Questions tagged [software]
Questions regarding computer programs used in space exploration.
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Are there Starlink train-finding websites?
In Astronomy SE Line of lights moving in a straight line, with a few following is the canonical close as duplicate target for questions about the likely seeing of recently deployed Starlinks that move ...
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1answer
223 views
Tools for low-thrust trajectory optimization
I'm performing a transfer between Near-Earth orbits considering J2 perturbation with the low-thrust engine. Orbital parameters:
...
6
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1answer
180 views
Taking custom software or hardware to the ISS
Before departing to the ISS, astronauts are allowed to pack some personal objects to be taken with them (see other question about packing).
What if an astronaut had some self-written software (for ...
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105 views
What operating systems do Chinese satellites use?
Which operating systems are most frequently used by China for satellites?
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1answer
212 views
What is a “flight string”?
This answer explains what software powers the Falcon 9 launch vehicle.
The flight software is written in C/C++ and runs in the x86 environment. For each calculation/decision, the "flight string&...
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1answer
108 views
STK - Create a scanning sensor
I need a tool to create a scanning-type sensor. On STK you can only select a spinning-type sensor. I found one guy who made this sensor on STK but I don't know how.
The information below the linked ...
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127 views
What programs did David Scott add to the Apollo computer for Apollo 15?
David Scott was the commander for Apollo 15. He was also a main point of contact between MIT, who developed the Apollo flight computer, and the astronauts who were going to use that computer. ...
2
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1answer
97 views
How are satellite operating modes implemented?
It is pretty simple to find documentation about satellite operating modes behaviour when trying to develop satellite onboard software (example of safe mode behaviour on wikipedia, or on researchgate), ...
2
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1answer
85 views
Challenges in using linux based COTS for Cubesat mission payloads
Most of the questions related to using linux is cubesat/space missions is for the flight computer. I understand that a RTOS is preferred over a full blown linux for a flight computer. However I am ...
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302 views
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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61 views
How was DSCOVR “fixed” so that sufficiently dynamic attitude determination is gotten from star cameras?
The following from Space News indicate that a laser gyroscope failed and that software changes were developed and uploaded to the spacecraft bringing it back on line again recently:
Software fix ...
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104 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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1answer
65 views
How does one use the Surveillance Fence feature in keeptrack.space?
keeptrack.space was mentioned in What would be a “big picture” understanding of how the orbits of Earth satellites are monitored? but I haven't visited the site since.
Running across this again today ...
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272 views
Interplanetary spacecraft flight operating system and programming language
Which programming languages and operating systems are mostly used for interplanetary satellites (such as a mission to the moon)?
To my knowledge, I know some LEO CubeSats use C programming language ...
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0answers
96 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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87 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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2answers
404 views
Which CI/CD system do/would space companies like SpaceX use for continuous integration in their devops practice? [closed]
I wonder whether there are, or are recognizable in near future, industry specifics for CI/CD solutions in a space engineering company like SpaceX, compared to other companies where mass manufacturing ...
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3answers
286 views
Why are the poles of the Moon in Google Earth so different from other regions?
I am well aware of the fact that the poles of the Moon are different from the rest of the regions in many ways. But in Google Earth's Moon, the poles are so different from what we would see if we were ...
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1answer
83 views
Software projects for space systems [closed]
I am a software engineer with a strong grasp of python. I want to branch out and start working for space startups after I read there was a shortage of good software engineers working in the burgeoning ...
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2answers
218 views
STK Astrogator Earth Flyby
TLDR: How do you set up an EEV maneuver, specifically, how do you go from an earth orbit to a heliocentric orbit with a periapsis within Venus’s orbit in astrogator? I know the theory but astrogator ...
3
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1answer
545 views
Samples of old guidance software using computational resources on Earth implementing navigation in space
Answers to Given small computational resources how navigation was implemented ( Not Samples of old guidance software) are excellent. I was stunned to see an article mentioning 65KB was used to ...
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6answers
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Given small computational resources, how was navigation implemented? (Not samples of old guidance software)
Update: I really wanted to know how spacecraft navigation (not guidance) computers worked, given small computational resources. I have asked in another question and edited this question to limit ...
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2answers
493 views
How has NASA's mission operations software architecture evolved?
As many of us know, the mission operations software of NASA has changed significantly over time. Needs have changed with the space program and mission operations software has adapted to keep up with ...
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1answer
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Does NASA use any type of office/groupware software and which is that?
CERN for example uses MALT. What does NASA use where you need standard functions?
https://malt.web.cern.ch/malt/global/malt-table/
Specifically with standard functions I mean what you would use in ...
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3answers
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Does the Voyager team use a wrapper (Fortran(77?) to Python) to transmit current commands?
I assume that the vast majority of the people who created the software for these missions are now retired (the "space pensioners" of the Voyager mission).
Here's a very good summary of the current ...
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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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List of notable materials from 2017-2019 of software dev in the space industry
I was looking for relevant books about the development of software in space tech.
I've had a hard time looking for recent information about software so I'll appreciate any tip -like key words, or ...
