Astra Rocket, Propulsion

Propulsion Astra Rocket

Electric pump engine "Delphin" (RP-1/LOX)

Pressure-fed engine "Aether" (RP-1/LOX)

Rocket 3.1	Engine	Thrust s.l.	Isp s.l.	Thrust vac	Isp vac	Propellant	Burn time	Flow rate	Total Imp
Rocket 3.1	Engine	kN	N*s/kg	kN	N*s/kg	t	sec	t/s	MN*sec
1	Delphin (5)	140.1	?	?	?	?	138
2	Aether			3.0	?	?	376

Rocket 3.3	Engine	Thrust s.l.	Isp s.l.	Thrust vac	Isp vac	Propellant	Burn time	Flow rate	Total Imp
Rocket 3.3	Engine	kN	N*s/kg	kN	N*s/kg	t	sec	t/s	MN*sec
1	Delphin (5)	144.6	?	?	?	?	170
2	Aether			3.3	?	?	325

Firefly Reaver engine (two combustors)

Ursa Major Hadley vac engine

Rocket 4.0	Engine	Thrust s.l.	Isp s.l.	Thrust vac	Isp vac	Propellant	Burn time	Flow rate	Total Imp
Rocket 4.0	Engine	kN	N*s/kg	kN	N*s/kg	t	sec	t/s	MN*sec
1	Reaver (2)	333.7	2899	368.0	3197	?		0.1151
2	Hadley vac			27.1	3614	?		0-0075