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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2answers
163 views

How can I calculate if a satellite is currently in sunlight or eclipse using pyEphem or Skyfield (preferred)?

I'd like to add this to some existing python scripts to model cubesat battery life and payload temperature but the math escapes me.
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help understanding this complicated structure that will deploy HySIS

This ISRO page for the HysYS spacecraft says: HysIS, the primary satellite of PSLV-C43 mission, weighing about 380 kg, is an earth observation satellite configured around ISRO’s Mini Satellite-2 (...
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How well could the tether tension method of attitude control actually ultimately work for a cubesat system?

The phys.org new item Image: Small satellite deployed from the Space Station shows the cubesat craft Space Tethered Autonomous Robotic Satellite (STARS-C) being deployed from the ISS. A satellite ...
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Why do we need dedicated launch vehicles for small satellites?

The Wikipedia webpage on Small-lift launch vehicle gives a huge list of dedicated launch vehicles with a maximum payload capacity of 2,000 kg (4,400 lb) for small satellites, which are either retired,...
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Cost of an earth observation cubesat satellite like Planet Labs' Doves?

With the cubesat standard and more and more components being available off the shelf, this should really bring down the price of building a (simple) earth observation platform. I am curious how low a ...
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Attitude of the upcoming “Orbital Reflector”; will it result in good visibility?

There's a new (passive solar) orbital reflector, called the Orbital Reflector. While Mayak (Маяк) was a crowdfunded project at Moscow State Mechanical Engineering University and the Humanity Star ...
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123 views

Among Quantitative Feedback Theory and H infinity, which one is preferred for robust control of satellites esp. small satellites? And why?

I am interested in designing a robust controller for a small satellite with antenna, sloshing propellant and flexible panels on board. I am mostly interested in achieving arcsec precision pointing ...
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How do you find the temperature of an orbiting aluminum sheet 10x10 cm

I'm trying to find the temperature of a CubeSat in orbit at 140km. I'm trying to use the Stefan-Boltzmann law but don't know how to incorporate the energy from sunlight. I'm using this as a check for ...
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Why put both Orbex and Rocket Labs on adjacent launch pads in Scotland?

update: There's some recent and potentially helpful information in NASA Spacefligh: UK Spaceport at Sutherland enters public consultation phase I've just read Jonathan Amos' article in the BBC News ...
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Are there any CubeSats that have been launched into Geostationary (GEO/GSO) or Geostationary Transfer Orbit (GTO)?

There is one mission by GSFC/NASA - Shields-1 to be launched into GTO. Apart from that I couldn't find any other mission to GTO/GEO. It would be of great help if there is any information on this.
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Maintenance manouvers for a Dawn-Dusk SSO?

I'm in charge of the ADCS for a class project, which consists on a 25U-cubesat, in a 650-km dawn-dusk Sun-synchronous orbit or SSO. What are the orbit correction/maintenance manouvers a spacecraft ...
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Could a cubesat propel itself to Mars?

I wrote the answer below to the question Could a cubesat be propelled to the moon? before realizing that it said Moon and I'd written it for Mars, so I've cloned that question and moved the answer ...
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Operator access to a cube satellite or any educational satellite

I would like to have free or low-cost access to an existing CubeSat (educational satellite) for educational purposes. I wish to familiarise myself with the end to end command & control activities, ...
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How do these cubesats' whip antennas work?

This answer has identified the three 1U cubesats shown in the question, and links to Engineers Rule's Maya-1: The Philippines’ First CubeSat along with the video Animation of MAYA-1, The Philippines' ...
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Could an articulated permanent magnet work as a low-power cubesat magnetotorquer? Problems?

Conventional magnetotorquers for cubesats are electromagnets that produce torque in the Earth's magnetic field, and nearly all of the power they use just heats the copper through $\text{I}^2 \text{R}$ ...
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1answer
249 views

What body of regulations (if any) would apply to a cubesat with an SDR on board?

