What is cryogenic engine?

Definition: A cryogenic engine/ cryogenic stage is the last stage of space launch vehicles which makes use of Cryogenics. Cryogenic engine makes use of Liquid Oxygen (LOX) and Liquid Hydrogen (LH2) as propellants which liquefy at -183 deg C and -253 deg C respectively.

What is cryogenic engine Upsc?

The word itself refers to the technology of sub-zero temperatures. Cryogenic engines use liquid oxygen as the oxidizer and liquid hydrogen as the fuel. As it is known Oxygen can be kept in the liquid state below – 183 degrees Celsius, while hydrogen requires temperature below – 253 degrees Celsius to be in liquid form.

How does a cryogenic system work?

How Do Cryogenic Freezing Systems Work? Cryogenic systems use direct impingement with a cryogen — either liquid nitrogen or carbon dioxide (CO2) — to rapidly remove heat from the products being processed. CO2 is a consumable refrigerant that is sprayed directly onto the product.

What is the difference between cryogenic and liquid hydrogen engines?

The obvious difference is the fuel. Liquid hydrogen has a boiling point of 20K making it very difficult to handle. The materials used in handling the fuel need to account for changes in temperature. Though the cryogenic engine offers the highest specific impulse, it requires a larger tankage owing to lower density of H2 and a heavier engine.

Which is an early example of cryogenic rocket engine?

RL-10 is an early example of cryogenic rocket engine. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer (or both) are gases liquefied and stored at very low temperatures.

What are the most common cryogenic fuel-oxidizer combinations?

Various cryogenic fuel-oxidizer combinations have been tried, but the combination of liquid hydrogen ( LH2) fuel and the liquid oxygen ( LOX) oxidizer is one of the most widely used.