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Questions tagged [sub-orbital]

Questions involving trajectories that reach space but do not attain orbit.

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17 votes
2 answers
5k views

Is 678 km the new altitude record for a rocket shot "straight up" (vertical launch)?

The Space Daily April 10th Rocket Science item Europe's largest sounding rocket launched from Esrange says: MAXUS 9, Europe's largest sounding rocket for experiments in microgravity, successfully ...
uhoh's user avatar
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23 votes
2 answers
24k views

Could I build my own spaceship?

We all know that for most people access to space is currently pretty limited because space flight services are expensive, as they are in short supply. Suppose I wanted to bypass an expensive service ...
called2voyage's user avatar
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9 votes
1 answer
4k views

How to calculate apoapsis of sub-orbital trajectory?

I have made a RK4 simulator for launching a cannonball from a tower. Which has the state variables: Position vector r Velocity vector v Mass of planet M To simplify it, working in only 2 dimensions (...
grom's user avatar
  • 281
4 votes
2 answers
1k views

Could any existing gun reach the Karman Line?

There's a running Kickstarter to build a HARP-like gun that is multi-chambered and can fire a payload into "space". I don't see where this person's criteria for space is, except for the fact that it'...
AlanSE's user avatar
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2 votes
3 answers
452 views

Is there any kind of research on *sub*-orbital rendezvous-ing with a space tug outside the atmosphere?

The key difference with a plain old-fashioned orbital rendezvous would seem to be that there'd be limited time to only briefly match velocities and trajectories: Let's say a vehicle launched from ...
Prototypist's user avatar
26 votes
4 answers
7k views

How can Yuri Gagarin's Vostok 1 flight be considered to have been orbital, since he did not go all the way around Earth?

How can Yuri Gagarin's Vostok 1 flight be considered to have been orbital, since he did not go all the way around Earth? According to the Wikipedia article about Vostok 1, the launch site was near ...
David Ratti's user avatar
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21 votes
3 answers
6k views

Do you need a heat shield to enter the atmosphere from non-orbital speeds?

Let's say you launched a rocket straight up, not intending to go into orbit. At its apogee, the rocket is (say) 200 km above the earth: high enough (though certainly not fast enough) for LEO. Would ...
Joe's user avatar
  • 3,950
9 votes
3 answers
2k views

Would a point-to-point suborbital spaceflight have a "negative" perigee?

SpaceShip Three could be a point-to-point transportation method between two locations on Earth. The types of routes being seriously considered include: As of 2008, the SpaceShipThree concept ...
AlanSE's user avatar
  • 16.3k
7 votes
1 answer
3k 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 ...
SF.'s user avatar
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1 vote
3 answers
249 views

What kind of badge will tourists who performed a sub-orbital spaceflight receive?

I have read that tourists who performed a sub-orbital spaceflight with Virgin Galactic will receive some kind of astronaut badge. However, on the Wikipedia page on the United States Astronaut Badge, ...
Franck Dernoncourt's user avatar
15 votes
4 answers
2k views

What distinguishes a sounding rocket from a suborbital flight?

What are the differences between a sounding rocket and a suborbital flight? Sounding rockets have long been used for science purposes. Some of them have trajectories elliptic enough to do ...
LocalFluff's user avatar
14 votes
2 answers
7k views

Why does Blue Origin claim Virgin Galactic's spaceplane doesn’t have an escape system whereas Virgin Galactic's passengers are wearing parachutes?

https://twitter.com/blueorigin/status/1413521631717122059 (mirror): vs. https://space.stackexchange.com/a/54072/1111 by John Thomas: [Virgin Galactic's passengers] do appear to be wearing parachutes....
Franck Dernoncourt's user avatar
11 votes
1 answer
586 views

Did the crew of Soyuz MS-10 pass the Karman Line?

Just wondering if Nick Hague got his gold astronaut wings.
Organic Marble's user avatar
11 votes
2 answers
1k views

Would an ionocraft have better or worse performance in the upper atmosphere?

The ionocraft produces lift by accelerating ions in the air downward by the use of two meshes held at a large relative voltage difference. With a cursory look at the physical principle, it seems like ...
AlanSE's user avatar
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6 votes
1 answer
249 views

What use could be getting to space just for a bit?

I asked a question about reaching space using non-rocket aircrafts on aviation.se and I found out that it may be possible to reach the space for a short moment and then a normal aircraft designed to ...
user1306322's user avatar
6 votes
2 answers
208 views

What are the synergies between today's suborbital private businesses and space flight?

How, if at all, does suborbital flight benefit real space flight outside of the atmosphere? I mean suborbital flights as a business on its own, e.g. for tourism, not just suborbital testing of space ...
LocalFluff's user avatar
5 votes
3 answers
689 views

Lunar sub-orbital trajectories

How do you determine (what is the formula?) the delta-V for a sub-orbital 'hop' from one location on the Moon to another? Is it different from a typical orbital calculation?
MercuryPlus's user avatar
5 votes
1 answer
787 views

Do the passengers in Virgin Galactic's VSS Unity spacecraft have a parachute or some other way to escape the spacecraft if needs be?

Do the passengers in Virgin Galactic's VSS Unity spacecraft have a parachute or some other way to escape the spacecraft if needs be? In the VSS Enterprise crash that occurred on October 31, 2014, the ...
Franck Dernoncourt's user avatar
4 votes
2 answers
398 views

Why didn't Project Mercury advance to an orbital flight on their second mission?

Manned programs are noted for progressing through a series of flights. Early missions focus on basic hardware and simple tasks; as the technology becomes proven, the scope and duration of later ...
DrSheldon's user avatar
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2 votes
1 answer
549 views

Are Virgin Galactic tourists asked to take a 6 to 8G centrifuge test to qualify, and if so, what's the point?

Regarding sub-orbital spaceflights with Virgin Galactic, claims that: Allegedly some travelers were asked to take a 6 to 8G centrifuge test to qualify Is that true, ...
Franck Dernoncourt's user avatar
1 vote
3 answers
369 views

How many hours long is Earth's longest possible sub-orbital flight?

This comment below How long will last the Blue Origin New Shepard space flight? says (in part): The words "suborbital spaceflight" as the first words on Blue Origin's webpage for the New Shepard ...
uhoh's user avatar
  • 149k