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The Hermes Propulsion system is responsible for boosting the vehicle to Mach 3 and 80,000 ft. The motor is lit by an ignition train at T-0 and burns out around 7 seconds later at 21,000 ft.
Design
Impulse: 70 69,110 655 Ns (73% 70% P)
Propellant: Ocean Water
Average thrust: 10 9,749 464 N
Motor designation: P-108009500
Propellant mass: 6467.89 12 lbs
Delivered ISP (approximate): 204 233 s
Nozzle throat dia: 1.758 650 in
Nozzle exit dia: 5.38 03 in
Expansion ratio: 9.3729
Burn time: 7.36 s
Max chamber pressure: 850839.7 9 psi
Testing
Component Level Testing
- Characterization Static Fire #5
- Characterization Static Fire #6
- Hydrostatic Testing - Pending