Space (Physics) Part-III

Jet engines and rockets work on the same principle. They produce thrust through an internal pressure difference and as explained by Newton's third law of motion, eject exhaust gases in an equal and opposite direction.

The main difference between them is that a Jet gets the oxygen to burn its fuel from the air while a rocket carries its own supply of oxygen (oxidiser) and fuel in the form of liquid or solid propellants which allows it to operate in space.

Jet spacecraft's efficiently managed fuel combustion at low temperature in the stratosphere. The type of turbulence caused by convection heating that causes thunderstorms does not occur in the stratosphere. There are no clouds or water vapour and also no vertical winds in the lower stratosphere

Nearly all modern airplanes use jet propulsion to fly. Jet engines and rockets work on the principle of conservation of linear momentum.

An electric rocket engine is a jet engine in which material ejected backward (ionized gas in general) causes a forward thrust to the rocket (on the principle of conservation of momentum). The linear momentum (p) or simply momentum of a particle is the product of its mass and its velocity [i.e. p = mv].

Stratellite is the high altitude airship positioned in the stratosphere and carries one or more repeaters to create wireless communication networks. A stratellite is similar to a satellite, but is stationed in the stratosphere rather than in the orbit.

In Physics, Cryogenics is the study of the production and behaviour of materials at very low temperatures i.e. below - 150° C (123 K or - 238°F).

Low temperature (cryogenics) applications are used in space travel, magnetic levitation and telemetry.

The word Cryogenics was originated from the Greek word 'Kryos' meaning 'frost' and 'genic' to produce. Usually, cryogenics has been used to refer temperatures below approximately -150°C.

A cryogenic engine is used as the rocket engine that uses a cryogenic fuel and oxidizer. Its fuel and oxidizer are gases liquefied and stored at very low temperatures (below-150°C).

The cryogenic engine generally uses liquid oxygen as the oxidizer and liquid hydrogen as the fuel, that require for storage at an extremely low temperature in order to maintain them in a liquid state. Cryogenic engines are also used in space shuttles.

The cryogenic engine generally uses liquid oxygen as the oxidizer and liquid hydrogen as the fuel, that require for storage at an extremely low temperature in order to maintain them in a liquid state. Cryogenic engines are also used in space shuttles.