Questions tagged [atmospheric-drag]

Questions regarding atmospheric drag which includes the resistance offerd by a moving object in fluid

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6
votes
2answers
4k views

Deorbit time for satellites in LEO

According to Systems and methods for a self-deploying vehicle drag device (US 8616496 B2) patent's background of the invention: The United States Federal Communications Commission (FCC) requires ...
5
votes
1answer
189 views

Is the streamlining of a launch vehicle worth the additional fuel required to carry it beyond the Karman line?

Wikipedia writes to say Low Earth Orbit spans the altitude from 160KM above Earth through 2000KM above Earth. Launch vehicles appear to be highly stream-lined. Yet only the first few score KM (as far ...
13
votes
3answers
903 views

Does it snow in LEO?

How does water spray behave in Low Earth Orbit (LEO), from the side exposed to the Sun to the side in Earth's shadow? Could it be used as means of augmenting atmospheric drag and deorbiting defunct ...
4
votes
1answer
2k views

Delta-v from atmospheric drag

If there was a satellite that had a periapsis at 250km, approximately how much delta-v would it take during each orbit to offset the atmospheric drag? Would it be different depending on apoapsis? The ...
5
votes
1answer
506 views

Moving object in space

I am a learner in this field. I have a doubt after watching movie "Gravity". In that movie, an explosion occurs in a spacecraft and the particles of that vehicle move so faster than a bullet, (as ...
3
votes
1answer
596 views

Why did HARP make projectiles in the rocket shape?

HARP fired projectiles from a gun into suborbital trajectories. This type of projectile carried a scientific payload, but did not have any reaction engines (although later proposals did). Their ...
21
votes
3answers
14k views

How does skipping off the atmosphere work?

I searched the web and found a couple entries on Wikipedia (Skip reentry & Atmospheric entry) that kind brush at the topic. The article on Stone skipping has some science and physics involved (...
12
votes
1answer
229 views

Are there any proposals to vacuum up gases in orbit for use as propellant?

Space stations like the ISS orbit at an elevation that puts them squarely in the Thermosphere, and while this has extremely rarefied gas (which is probably more accurately a plasma at many times), it ...
5
votes
0answers
120 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 ...
9
votes
1answer
263 views

What is the closest to Earth you can expect lift from a solar sail?

There is no doubt that a solar sail can move you around the Solar system, and even interstellar, if you're not in a hurry. But it will not get you off the planet. Assuming your ship/satellite is in ...
37
votes
4answers
15k views

Effect of atmospheric drag on rocket launches and benefits of high altitude launch sites

What is the approximate influence of atmospheric drag on the cost of rocket launches? Is it beneficial to have launch sites located at higher altitudes? Cape Canaveral is at sea level, but I've ...

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