LE-5B
LE-5B
The LE-5B rocket engine, developed for the second stage of the H-II rocket, is the improved model of LE-5A engine. It is the first rocket engine in the world which uses the hydrogen used for the cooling of the thrust chamber as the turbine gas.
Main specifications
Propellant | Liquid oxygen/liquid hydrogen |
---|---|
Thrust (vacuum) | 14 ton |
Isp (vacuum) | 449sec |
Weight | 285kg |
Length | 2,765mm |