Summary

Bradford ECAPS's 200N HPGP Thruster is designed for launch vehicle upper-stage reaction control and potential defense applications, such as missile defense. Much of the work into the 200N HPGP has been to investigate potential uses on various launch vehicle upper stage programs, including the Ariane 5ME, and for various spacecraft orbit-raising applications. This thruster is currently in development and looking for partners to bring the prior work into fruition.

  • 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. Eliminates significant time and cost from lengthy pre-launch campaigns.
  • Non-toxic propellant is suitable for a new class of responsive small satellite launchers, where handling hazardous hydrazine may impede operations or where fully equipped hydrazine processing facilities may be non-existent at the launch site.
  • Higher performance over hydrazine allows for more payload or longer mission durations.
  • 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: 2022-05-28

200N HPGP Thruster

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Specs

5TRL
inlet pressure range
5 to 26 bar
thrust range
50 - 200 N for RCS
55 - 220 N for Δ∨
Nozzle Expansion Ratio
30:1 for RCS
150:1 for Δ∨
Steady State Isp
2020 - 2300 Ns/Kg for RCS
2385 - 2500 Ns/Kg for Δ∨
specific impulse
206 -234 s for RCS
243 -255 s for Δ∨
Density Impulse
2050 - 2852 Ns/L for RCS
2957 - 3100 Ns/L for Δ∨
minimum impulse bit
≤ 9 Ns for RCS
length
280 mm overall for RCS
390 mm overall for Δ∨
mass
5.7 kg for RCS
6 kg for Δ∨
Nominal Reactor Pre-heating Voltage
55 VDC
Regulated Reactor Pre-heating Power
150 to 250 W
pulses1
2000 for RCS
10 for Δ∨
1500
Propellant Throughput2
150 kg for RCS
25 kg for Δ∨
24 kg
Longest Continious Firing3
10 minutes- for RCS
200 s for Δ∨
20 s
Accumulated Firing Time4
40 minutes for RCS
400 s for Δ∨
7.7 min
Firing Sequences5
100 for RCS
10 for Δ∨
100

1. Target Life – Qual. Level

2. Target Life – Qual. Level

3. Target Life – Qual. Level

4. Target Life – Qual. Level

5. Target Life – Qual. Level

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