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What was the nature of the known bugs in the Space Shuttle software?
It's been claimed or suggested in other posts that during the entire history of the Space Shuttle, only one software bug actually survived the development and review process, making it to flight. ...
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1answer
275 views
What language is the Russian segment ISS software written in?
I have heard that the ISS uses a Russian coding language for some of the systems and subsystems on the Russian segment of the ISS. What is that coding language?
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6answers
22k views
What makes Ada the language of choice for the ISS's safety-critical systems?
We have it on good authority that Ada is widely used for "safety critical software" on at least the US side of the International Space Station.
Of all the possible languages to choose from, what are ...
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2answers
14k views
What language is software running on the ISS written in?
What is the coding language used for the software used on the ISS? Is it NASA's own coding language, or is it something like C, or C#, maybe Haskell?
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3answers
586 views
What are the contributions of NASA in software engineering?
What are the contributions of NASA in the advancement of software engineering? What are the relevant standards that they have to comply with? I'm interested in avionics basically, but I don't find any ...
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1answer
147 views
What are the top most used satellite control system, flight dynamics solution at the moment ? Approx costs?
I am looking for a list of top most used satellite control systems, flight dynamics solutions by space agencies, private companies etc. the moment? How much do they cost approx for use by 1 person? Is ...
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470 views
Have any probes / spacecraft used GPU hardware? If so, what for?
I was reading this question about CPU's used in space and that got me thinking about the practical applications of GPUs for space-bound vessels. I'm wondering if we ever sent a radiation-hardened GPU ...
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1answer
224 views
Does Mars Reconnaissance Orbiter require “reprogramming” when handling communications for newer spacecraft or landers?
While I was going through the question What happens to Insight's parachute? I learned of the role of the Mars Reconnaissance Orbiter to provide reliable communication between other Mars spacecraft and/...
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123 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 ...
3
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1answer
117 views
Does a gravity model exist for satellites in LEO?
I'm wondering if there's a C-based (or similar language) program that will output the gravitational strength given input geodetic LEO coordinates (which I can convert to ECI etc. if needed). Ideally ...
5
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2answers
112 views
Does a solar geometry library exist for satellites in LEO?
I'm looking for a solar geometry library built for a cubesat in LEO. In my research so far, I've discovered the MINES Paris-Tech Solar Geometry 2 library (http://www.oie.mines-paristech.fr/...
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3answers
331 views
Has in-flight software changes ever involved a change of programming language?
Computer software is arguably the only component of an unmanned spacecraft that can be changed once the mission is already underway. Many spacecraft are now designed to accept new programs through ...
4
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1answer
344 views
What type of software is used to make radiation shielding simulations for use in Space or Mars?
Hopefully this is relevant to the board and doesn't get deleted. Quick background: In Thailand. Grad student, mechanical engineering, with very limited knowledge regarding nuclear or space radiations. ...
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1answer
717 views
How open is NASA's “open source” GMAT software?
In answers and comments to What does it mean when a software is called open-source for US-release only? I found out that when NASA uses the term "open source" it does not mean open to everyone! ...
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384 views
Design Software Recommendations
I'm currently working on "base stones" of future cubesat mission and I'm doing some research for designing or simulation of cubesats. Software that I found on google costs enormous price and I'm ...
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0answers
173 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 ...
4
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1answer
528 views
Low Earth orbit propagation in GMAT
I'm propagating a Low Earth orbit using GMAT.
I 'm trying to make the propagation realistic, considering the zonal harmonics, Sun, Moon, Jupiter, Venus perturbations, tidal forces and solar ...
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1answer
314 views
Difficulty trying to use the SPK file ast343de430.bsp
I'm looking for a NAIF SPK file (these typically end in .bsp) for a bunch of asteroids in the J2000 reference frame. I found ...
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2answers
3k views
Transitioning into space software engineering
I have been a Web Developer in London since I graduated in 2012. My skills reside mainly in the Microsoft stack (MSSQL, .NET, C#, MVC and all the front-end stuff).
I have always been very interested ...
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1answer
586 views
Are software updates to satellites or in general space craft commonplace during scientific missions?
History provides enough examples of failed missions due to software failure.
If the mission system is still physically intact (ISS best example but very close to Earth making the examole maybe less ...
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2answers
1k views
What does the software quality process for NASA's SLS look like?
What does the software quality process for NASA's SLS look like? What are the relevant standards that they have to comply to? Do they have to show that they are CMMI compliant, for example? I'm ...
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248 views
Info on NASA's NOS3 software and the rest of the suite used by STF-1
THE STF-1 cubesat project, in cooperation with NASA, has developed a whole suite of simulation software for small satellites.
Info here: http://stf1.com/simulation.php
And here: https://www.nasa....
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1answer
702 views
What does it mean when a software is called open-source for US-release only?
I saw this answer about MarsGRAM, and when I clicked on the NASA software link to read about it I saw at the bottom of the page a blurb for EarthGRAM 2010, an atmospheric model for Earth with likely ...
