Satellite Community

What is NASA EEE-INST-001 Standard?

Editorial Team

SatNow

The NASA EEE-INST-001 provides instructions for choosing Capacitors, Crystal Oscillators, Diodes and Transistors, Fiber Optics, Filters, Fuses, Microcircuits, Magnetics, Relays, Resistors, Thermistors, Wire and Cable based on mission needs and requirements. To qualify for certain specific missions, the parts or equipment must be tested and approved by NASA under the NASA EEE-INST-001. Like al...read more

What is NASA EEE-INST-002 Standard?

Editorial Team

SatNow

The NASA EEE-INST-002 provides instructions for choosing space connectors based on mission needs and requirements. Space connectors are utilized within the electronic equipment used in space applications, whether on a spacecraft or a satellite. To qualify for certain specific missions, the connectors must be tested and approved by NASA under EEE-INST-002 standards. Like all other components used i...read more

NASA's Electrical, Electronic and Electromechanical (EEE) Parts Selection Standards & Guidelines

Editorial Team

SatNow

NASA provides guidelines to developers, engineers, and manufacturers to choose and manage parts and equipment to facilitate several space explorations and missions. To qualify for certain specific missions, the parts or equipment to be used must be tested and approved by NASA under their specified regulations and instructions. All components used in space must meet the stringent testing for o...read more

What are Satellite Transponders?

Editorial Team

SatNow

Satellite transponder provides a communication channel between the transmitting & the receiving antenna on the satellite with the base station on the ground. A transponder performs the function of both the transmitter and the receiver in a satellite.Transponders mainly perform the function of receiving a given signal and then processing, amplifying, and retransmitting the signal to another loc...read more

What are Space Reflectors?

Editorial Team

SatNow

Space reflectors also known as space mirrors, a form of solar radiation management [SRM], are sun shields positioned in space to reduce the amount of solar energy reaching the earth.Space reflector is an idea that has been in constant development. The earth absorbs up to 70% of the solar rays that are emitted from the sun. The absorption of heat causes the earth the release infrared radiation that...read more

What are Satellite Antennas?

Editorial Team

SatNow

Satellite antennas are used to concentrate the satellite’s transmitting power towards a designated geographical region on earth and avoid interference from undesired signals that will deteriorate the overall quality of the signal.Antennas that are used onboard satellites are selected based on the requirements of their physical configurations, expected to have low volume, low cost, and high a...read more

What is an Atomic Clock?

Editorial Team

SatNow

An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms where each atom that is used has naturally occurring oscillations. For any clock to function efficiently, oscillations produce a steady reproducible beat regularly. Clocks for displaying time predominantly use a quartz crystal that produces a low frequency (32,767 Hz) which will eventually result in an erro...read more

What are Electrical Ground Support Equipments (EGSE)?

Editorial Team

SatNow

Electrical Ground Support Equipment (EGSE) are tools that are used by satellites & engineers on the ground to test and validate the integral electrical functions of a satellite or a spacecraft before launch. EGSE consists of hardware as well as software elements that are used to conduct tests of the satellite to ensure compatibility of all electrical components with the satellite.An EGSE syste...read more

What are Cryocoolers?

Editorial Team

SatNow

Cryocoolers are refrigerators that are designed to reach cryogenic temperatures (-130 ). They are designed in tabletop sizes and have an input power of less than 20 kW. A cryogenic refrigerator has four major components:In the first stage, the gas gets compressed and goes to the heat exchanger. Here any residual heat from the gas is removed and is expanded due to a sudden drop in the pr...read more

What are Thermal Straps?

Editorial Team

SatNow

Thermal straps or thermal links are heat transfer devices that help dissipate the heat from the source of the application to a heat sink which helps to transfer the heat to a fluid medium like air or a liquid coolant. Thermal straps are made up of conductive materials such as copper cables, aluminum foil & graphite sheets.Apart from transferring heat, thermal straps are also used to reduce err...read more

What are Multistage Rockets?

Editorial Team

SatNow

Multistage rockets are spacecraft/satellite launch vehicles that consist of two or more rocket stages with each stage containing its engines and propellants which are detached post-launch one after the other till the payload reaches its intended orbit or destination. Multistage rockets are predominantly used as they are much more cost-effective when compared to single-stage rockets and they will h...read more

What are the the Different Types of Launch Vehicles used in Space?

Editorial Team

SatNow

Launch vehicles or carrier rockets are classified mainly based on the weight of the payload which they carry.Small-lift launch Vehicles: A small-lift launch vehicle is an orbital launch vehicle that is capable of lifting 2,000 kg (4,400 lb) of payload into Low earth orbit (LEO). Examples of small lift launch vehicles are Sputnik & Vega.Medium lift launch Vehicles: A Medium lift launch vehicle ...read more

What is a Launch Vehicle?

Editorial Team

SatNow

A launch vehicle or a carrier rocket can carry a payload or a satellite/spacecraft from the surface of the earth to the Lower earth orbit after which the payload or the satellite is deployed and will reach its intended orbit or destination. Launchpads are a primary requirement to launch spacecraft or satellites into space. Launchpads of the carrier rocket can be located on land, on a fixed or...read more

What are the Different Types of Solar Panels used in Space?

Editorial Team

SatNow

Crystalline Silicon PanelsCrystalline Silicon Panels were first used in 1958 for the VANGUARD-1 satellite. Panels made from silicon have a much lower efficiency i.e 15-20% electricity generated because silicon panels can only absorb visible sunlight and not infrared & UV rays. Additionally, silicon panels are more susceptible to degradation over time due to the development of microcracks in th...read more

Why are Solar Panels used in Satellites & Spacecrafts?

Editorial Team

SatNow

Spacecrafts or satellites that orbit around the earth, near the sun are powered by solar energy. Solar panels are fitted on these satellites or spacecraft and are economical and conserve space and energy. That’s why they are preferred over batteries for operation. Space-based solar panels can generate up to 2000 gigawatts of power constantly because these satellites are primarily in the eart...read more

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Satellite Community

What is NASA EEE-INST-001 Standard?

What is NASA EEE-INST-002 Standard?

NASA's Electrical, Electronic and Electromechanical (EEE) Parts Selection Standards & Guidelines

What are Satellite Transponders?

What are Space Reflectors?

What are Satellite Antennas?

What is an Atomic Clock?

What are Electrical Ground Support Equipments (EGSE)?

What are Cryocoolers?

What are Thermal Straps?

What are Multistage Rockets?

What are the the Different Types of Launch Vehicles used in Space?

What is a Launch Vehicle?

What are the Different Types of Solar Panels used in Space?

Why are Solar Panels used in Satellites & Spacecrafts?

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