Summary

The Bradford ECAPS's 5N HPGP Thruster is designed for attitude, trajectory and orbit control of small and medium satellites, providing higher thruster when and where it is needed.

The 5N HPGP thruster is currently undergoing a test fire campaign with the NASA Goddard Space Flight Center, characterizing the performance of the thruster. The 5N HPGP is being examined for potential use for an interplanetary mission, where it will provide a key maneuver and orbit-insertion capability.

  • Non-toxic propellent makes for easier and less costly integration on secondary or 'piggy-back' missions.
  • Propellant loading is simple, fast and avoids the cost associated with loading hydrazine. Allows the operator to spend less time on ground operations and more time on space operations.
  • 'Fuel at the factory' – be ready for launch vehicle integration upon arrival at the launch pad.
  • Non-toxic propellant makes payload adaptor rings suitable for a new class of small satellite launchers, where handling hazardous hydrazine may impede operations or where fully equipped hydrazine processing facilities may be non-existent.
  • Higher performance over hydrazine allows for more payload or longer mission durations.
  • Allows for more secondary or 'piggy-back' launch opportunities, especially missions where there is concern about the hazards of hydrazine and its risks to the primary payload.
  • Allows for more capable missions than spacecraft without propulsion.
  • Allows for more agile mission profiles than electric propulsion. Spacecraft take significantly less time to execute maneuvers and orbit changes.

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Last updated: 2021-05-26

5N HPGP Thruster

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Specs

5TRL
inlet pressure range
5.5 to 24 bar
thrust range
1 to 5.5 N
Nozzle Expansion Ratio
150:1
Steady State Isp
2385 to 2480 Ns/kg
specific impulse
239 to 253 s
Density Impulse
2908 to 3075 Ns/L
minimum impulse bit
< 0.1 N s
length
221 mm
mass
0.48 kg
Nominal Reactor Pre-heating Voltage
28 VDC
Regulated Reactor Pre-heating Power
18 to 25 W
Pulses
50000 (Target Life – Qual. Level)
10000 (Demonstrated Life)
Propellant Throughput
100 (Target Life – Qual. Level)
5 (Demonstrated Life)
Longest Continious Firing
10 (Target Life – Qual. Level)
60 (Demonstrated Life)
Accumulated Firing Time
20 (Target Life – Qual. Level)
1 (Demonstrated Life)
Firing Sequences
350 (Target Life – Qual. Level)
115 (Demonstrated Life)

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