Again, theoretically. TARS does not need to do it but it can be done.

Reaching space is far more about total speed then starting height.
While there are some airborne launch systems it's just rarely worth the effort.

 

Actually you are incorrect. Escape velocity is inversely proportional to the r (distance from center of mass). Get farther away from the center of mass and you need less V. You also need less energy to overcome air resistance if you begin thrust higher in the atmosphere. Less V means less fuel. So the idea would be to use lighter than air lift to elevate and orbital vehicle to an optimum altitude and then begin thrusting from there.

 

The math just may not work. Otherwise I'm sure this would have been tried. But, in theory...

 

But air launches have been done with Pegasus.

And balloon launches are being developed.

But it's clearly for minor payloads, they can't scale the same way that rockets can.



#11
rjshae

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https://www.eso.org/...s/eso1824/?lang

 

Impressive. Most impressive.

 

eso1824c.jpg

 

Adaptive optics has come a long way.


Edited by rjshae, 19 July 2018 - 01:47 PM.

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