Browse > Article
http://dx.doi.org/10.5139/JKSAS.2018.46.2.175

Conceptual Design of Electric-Pump Motor for 50kW Rocket Engine  

Kim, Hong-Kyo (Pusan National University)
Kwak, Hyun-Duck (Korea Aerospace Research Institute)
Choi, Chang-Ho (Korea Aerospace Research Institute)
Kim, Jeong (Pusan National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.46, no.2, 2018 , pp. 175-181 More about this Journal
Abstract
Electric pump system is new technology for next generation propulsion unit. The system has simple structure which dose not need gas generator, injector and turbine and might better pump for low cost and low payload rocket. Therefore, this paper suggests conceptual design of electric-pump Permanent-Magnet Synchronous Motor (PMSM) which has 50 kW & 50,000 RPM for rocket. To satisfy the system's requirement, electromagnetic analysis is conducted for suitable inner and outer diameter of stator and rotor which uses 4000 Gauss cylinder magnet and Inconel 718 can to fix whole rotor. Futhermore, to confirm rotational vibration, rotordynamics analysis is conducted. By this analysis, Campbell diagram is printed. From the diagram, natural frequency could be determined for the only motor and dynamo meter test bench.
Keywords
Electric pump; Turbopump; Permanent-Magnet Synchronous Motor(PMSM); Electromagnetic analysis; Rotordynamic analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Jeong, E. H., Kwak, H. D., Kim, D. J., Kim, J. S., Noh, J. G., Park, M. J., Park, P. G., Bae, J. H., Shin, J. H., Wang, S. W., Yoon, S. H., Lee, H. G., Jeon, S. M., Choi, C. H., Hong, S. S., Kim, S. L., Kim, S. H., Woo, S. P., Han, Y. M., and Kim, J. H., "Performance Test of a 75-tonf Rocket Engine Turbopump," Journal of the Korean Society of Propulsion Engineers, Vol. 20, No. 2, 2016, pp.86-93.   DOI
2 BKC METAL BELLOWS COUPLING ECONOMY CLASS COMPACT VERSION WITH CLAMPING HUB, from https://www.rw-america.com/products/precision-couplings/metal-bellows-couplings/bkc/
3 G. Genta, "A fast modal technique for the computation of the Campbell diagram of multi-degree-of-freedom rotors," Journal of Sound and Vibration, Vol. 155. Iss. 3, 1992, pp.385-402.   DOI
4 Jeong, S. M., Kim, K. S., Oh S. J., and Choi, J. Y., "New Technologies of Space Launch Vehicles including Electric-Pump Cycle Engine," Journal of the Korean Society of Aeronautical Space Science, Vol. 44, No. 2, 2016, pp.139-155.   DOI
5 NASA, Inside the LEO Doghouse: The Art of Expander Cycle Engines, from https://blogs.nasa.gov/J2X/tag/rl10-rocket-engine/
6 Jeong, E. H., Kang, S. H., Hong, M. G., Lee, H. G., Lee, S. Y., and Kim, J. H., "Turbine Rotor-Pyrostarter Coupled Test for the Verification of Thermo-Structural Suitability of a Turbopump Turbine," Journal of the Korean Society of Propulsion Engineers Spring Conference, May 2013, pp.410-416.
7 Choi, C. H., Hong, S. S., and Kim, D. J., "Development of Pump of Liquid Rocket Engine Turbopumps," Journal of the Korean Society of Propulsion Engineers Fall Conference, December 2014, pp.899-902.
8 NASA, Inside the LEO Doghouse: The Art of Expander Cycle Engines, from https://blogs.nasa.gov/J2X/2014/03/24/inside-the-leo-doghouse-the-art-of-expander-cycle-engines/
9 Hong, S. S., Kim, J. S., Kim, D. J., and Kim, J. H., "Performance Test of Turbopump Assembly for 75 Ton Liquid Rocket Engine Using Model Fluid," Journal of the Korean Society of Propulsion Engineers, Vol. 15, No. 2, 2011, pp.56-61.
10 3D Printing Industry, World's 1st 3D Printed Battery Powered Rocket Engine, from https://3dprintingindustry.com/news/worlds-1st-3d-printed-battery-powered-rocket-engine-47226
11 Simple electric motors Calculations, form http://simplemotor.com/calculations
12 M. Shirvani Boroujeni, G. R. Arab Markadeh, and J. Soltani, "Torque ripple reduction of brushless DC motor based on adaptive input-output feedback linearization," ISA Transactions, Vol. 70, 2017, pp.502-511.
13 Ball Bearing, Angular Contact HY KH 6002 C TA, from https://www.gmnbt.com/bbhy-kh-6002-c-ta-angular-contact-bearing.htm