Linked Questions

5
votes
2answers
550 views

Why launch from sea level and not Denver? [duplicate]

Why do we launch space satellites and vehicles from sea level and not from a higher locale like Denver? Is saving a mile not more fuel efficient? Gravity is less the further away from center or is ...
4
votes
1answer
270 views

Launch from the top of high places [duplicate]

Would launching space ships at the top of high places (like buildings or mountains) would have significant effect? What would be the height where launching would be less energy-/fuel-consuming than ...
4
votes
1answer
180 views

Why rockets are launched from sea level and not highlands? [duplicate]

This Is a question that was buzzing me, but since every meter of altitude a rocket consume an absurd amount of fuel, wouldn't be more efficent launching rocket from higher altitudes? Thinking to ...
4
votes
0answers
166 views

Launch altitude and fuel cost [duplicate]

In this question, higher altitude launches are discussed, but no one seems to address fuel consumption. Let's take the Saturn V for example. A Saturn V rocket on the launch pad weighed approximately ...
0
votes
0answers
168 views

What is the effect of launching from higher altitude on fuel burn and rocket performance? [duplicate]

There are many sites around the world apart from USA, that have such great locations to launch from. Saving hundreds of thousands of dollars in fuel costs. Can someone assist me with a model that ...
5
votes
0answers
119 views

How much cheaper would a high level launch be from a sea level launch? [duplicate]

What is the difference in delta-V required for a launch from the highest natural point on Earth (about 8,800 m or 29,000 ft) as opposed to a sea level launch? Assuming a completely ground based ...
11
votes
3answers
481 views

Have all spacecraft on record been launched from land?

Water is a little buoyant which may be part of the reason a lot of commerce happens on the waves. How much of a difference in terms of fuel would it make if the craft were launched from a water-body?...
5
votes
3answers
476 views

Shapes of rockets on the Earth with no atmosphere

What would rockets look like if the Earth had no atmosphere? How much easier would it be to launch satellites, and how much harder will it be to launch returnable manned missions?
4
votes
2answers
1k views

How much thrust to launch a regulation size FIFA soccerball into orbit

How much thrust is necessary to launch a regulation size FIFA soccer ball into orbit around the Earth? Let us assume a size 5 which weighs between 420g and 450g. Remember, we will need thrust to ...
7
votes
1answer
3k views

Where is the optimal location to launch payloads to outer space?

Imaginary scenario: The US, Russia, China, Europe, India, and all the private space companies in between combine resources for a sustained space exploration program beyond Earth. They can choose any ...
3
votes
1answer
2k views

How much fuel would be required to send a 300g satellite to space using Rockoon?

How much fuel would be required to send a 300g satellite to space using a rockoon that can travel to a height of 32 km, and then send the satellite to a inclination of 28, Apogee: 350 km, Perigee: 280 ...
-3
votes
2answers
382 views

Wouldn't it be better to leave Earth less dramatically? [closed]

I'm not claiming this concept outlined below as a massively original idea. But perhaps the idea of "gentle" access to space is unusual? What I'm talking about is a High-Altitude Platform (HAP), kept ...
5
votes
1answer
749 views

What is the delta-V equivalent to cross the Kármán line in vertical (suborbital) flight?

...or, well, for a typical example - how much delta-V does New Shepard carry? For orbital launches, there's the ~1km/s estimate to overcome drag and gravitational losses on orbital launches; 8km/s of ...
2
votes
3answers
532 views

Could pull from a space elevator be used to assist a rocket launch?

Well, more specifically, using a counterweight like you'd find in a non-space elevator to give the rocket a little acceleration before firing up and spending all that fuel-to-lift-the-fuel-to-lift-the-...
2
votes
2answers
301 views

Benefits of hydrogen cannon for first stage launch at sea level or 20,000 feet

I found three videos (2009 Google Tech Talk, 2011 International Mars Society Convention, 2011 Quicklaunch Inc.) from Dr. John Hunter about using a hydrogen gas cannon to launch payloads into space (or ...

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