space debris mitigation using dedicated solid rocket
TRANSCRIPT
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Space Debris Mitigation Using Dedicated Solid Rocket Propulsion
Paweł NowakowskiŁukasiewicz Research Network – Institute of Aviation, Warsaw, Poland
United Nations
Committee On The Peaceful Uses Of Outer Space
Scientific And Technical Subcommittee
57th Session, Vienna, 3–14 February 2020
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Space Debris Mitigation
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Source: ESA, 2019
For over 20 000 objects in orbit only around 2 000 is operational
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Polish deorbitation tests: PW-Sat and PW-Sat2
PW-Sat (2012-2014)
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PW-Sat2 (2018-?)
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Polish deorbitation tests: PW-Sat and PW-Sat2
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Łukasiewicz Research Network – Institute of Aviation
• Over 1300 employees
• 90 years of R&D
• Projects within Aerospace, Energy and Power
• Dedicated Space Technologies Center
• Heritage in satellite flight hardware
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Monopropellant Thrusters
Liquid Apogee Engines
(bipropellant)
Solid Rocket Motors
Suborbital Rocket
Upper Stage Engine
/Lander Engine
SPACECRAFT PROPULSION SPACE TRANSPORTATION
Meteor 2K(105 km in 1970)
ILR-33 Amber(2017)
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Development of the deorbitation motor under ESA projects
1. CleanSat: Technology assessment and Concurrent engineering in support of LEO platform evolutions - ”Solid rocket motor for deorbit” (finished)
2. Pre-Qualification of Aluminium-free Solid Propellant (finished)
3. Solid Rocket Motor for Deorbitation Engineering Model Development (in progress)
4. TVC System for Deorbitation SRM (future)
5. Solid Rocket Motor for Deorbitation with TVC Qualification Model Development (future)
6. Solid Rocket Motor for Deorbitation Flight Model Development (future)
7. In-orbit Demonstration
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Advantages of Solid Rocket Motors
• Simple construction
• Compact size
• High reliability
• Direct deorbitation capabilities• On-ground casualties risk elimination
• Wide range of thrust levels and profiles
• Relatively high performance• High density specific impulse
• Proven storability (on-ground)
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Propellant development
Challenges• High total impulse for direct deorbitation
• Limited acceleration (long burn time)
• Solid particles generation
• Storability
New propellant composition
• AP/HTPB system• Optimized oxidizer-fuel ratio
• End-burning grain• Low chamber pressure• Burn rate moderators• Multimodal AP
• Aluminium-free propellant
• Vacuum, accelerated aging, radiation testing
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Propellant testing
• Safety assessment
• ADR classification
• Vacuum stability
• Accelerated aging
• Radiation testing
• Test Motor• Performance confirmation
• Solid particles detection
• Materials screening
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Nominal mission
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Satellite
Mass 1 500 kg
Initial orbit SSO
Propulsion System
Number of motors / fried simultaneously 4 / 2
Maximum acceleration 0.04 g
Total required ΔV 200 m/s
Motor
Maximum thrust 250 N
Propellant mass 31.0 kg
Total impulse 82.5 kNs
Nozzle expansion ratio 200
Specific impulse 272 s
80 km
800 km
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Deorbitation SRM Engineering Model
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• Materials selection
• Thermal insulation
• Nozzle throat regression
• Total impulse adjustment• Clustering
• Scalable design (length reduction)
• System Level integration
• Full-scale testing
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Alternatives – liquid green propulsion
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Liquid rocket engines using H2O2
Hybrid rocket motors using H2O2
Monopropellant thrusters using H2O2
Highly concentrated Hydrogen Peroxide (over 98%)Various solutions designed and tested at the Institute:
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Conclusions
• Institute has over 50 years of experience in rockets and chemical
propulsion development
• Dedicated Solid Rocket Motor for deorbitation is under development
• Institute is one of the leaders in liquid green propulsion design and testing
• Institute provides solutions for end-of-life disposal in line with the Space
Debris Mitigation Guidelines
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Acknowledgements
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I would like to offer my special thanks to Prof. Piotr Wolański and Dr Leszek Loroch for valuable advice and support of this work.
Thank you for your attention
Contact:
Pawel Nowakowski
Project Manager