All Questions
Tagged with technologyrockets
9 questions
2votes
1answer
224views
Has there ever been a fully-reusable big-dumb-booster design proposed?
I know of fully expendable Big Dumb Boosters, as well as "smart" reuse in systems like NEXUS (all versions) and their contemporaries, what I'm trying to figure out (after hours of sorting ...
- 1,195
4votes
2answers
1kviews
What is the maximum practical deltaV obtainable from a chemical rocket launched from earths surface?
What is the maximum practical deltaV obtainable from a chemical rocket launched from earths surface? Not an exact number as there are too many variables but an approximate maximum assuming a 10,000kg,...
- 10.9k
4votes
3answers
4kviews
Why doesn't the USA use structurally stronger rockets for the more important launches?
Russia uses the R-7 ICBM-derived Soyuz launch vehicle for most of its space launches. The advantage of it is that there's no concern on what the weather is like on launch day and Soyuz launches almost ...
user35272
2votes
3answers
1kviews
Stability of rocket during flight; why does the lift force change direction when the center of pressure moves?
I am currently learning about fins and the role they play in the stability of a rocket during flight. I came across a relatively minor problem. Here is one of the resources I'm looking at: http://www....
- 85
5votes
1answer
203views
Why NASA hosts many of their reports public, while ESA/JAXA/ Roscomos doesn't?
There are abundant resources available online in NTRS about the hard earned knowledge of rocket science. But NASA makes them available for free for all. But there does exist some classified ...
- 4,499
29votes
1answer
6kviews
Why are spaceship capsules frustum shaped?
Why do spaceships have a frustum (portion of a cone) shape like e.g. the pressure capsule of the SpaceX Dragon on the image below? I think there is some engineering stuff behind ...
- 393
22votes
3answers
2kviews
Were decommissioned Cold War missiles repurposed for peaceful spaceflight?
Those formerly on either side of the Iron Curtain can now admit that the Cold War had its plusses and minuses. The key minus, of course, is that the United States and the Soviet Union constructed ...
- 3,257
13votes
3answers
6kviews
On a Super-Earth 1.5x the volume and mass of Earth, would our rocket technology allow us to reach orbit? [duplicate]
To try and make parameters clear, can we say we are talking about 50% 'more Earth'? As in, Earth, but 1.5 times as big and heavy? And let us include the atmosphere. If there is 50% more of it by ...
- 21.6k
22votes
3answers
8kviews
Could 3D printing be used to achieve perfect grain geometry of solid and hybrid rocket motors?
Solid cores, either for solid-fueled of hybrid rocket motors, use various propellant grain geometries to achieve thrust curve needed. For example, some of these could look like: &...
- 76.6k
