Susan Smith has worked as an editor and writer in the technology industry for over 16 years. As an editor she has been responsible for the launch of a number of technology trade publications, both in print and online. Currently, Susan is the Editor of GISCafe and AECCafe, as well as those sites’ … More »
Satellites: Large and Small – Questionnaire for GISCafe Special Coverage!
January 22nd, 2018 by Susan Smith
This questionnaire is aimed toward those who do research and development on traditional artificial satellites and “smallsats,” as well as those customers of satellites, and companies providing third party solutions for them. Since companies of larger satellites produce small satellites as well, larger satellites, their features and their pros and cons are included in this questionnaire.
Small satellites (smallsats) is a term describing any satellite that is the size of an economy sized washing machine, all the way to a satellite like CubeSat that you can hold in your hand, according to NASA. They are generally of low mass and size, under 500 kg or 1,1000 pounds. There are different classifications to categorize them based on mass.
The classifications groups include:
Small satellites: those with a wet mass (refers to a measure of the efficiency of a rocket – vehicle plus contents plus propellant) including fuel of between 100-500 kg and 1,100 lb.
There are small satellite launch vehicles that are specific to smallsats and some that are launched as secondary payloads on larger devices.
Microsatellites have a wet mass of between 10 and 100 kg (22 and 220 lb). Other defining characteristics are that these may work together and also work in a formation, called a satellite swarm.
Microsatellite launch vehicles are being developed by military contractor and commercial companies.
Nanosatellites is applied to an artificial satellite with a wet mass between 1 and 10 kg (2.2 and 22.0 lb). These may be launched individually or work in formation and work in a satellite swarm.
Miniaturization is taking levels of capability to a smaller footprint and nanosatellites also are subject to new Nanosatellite Launch Vehicle Technology development.
Picosatellites are those artificial satellites that have a wet mass between 0.1 and 1 kg (0.22 and 2.2 lb), and again these satellites may work together or in a formation. They may require a mother satellite for communication with ground controllers as nanosatellites may do.
Femtosatellites applies to artificial satellites with a wet mass of between 10 and 100 g (0.35 and 3.5 oz) Again, some of these designs require a larger mother satellite to communicate with ground controllers.
Why a large or small satellite? Often the small sat can ride on a larger mission. CubeSats were developed by researchers at California Polytechnic State University and Stanford University who wanted a standardized format that was small and would enable students to get into designing, building and launching a satellite.
Submit your completed questionnaire before February 1st to be included in this coverage to Susan Smith, Editor, GISCafe, firstname.lastname@example.org
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