For example: the FUNcube Dongle Pro+ is a USB Software Defined Radio receiver, or SDR. It provides a digitized 192kHz wide chunk of IF (intermediate frequency) via high speed USB interface. Generally ...
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1answer
144 views

What cubesats are these, what flags are on them, and why? What's the background story?

This tweet includes the image below and says: Cubesats deploying from ISS. Question: What cubesats are these, what flags are on them, and why? What's the background story? Cropped, magnified and ...
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SpaceX rideshare missions: how many smallsats fit?

SpaceX has just announced their new smallsat rideshare program. Is it known how many satellites can be launched at once? Any estimates?
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If there “won't be” rockets to launch individual cubesats, then why did JAXA build exactly that? (SS-520-xx)

The question Why isn't there a rocket to launch a single cubesat? has several good answers that explain why there isn't and/or will not likely be one, based mostly on commercial viability, consistent ...
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Why isn't there a rocket to launch a single cubesat?

I find the business model for RocketLab interesting. It is said that they fill a niche in the market by using smaller rockets. And it is true, in comparison to e.g. Falcon 9's payload of 9,500 kg, ...
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Will JAXA try again to launch TRICOM-1 with the “world's smallest orbital rocket” SS-520-4 again?

From the Spaceflight 101 article Experimental Launch of World’s Smallest Orbital Space Rocket ends in Failure: SS-520-4 lifted off from the Uchinoura Space Center in Japan’s Kagoshima prefecture at ...
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Total delta-v expected from Lightsail-2's solar sail before end of mission, and why end it so soon?

While Bill Nye has recently gotten quite upset at us for some things (strong language for Bill Nye warning), in the video below he expresses heartfelt thanks to all members of the Planetary Society ...
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Impact of having two antennas on link budget calculations

I'm working on link budget of a cubesat mission that needs to have two dipole antennas that are perpendicular to each other. I want to know if having two antennas affect the link budget? losses, and ...
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How to reserve places on a SpaceX, Chinese or Indian rocket to send small satellites?

As in a title, I'm searching for a way of reserving a place on a rocket to send small satellites into space. Can it be only done by some kind of launch broker company? Is there any information on how ...
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How strict are dispenser integrators when a CubeSat requirement is not met?

I'm working on designing a CubeSat component which does not comply with all of the requirements in the latest CubeSat Design Specification (CDS), namely: "The ends of the rails on the +/- Z face ...
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Rapid deployment of cubesat network with Gauss cannons

Lets say I want to create a satellite constellation similar to earth's GPS network around the moon or mars with around 24 4U-6U cubesats as shown in this image: I was wondering is it possible/...
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Anyone know what happened to the AAReST project?

AAReST was a really neat project by Caltech and University of Surrey (UK) to experiment with a self-assembling space telescope mirror. There are some interesting articles and papers about it circa ...
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IRIS Transceiver for LEO Missions?

My professor really wants to know if the IRIS transceiver, which flew on MarCo, will be used in LEO. In fact so much that he doesn't accept "no" for an answer. I have searched for an example but found ...
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Are there cubesats in GEO?

This answer to the question How often do reaction wheels require desaturation, normally? says: One practical example I know of is for a 6U in GEO that is always sun pointed, there's a thruster ...
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The fine prints of launching a satellite

I have read about the space law, international and legal responsibility of the companies and countries involved and I must say it is complex, not to say scary. I can't imagine the lawyers' costs prior ...
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What stole the INSPIRE cubesat launch opportunity, and will there be another?

Doing research for this answer about interplanetary cubesats, I watched the NASA Jet Propulsion Laboratory YouTube channel video CubeSats (live public talk) of a talk by Dr. Andrew Klesh, Chief ...
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Temperature of a satellite orbiting in low Earth orbit

I am working on a project for science fair that involves a deployable component that will not be heated on a CubeSat. I am trying to find data for the skin temperature of a satellite (or the ISS) over ...
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What regulations, agreements, or other forces can help mitigate “PrankSats”? [closed]

comment: I've used a somewhat innocuous abstraction of 'pranks in space' below, but there's no end to the trouble that could be caused and the increasing ease with which a state (nation or otherwise) ...
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Was any data actually transmitted between OSCD and ISARA in the recent CubeSat lasercom test?

