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Questions tagged [flight-control]

Systems and software used to control a space craft's trajectory.

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8
votes
4answers
3k views

Why does spinning help stabilisation?

I don't really understand why do we use spin stabilisation for rocket launches? If I understand correctly, the idea is to make the rocket spin really fast so that any asymmetry in the thrust/...
5
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3answers
1k views

Is aerodynamic lift ever useful in rocket flight?

When a rocket is traveling through an atmosphere, the component of the aerodynamic force in the direction of motion is called drag, and the component perpendicular to that is called lift. Usually a ...
13
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3answers
2k views

Does this kill vehicle contains momentum wheels? Watch how it moves!

This comment below this answer about 'spacecraft' or at least 'craft' that can maneuver near the surface of low gravity bodies links to this video about Lockeed Martin's Multiple Kill Vehicle. If I ...
2
votes
2answers
555 views

Rocket drag and lift based on flight direction - in which frame of reference?

Drag is aerodynamic force component parallel to the direction of motion. Lift is aerodynamic force component perpendicular to the direction of motion. Direction of motion with respect to what? 1) ...
4
votes
4answers
338 views

Using what technology one can keep a spacecraft truly non rotating

Inspired by the question I thought maybe a photon thruster can be used for precisely giving thrust to maintain spacecraft attitude. But soon I realized that for high precision attitude control, one ...
7
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0answers
509 views

How is retropropulsion by the Falcon 9 first stage being used to design retropropulsion entry on Mars?

Much has been made of how the reentry burns of Falcon 9 first stages occur at an altitude where the atmosphere is similar in density to the atmosphere of Mars, and so they demonstrate that supersonic ...
3
votes
1answer
412 views

What exactly is rhumb-line control in the context of a launch trajectory?

The conference paper SS-520 Nano satellite launcher and its flight result SSC18-IX-03 from the 32nd Annual AIAA/USU Conference on Small Satellites linked in this answer describes the use of rhumb-line ...
8
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1answer
868 views

Machine Learning and Classical Navigation, Guidance and Control in Space Exploration

Due to the increasing availability of large quantities of data and computational power, machine learning (ML) is providing increasingly better results in various fields. Much research has been done on ...
11
votes
5answers
728 views

Is it possible to navigate space travel with no computer?

From launch to land could a person travel in space with only mechanical devices like a sextant? With enough experience what would be the minimum devices needed? Which vehicle currently would be easier ...
17
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4answers
2k views

How were the pilots of the space shuttle able to operate the rudder after time in space?

I've just watched this video showing three astronauts who've returned from space. At around the 5:46 mark in the video we can see astronaut Chris Hadfield being carried out of the Soyuz capsule. I've ...
4
votes
1answer
144 views

Where are these historical IBM + Apollo related locations within NASA? What do these computers do?

In the Fortune Magazine video IBM's Moonshot: Past and Future with the notes BM’s John Kelly reflects on Apollo 11’s historic mission and looks forward to what future technology will accomplish. ...
4
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2answers
134 views

Can a spacecraft use an accelerometer to determine its orientation?

I know that almost every spacecraft uses a gyroscope to determine its orientation, but I don't know if an accelerometer could also be used in addition to a magnetometer to calculate it. I have been ...
1
vote
1answer
68 views

How do small, spin stabilized launchers follow a rhumb line?

This concise answer to What exactly is rhumb-line control in the context of a launch trajectory? explains the concept in the context of the SS-520 nanosatellite launch vehicle (which "doesn't exist"). ...