Questions tagged [cubesat]

Type of satellite in the shape of a cube 10 cm on each side. Popular with academics and amateurs with a focus on off-the-shelf components.

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Can I use Arduino for a cubesat? [duplicate]

we are building a cubesat and we have considered using an arduino as the computer. However I'm not sure if that is smart. I mean will the arduino get damaged in some sort? Is arduino suitable to do ...
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How does the Satellite Networked Open Ground Station operate? How is it used?

SatNOGS, the Satellite Networked Open Ground Station (mentioned in this answer) appears to be a distribution of independently maintained amateur DIY satellite receiving ground stations, linked by a ...
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Telecommunication CubeSats

Does anyone know of any company that is using CubeSats for telecommunication services or is this a new idea not yet implemented into the commercial arena?
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Initial condition for SGP4 in satellites without GPS, before the uplink of TLE data

I believe that the SGP4 model for orbit estimation for LEO satellites uses TLE data as initial condition. Some CubeSats chose to use up-link TLE data than installing GPS. My question is for the case ...
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How much do solar cells for space cost? [closed]

There is a lot of discussion about refueling rockets in deep space. This is to be managed by electrolysis of water powered by solar cells. This requires a lot of energy so one needs a lot of solar ...
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Will the Planetary Society's LightSail spacecraft's solar panels be articulated during each orbit?

The NYTimes article Review: ‘Bill Nye: Science Guy,’ a Portrait of a Fighter for Facts includes a link to the film's trailer on YouTube and a photo of Bill Nye with a model of a 3U cubesat attached to ...
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Determining altitude of a cubesat/nanosat

I've seen cubesat projects talk about the altitude of their satellite. Starting orbit is, presumably, known based on deployment conditions. But how does one track the altitude once it's been in ...
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Help with reaction wheel flywheel sizing

I am in the process of designing a reaction wheel to be used in a cubesat for my final year project. I have already chosen my motor ( Faulhaber 2610T006B ) , and am currently in the process of sizing ...
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Passive attitude stabilization with magnets - are there studies based on actual flight data?

Specifically with the small satellite and cubesat people, there is an rather 'old' idea around: Passive attitude stabilization based on permanent magnets. Schematic of the Earth magnetic field lines ...
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Is the utility PREDICT good enough for operational orbital prediction?

I'm looking for a cheap and cheerful, but ultimately working utility or library for tracking a cubesat and predicting link windows. I've been looking at using Orekit. I'm a student, so a lot of its ...
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What are the orbital mechanical consideration behind hand-launched nanosatellites from the ISS?

The NASA Spaceflight article Extended Russian EVA complete – conducts satellite deployments says: The first order of the day was for Ryazanskiy to head into the manual deployment of five ...
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889 views

Placement of Reaction Wheels in a nano satellite

The reaction wheels rotate the satellite only about the centre of mass.If the reaction wheels are not placed about the principal axes,Will the amount of torque produced be the same as when they are ...
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Mayak, a magnitude -10 (minus ten) satellite; how is the large, delicate reflector expanded?

The July 14, 2017 NASA Spaceflight article Soyuz 2-1A launches with Kanopus-V-IK and over 70 satellites says: Mayak is a three-unit CubeSat which was built by Tvoii Sektor Kosmosa – or “Your Sector ...
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How are remove before flight (RBF) pins made?

The CubeSat standard (CubeSat Design Specification Revision 13) requires that CubeSats have a remove before flight (RBF) pin that "shall cut all power to the satellite once it is inserted into the ...
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For a cubesat mission piggybacking on a Red Dragon, what are the tradeoffs for launch early and late in the launch window?

SpaceX will be launching two Red Dragons in 2020, one at the beginning of the launch window (July) and one at the end (September). For a CubeSat mission that would have to piggyback on one of the two ...
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261 views

Could a cubesat in a 500km SSO orbit effectively monitor earth?

If you were looking for, say, a 1m per pixel quality, what focal length/sensor size would you need? Would there be any off the shelf/commercial solutions?
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What are relevant missions for CubeSats? [closed]

My high school is planning to launch a CubeSat to the ISS, but we need a mission. A majority of students involved are interested in the engineering aspect of constructing it, and we don't know what it ...
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How do I calculate pointing and stability requirements for a platform (Cubesat, UAV) if we know sensor details (IFOV, Integration Time etc)?

My project involves developing a multi-mission modular satellite bus. I have couple of payloads under consideration and have the necessary sensor details. Based on that I am trying to figure the ...
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Why would the future Nanoracks airlock be built so that it must be removed from the ISS to deploy cubesats?

I am sure there are a number of safety and engineering considerations, as well as future integration and flexibility to consider, but I can't think of any so far. When I think of an airlock, I think ...
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Are 1U cubesats sufficiently detectable to get at least minimally usefully predictive public TLEs, updated regularly?

Satellite radar cross-sections is a complex function of satellite structure, design, materials, instantaneous attitude, (radar) frequency, polarization, and if has moving parts, configuration, just to ...
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CubeSat Orbit Determination

I'm thinking about the feasibility of making a CubeSat to test the EM drive thruster. Assuming the microwave electronics and resonant cavity could be scaled down to CubeSat size (5 watts, let's say), ...
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Current situation with CoCom regulations and GPS receivers for balloons and cubesats

I wanted to ask this at aviation SE because they are quite rules-and-regulations oriented there, but this question is not (really) about aviation. I'm trying to understand the current situation for ...
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Cubesat with 8 arcsecond pointing accuracy - is that typical, or exceptional?

I just read in Satnews Daily that: A 3U CubeSat funded by NASA and led by the University of Colorado’s Laboratory for Atmospheric and Space Physics, MinXSS requires precision pointing to carry out ...
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Detection of micrometeoroid impacts on the lunar surface using thermal imaging?