Two CubeSats (the OCSD and ISARA CubeSats) recently demonstrated technology for on-orbit sat-sat laser communications. All the information I have been able to find doesn't indicate if the test ...
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What is the estimate price for small ion thrusters on cubesats?

I can't find much about price for ion thruster and I read from somewhere that most ion thruster are off the rack product. I just need the rough estimate price for a small ion thruster and the closest ...
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How do we manage the residual magnetic moment of magnetorquer with a ferromagnetic core?

I'm currently working on a control algorithm, specifically in detumbling, for a 3U cubesat. I'm using magnetorquers for actuation and magnetometers to receive feedback. If I have no current passing ...
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Suggestions required on radiation tolerance solutions

I wanted to know what methods of increasing radiance tolerance for the microcontroller and memory devices for a Cubesat exist. We have read about methods like having dual CPUs but are there any ...
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1answer
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What are ways to store hydrogen for electric propulsion without a heavy pressure vessel?

This comment points out that any advantages of using low-mass ionized atomic hydrogen (i.e. protons) for electric propulsion if you had a fixed acceleration voltage and plenty of electrical power ...
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Could a cubesat be self propelled to the moon from LEO?

Is it possible with current technologies to propel a cubesat, which is launched from Earth, to the moon? If current propulsion systems are able to do so, how do I continue the research in this topic ...
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Typical 1U CubeSat Detumbling time determination using passive control?

I would like to be able to estimate roughly how long it takes for a 1U cubesat using a permanent magnet for passive control to detumble after the deployment at about 550 km. Assuming there is some ...
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What are the prospects for comms with cubesats using “normal” internet connections?

Can a cubesat in orbit be operated like a R/C airplane in real time? edit: if the link here and the end aren't clear, I'm interested in the ease and convenience of access, the frequency of possible ...
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How close will the cubesats be when numerous of them are launched simultaneously?

Checking the onboard video of PSLV C43 gives a feel like the CubeSats are released in very proximity. Does this mean that these CubeSats will be orbiting in such very close proximity through out ...
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1answer
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New Terran 1 rocket - launch costs for Cubesat

I was reading about the Terran 1 rocket and the fact that the founding company managed to secure the launch site at Cape Canaveral. Pretty amazing story on its own but then I looked at prices and they ...
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Which Cubesat Cameras Actually Worked in Orbit before 2019?

Short question: Which Cubesat Cameras Actually Worked in Orbit before the year 2019? Context and explanation: The very few missions which published at least one image I've found: Planet Labs ...
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What is “OBJECT BS”?

I checked 2018-099 in Celestrak's satcat again for the question Where can I find the TLE of ExseedSat 1, India's first ever private LEO satellite? and noticed that ...
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What can be done in future mass-cubesat deploys to make them “less irksome” to orbital space debris experts?

In the first group of questions below the block quotes, I've illustrated situations where a large number of cubesats are deployed at one launch (56 an 104 satellites) and it seemed to take quite a ...
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122 views

Could you track small particles in space and could you control their position with lasers or reflected light?

If you released a large amount of small but precise particles (the size of glitter or confetti) is space, between a group of cube sats. Could you track the particles with cameras and/or lasers? And ...
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1answer
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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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How are cubesat electronics protected against the effects of radiation in LEO?

I'm curious to know the various ways that cubesat electronics can be protected from the effects of cosmic rays or solar events while in LEO. How different are the components used in cubesats from some ...
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Number of Access Ports

I am currently developing a 3U CubeSat and following the Design specifications Rev. 13. there are 3 access ports. Must I provide 3 access ports or 1 access port in one of the locations defined by the ...