Specific impulse, etc.

One of the best rocket propellants there is is hydrolox – a combination of liquid hydrogen, the fuel, and liquid oxygen, the oxidiser. This might seem a bit unexpected because most (if not all) other fuels performing the same function are compounds, not elements – like 1,1-dimethylhydrazine. An engine that uses hydrolox as its propellant … Read more

GSLV D6 is a confidence booster

The GSLV Developmental-flight 6 launch by the Indian Space Research Organisation on August 27 was three things: the launch of the GSAT 6 satellite for the Indian military, the fifth successful launch of a GSLV rocket, and the second successful test-flight of the indigenous cryogenic upper-stage engine. The satellite is a two-tonne behemoth that’s too heavy … Read more