Questions tagged [software]

Questions regarding computer programs used in space exploration.

14 questions with no upvoted or accepted answers
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Why is the RTEMS Real-Time Operating System often used in European space industry?

I was wondering recently about RTEMS. Why is this Real-Time Operating System (RTOS) widely use in the European space industry among other suitable alternatives like freeRTOS or VxWorks? Is this RTOS ...
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96 views

What was the first unplanned “over-the-air” software update of a spacecraft?

From time-to-time spacecraft have had to be rebooted, in one case Voyager 2 mutinied and had to be reprogrammed and in another Opportunity had it's memory "hacked". As far as I know, deep space ...
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140 views

Software for orbital sketches

I am looking for recommendations on software that can create orbit sketches such as the image below. Adding an informative sketch to an article can help readers better understand the idea. I am ...
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181 views

Economical Suborbital Trajectory Analysis Software

Got my two LR-101's, found some reasonably sized surplus LOX/RP-1 and pressurization tanks, found plans for fabricating valves, designed my vehicle, made an excel based back of the envelope sizing ...
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Aerospike calculator software doesn't seem to altitude-compensate - am I misunderstanding aerospikes?

I'm using mvernacc's Aerospike Nozzle Design GUI, which is supposed to be able to design and predict the performance of aerospike rocket engines. The workings of the software are apparently based on ...
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109 views

What operating systems do Chinese satellites use?

Which operating systems are most frequently used by China for satellites?
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105 views

Are there any known space craft with software at risk from Y2K scenarios?

The Y2K scenario occurs, usually, with incremental counters (such as counting the seconds that pass with time). When you have a situation in which an incremental counter will infinitely increase, you ...
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104 views

Why does SpaceIL's Beresheet landing graphics show m\s instead of m/s?

I just noticed that the software displayed in the video of the landing had the velocity and acceleration units with a backslash (m\s) instead of the usual convention of a forward slash (m/s). Out of ...
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176 views

What do these three historical IBM staff at NASA insignias designate?

The question Where are these historical IBM + Apollo related locations within NASA? What do these computers do? shows four images. Three of them show different IBM insignias on shirts of IBM staff. ...
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186 views

Software (besides Ltool) to simulate CR3BP (three body) problems?

Are there any other softwares for CR3BP besides Ltool? As I've learnt here Ltool is not generally available to the public. I would like to simulate three body orbits within the standard circular ...
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53 views

How much space could be freed up on New Horizons “once the spacecraft's flyby software is no longer needed”?

A comment below New Horizons current mission links to the Johns Hopkins University Applied Physics Laboratory page 2019 Onward which includes the following: It is possible that another flyby target ...
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“New Horizons' capabilities augmented by uploading new observing and onboard data-reduction software.” How? What augmentations are begin considered?

A comment below New Horizons current mission links to the Johns Hopkins University Applied Physics Laboratory page 2019 Onward which includes the following: It is possible that another flyby target ...
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111 views

Simulation of Rocket chambers like in Hall Effect Thrusters

I started learning Solidworks in hopes of being able to run simulation to study rocket chambers. Currently, I am studying the flow of plasma and its interaction with the magnetic field, but ...
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GMAT compilation does not generate gui

I am compiling GMAT 2020a on opensuse linux from source code downloaded from sourceforge. I have gotten the compilation completed. Ran ok, except the /bin ...