For a student project we are looking into the possibility of detecting micrometeoroid (micrometer-size) impacts on the lunar surface with cubesats equipped with a thermal imaging device. We have found ...
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Is TubeSat legit?

I've been looking into a personal satellite. The CubeSat seems interesting but is upwards of 10k for a satellite and extra for the launch. Not something in my price range. I found TubeSat by ...
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What is the sequence of the main spacecraft and CubeSats separation during Falcon 9 launch?

I'm curious about timeline and the procedures related to the spacecraft separation during Falcon 9 (and perhaps other rockets if such information is available) launch. Let's assume a mission with one ...
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Standard communications protocol for cubesats

Is there a well-accepted standard protocol for communicating between a cubesat and ground station? On what basis would I choose the protocol?
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How serious a problem can outgassing of satellites be?

As I was reading the Cubesat standard, one of requirements is low outgassing "to prevent contamination of other spacecraft". It also gives a link to a NASA-approved list of low outgassing materials. ...
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Cubesats in lunar orbit and beyond - how does communication work?

Somewhere I read that there are serious plans to send a cubesat into lunar orbit. A few years ago, the ISS was also offering a launch opportunity for such a mission. I guess that it was actually ...
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Based on which aspects should the on-board computer microcontroller of a CubeSat be chosen?

I think most of the CubeSats have an ARM Cortex-M microcontroller. Like, e.g. CubeComputer or NanoMind. Why are the Cortex-M the most frequently used microcontrollers for On-Board Computers (OBC)? ...
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Calculate communications window for LEO

I am designing a communication system for a small satellite. One of the major constraints is the duration of communication between the satellite and the ground station. I did link budget calculations ...
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Are cubesats deployed with fully discharged batteries? Even those on Sherpa?

I'm pretty sure that at least some large satellites are deployed with their batteries charged so that they can initialize themselves, get their own attitude and position, and possibly establish some ...
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What is the advantage of QPSK over FSK or ASK for satellite data transmission?

I am wondering what are the big advantages and disadvantages using QPSK, FSK,and ASK in satellite communication. In our project, which is in phase 3, are we supposed to work with QPSK modulation for ...
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How to build an antenna to receive VHF or UHF? [closed]

I am trying to build a cubesat using a Raspberry Pi. I am now figuring out how to communicate with it. As far as I know, I understand I will have to use VHF or UHF to do so. How do I decide on the ...
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Is the Pi really fit for outer space?

Recently, there has been growing interest in using Raspberry Pis in CubeSats. NASA is even in on the trend. But, considering that outer space is pretty harsh on electronics (i.e. radiation and cosmic ...
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Did the NASA PhoneSat actually try to use the GPS from the phone itself?

I was reading this article about NASA's PhoneSat Flight Demonstrations and came across this sentence. "To achieve this, NASA's PhoneSat design makes extensive use of commercial-off-the-shelf ...
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Cubesat communication services

Is there any known web-based API services that provide downlink/uplink testing facilities to some Cubesat? I don't want to have full hardware setup: antenna, sdr, auxiliary equipment. In same time, ...
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Can a cubesat in orbit be operated like a R/C airplane in real time?

I was thinking about the answers and comments I got to this question (Can a cubesat be used to qualify parts in space?) and came across one that said satellites can't be fixed once launched into orbit ...
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Cubesat dispenser operation for fleet deployment

What is the working concept for dispersal of a constellation of cubesats launched together? I understand that for the Flock satellites to be useful in providing frequent Earth observation revisit ...
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RTOS vs Linux against single event upsets

I am working on the on-board computer for a CubeSat. Our computer will be vulnerable to radiation, hence single event upsets, e.g. bit flips are likely to occur. Would a lighter, smaller OS like ...
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How to test the impact of radiation on cubesat's electronics?

Is there a difference between the effect of different ionizing wavelengths on electronics? Can a medical accelerator be used for simulation of conditions a cubesat will be exposed to? If not what ...
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Can cubesats be used to qualify parts for spaceflight more cheaply than ground testing?

I've been researching what drives the cost of spacecraft, to see why many spacecraft still use very antiquated electronics and power systems developed in the 1980's instead of up to date electronics ...
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Cubesat Orbit calculation [closed]

I am trying to calculate the orbit parameters for a cubesat (Duration, eclipse time and sun time) can someone help please
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What is a feeder uplink/downlink?

I'm trying to understand the terminology used in the specifications of several satellite systems, such as those outlined on pages 9-11 here. I'm guessing a mobile uplink/downlink is RF uplink and ...
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How is the ISS helpful for launching cubesats and minisats?

The ISS space station orbits at an inclination of about 50 degrees. That's in between polar orbit, which would be useful for Earth observations, and the ecliptic which would be useful for synchronous ...
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Has any CubeSat flown with an active propulsion system?

CubeSats are small, but so are some propulsion systems (cold gas thrusters, for instance, really aren't too complex and can be low volume/mass). Has any CubeSat actually flown with its own propulsion ...
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How was the airlock for the ISS' minisat launchers installed?

I assume that the crew in ISS can manipulate the minisats manually before they are launched, so they must be launched through some kind of airlock. Was this airlock designed for this purpose, or do ...
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Why are two frames of reference needed for attitude determination?

I am trying to understand the global workings of attitude determination, specifically in space, but I don't understand why two reference frames are needed to establish that? Let's say you have a ...
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Documentation and testing for a CubeSat launch?

If I had a CubeSat sitting on my desk ready to go today, what documentation and testing would I need to do before I could get it launched? Presumably the launch provider won’t just launch anything I ...