The Haas 2CA is the development base for the whole Haas rocket series.

Haas 2CA Imperial Metric Length 53 ft 16 m Diameter 4.95 ft 1.5 m Empty mass 1,210 lbs 550 kg Launch mass 35,887 lbs 16,290 kg Payload mass 220 lbs 100 kg Number of stages 1 1 Engine type Linear aerospike Linear aerospike Engine feed Pressure fed Pressure fed Pressurant Engine heated LHe Engine heated LHe Number of chambers 16 16 Spike cut 80% 80% Nozzle expansion ratio 80 80 Cooling type Ablative + RP-1 film Ablative + RP-1 film Oxidizer Hydrogen Peroxide Hydrogen Peroxide Fuel RP-1 RP-1 Burning time 272 s 272 s Total thrust at sea level 50,500 lbf 22,920 kgf Total thrust in vacuum 73,800 lbf 33,500 kgf Sea level impulse 230 s 230 s Vacuum impulse 314 s 314 s Total HTP flow rate 194 lbs/s 88 kg/s Total RP-1 flow rate 26 lbs/s 12 kg/s Total propellant flow rate 220 lbs/s 100 kg/s Mixture ratio including the film cooling 7.46:1 7.46:1 Propellant tanks pressure 300 psig 20 barg Chamber pressure 235 psig 16 barg