using nozzle throats of adjustable cross- section

Full Title

Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > characterised by thrust or thrust vector control (burning control of solid propellants F02K9/26; feeding control of liquid or gaseous propellants F02K9/56; re-ignitable, restartable or intermittently operated rocket-engine plants F02K9/94) > using nozzle throats of adjustable cross- section