Tag: Satellite
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York Space Systems Launches New Commercial Services Program for National Security
York Space Systems (York), the Denver-based aerospace company dedicated to the rapid deployment of complete space mission solutions, announced a new commercial services program designed to provide the USG with critical national security capabilities as a service. This offering leverages York’s flight-proven satellite designs, originally developed for government customers and delivers them as an on-demand…
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Eutelsat and ATSS Extends Satellite Capacity Agreement for MENA Broadcast Services
Eutelsat Group and Saudi Arabia’s Advanced Telecommunications Solutions and Services (ATSS) have renewed their satellite capacity agreement on the EUTELSAT 8 West B satellite reinforcing the long-standing collaboration between the two companies. The contract signing took place during the LEAP event in Riyadh, Saudi Arabia. ATSS is a leader in satellite communications in the MENA…
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What is a Hall Effect Thruster?
Hall-effect thruster or Hall-current thruster is a type of Ion Thruster in which the propellant is accelerated by an electric field. Hall effect thruster consists of an acceleration chamber, an external cathode (negative electrode), an anode (positive electrode), and coils to produce a magnetic field. As the cathode is heated it starts emitting electrons and…
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What is an Electrospray Thruster?
An Electrospray Thruster is a type of Ion Thruster that produces low thrust by using a strong electric field to accelerate charged liquid droplets. Some types of electrospray thrusters use a mixture or a combination of different liquids as propellant and hence are known as colloids. Therefore these thrusters are also known as Colloid thrusters.…
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What is a Pulsed Plasma Thruster?
A Pulsed Plasma Thruster (PPT) is the simplest form of electric propulsion that uses the natural properties of plasma to produce thrust and high velocities with low fuel consumption. Compared to other forms of electric propulsion a PPT usually operates by creating a pulsed, high current discharge across the exposed surface of a solid insulator…
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What is a Monopropellant Thruster?
A monopropellant thruster is a thruster that uses a single chemical as its propellant. Monopropellants are propellants that consist of chemicals that release energy through exothermic chemical decomposition. This release of energy is usually accomplished with the help of a catalyst. A monopropellant does not require a separate oxidizer. Also Read: What is a Bipropellant…
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What are Electrothermal Thrusters?
Electrothermal thrusters uses electric energy to heat the propellants either into a plasma or hot gas which is then expanded through a nozzle to produce thrust. Compared to both electromagnetic and electrostatic propulsion systems that propel charged ions through the use of electric and magnetic fields, electrothermal thruster relies upon thermal dynamics to propel the…
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What is a Bipropellant Thruster?
A bipropellant thruster is a thruster that uses two propellants (very often liquid propellants) which are kept separately before reacting to form a hot gas to be used for propulsion. Also Read: What is a Power Processing Unit (PPU) for Thrusters? Bipropellant systems require the combustion of two (Bi) propellants. First one is a fuel and the…
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What is a Cold Gas Thruster?
A cold gas thruster is a type of propulsion system which uses the expansion of pressurized gas to generate thrust. It consist of a fuel tank, a regulating valve, and a propelling nozzle. The nozzle of a cold gas thruster is generally made of a convergent-divergent shape so that it provides a required thrust in…
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What is an Ion Thruster?
An Ion Thruster is a form of electric propulsion that works on the concept of ionization. This process involves the extraction of ions from the plasma to produce thrust. The ions extracted are accelerated by using electric fields that generate many ion jets together called the ion beam that produces the required thrust for the…