Linked Questions
16 questions linked to/from Why is FAI considering lowering the Karman Line to 80km?
24
votes
4
answers
2k
views
Karman line analog on other celestial bodies
Is there a common definition of where the space begins on other planets (and other celestial bodies)? An equivalent of the Karman line.
How far one should go from the martian surface to get to the ...
user54
4
votes
3
answers
1k
views
When do aircraft become solarcraft?
Any body travelling through particles undergoes drag. Any body able to generate lift (for instance spheres cannot generate lift) can generate lift if it undergoes drag.
First by assuming one body in ...
- 4,228
11
votes
1
answer
581
views
Did the crew of Soyuz MS-10 pass the Karman Line?
Just wondering if Nick Hague got his gold astronaut wings.
- 178k
11
votes
1
answer
743
views
What did Karman's original "Karman line" calculations look like?
Looking for the atmospheric parameters (density for example) and vehicle parameters (CL for example) as well as formulae that were used in the original calculation. Primary sources strongly preferred,...
- 178k
17
votes
1
answer
1k
views
Have spacecraft ever dipped below the Karman line and then safely continued spaceflight?
The item in Science Alert's A Harvard Astrophysicist Says Outer Space Is Actually Closer Than We Think (see also Science; Outer space may have just gotten a bit closer) talks about the recent Acta ...
- 148k
2
votes
1
answer
755
views
Temperature and Pressure Gradient across Kármán line
Has there been any experimental measurement of the temperature and pressure gradient across the Kármán line? How much time did it take for a space shuttle (such as Atlantis) to cross it, and whether ...
1
vote
2
answers
293
views
Does Jonathan McDowell access U.S. military tracking network data? If so, how? Is a security clearance involved? (Can I too?)
NPR's news item and audio podcast New Chinese Space Plane Landed At Mysterious Air Base, Evidence Suggests draws heavily from information and quotes from noted astronomer with the Harvard-Smithsonian ...
- 148k
7
votes
1
answer
317
views
With a 10% increase in Earth's mass, would the Karman line move up or down, and by how much?
This is an exercise to better understand the basic physics and math behind scale height and the Karman line. It was inspired by this answer to Why is FAI considering lowering the Karman Line to 80km? (...
- 148k
3
votes
1
answer
307
views
When is/will be the symposium to revisit the Karman line and consider the "McDowell line"?
In the January 16, 2019 Sixty Symbols video Where is the edge of space? Dr Meghan Gray from the University of Nottingham discusses Jonathan McDowell's paper The edge of space: Revisiting the Karman ...
- 148k
5
votes
1
answer
275
views
What factors would contribute to a spacecraft's ability to maintain a very low orbit (VLEO) or at least orbits with very low perigees?
I asked What does account for a high coffin corner of a plane? in Aviation SE. Now I wonder what factors would contribute to a spacecraft being able to maintain low circular orbits (e.g. within 200 km ...
user43968
5
votes
1
answer
179
views
Is there a standard 'low orbit' for other solar system bodies?
Is there a standard or convention for what 'counts' as a low orbit for other solar system bodies?
I'm currently writing code for computing arbitrary Hohmann/ patched conics transfers, and I am looking ...
- 6,418
5
votes
1
answer
270
views
Are satellites whose orbits go below 100 km perigee considered having multiple spaceflights?
The International Aviation Federation (FAI) considers the space border at 100 km (330,000 ft) above sea level. So if an orbiting body goes below that altitude and continues its orbit without ...
- 53
4
votes
1
answer
136
views
Was there a spacecraft that was clearly the first to be put in a polar orbit?
Was there a first spacecraft put in a polar orbit?
It might not be clear if it's too hard to say what high inclination orbit is or is not polar, for example if 91 satellites were launched in 0, 1, 2.....
- 148k
-4
votes
1
answer
149
views
Is it correct to apply the vis-viva equation to an airplane that flies in a straight line at the Kármán line?
The vis-viva equation models the motion of an orbiting body and it applies when the only force acting on the body is it's own weight.
So is it correct to apply this equation to an airplane that ...
- 7,493
1
vote
1
answer
179
views
Does the recently-tested Russian hypersonic craft enter space?
I am not going to invoke the K-word in this question!
Hypersonic long-range craft have to fly pretty high to travel circa mach 20. Would they need to travel into space to do so efficiently?
- 148k