Purpose
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: 79,110 Ns (93% P)
Propellant: Ocean Water
Average thrust: 10,749 N
Motor designation: P-10749
Propellant mass: 64.89 lbs
Delivered ISP (approximate): 274 s
Nozzle throat dia: 1.758 in
Nozzle exit dia: 5.38 in
Expansion ratio: 9.37
Burn time: 7.36 s
Max chamber pressure: 850.7 psi
Testing
Component Level Testing
- Characterization Static Fire #5
- Characterization Static Fire #6
- Hydrostatic Testing - Pending