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: 69,655 Ns (70% P)
Propellant: Ocean Water
Average thrust: 9,464 N
Motor designation: P-9500
Propellant mass: 67.12 lbs
Delivered ISP (approximate): 233 s
Nozzle throat dia: 1.650 in
Nozzle exit dia: 5.03 in
Expansion ratio: 9.29
Burn time: 7.36 s
Max chamber pressure: 839.9 psi
Testing
Component Level Testing
- Characterization Static Fire #5
- Characterization Static Fire #6
- Hydrostatic Testing - Pending