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Introduction to high power rocketry

This introduction to high power rocketry by Dr. Adam M. Baker explores the differences between HPR and model rocketry, design guidelines, payload considerations, and showcases examples of HPR projects. Discover essential safety information, hardware recommendations, and where to seek assistance. Explore the world of amateur rocketry through still images, videos, and insights into HPR construction materials and components.

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Introduction to high power rocketry

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  1. Introduction to high power rocketry Dr. Adam M Baker

  2. Summary • How does HPR differ from model rocketry? • Some design guidelines for HPR • Something on payloads • Examples of HPR • Still images... Videos...HARDWARE! • Amateur rocketry www.ukra.org.uk

  3. HPR v. Model rockets (1)

  4. HPR v. Model rockets (2) • ESTES • Aerotech K550W

  5. HPR v. Model rockets (3)

  6. HPR v. Model rockets (4) • Models • Paper • Balsa • Plastic • HPR • Metals e.g. Aluminium • CFRP • Phenolic tubing

  7. HPR v. Model rockets (5) • Mass, Size • Motors • Trajectory • Materials, components SAFETY

  8. Where can I get help? • UK Rocketry Association • www.ukra.org.uk • Rules, regs , lots of ‘experts’ • ESSENTIAL for launch • Rockets ‘n’ Things • Malcolm Jennings • Main supplier in Southern England for HPR parts • www.rocketsandthings.com

  9. Guidelines For HPR design

  10. Stability (1) • Defined by Barrowman equations • Cp v. Cg, or • ‘Static margin’ http://my.execpc.com/~culp/rockets/Barrowman.html http://www.apogeerockets.com/downloads/pdfs/barrowman_report.pdf

  11. Stability (2) • Barrowman • Slender body theory • (L/D) between 10 and 35 • 15 < CN <30 • Subsonic flight. • ‘Thin’ cross-section fins. • Velocity • Min 20m/s for fins to act • Or 50m/s2 acceleration (4m launch tower / rail) • 6:1 T:W on launch • Static stability margin • 1.5-2.5 calibres

  12. Launch ramp / tower / rail

  13. Motor mounting

  14. Structure Fin Lat. loading Fin alignment Fin Long. loading

  15. Structure (2) • Coupling sections of rocket

  16. Recovery

  17. Recovery (2) • Redundancy • Test TestTest! • Tracking

  18. HPR Payloads

  19. Payloads (1) • Accelerometer / altimeter • E.g. • G-Wiz • P-Nut • Flight computer • E.g. R-DAS Credit: Richard Osborne http://www.aedelectronics.nl/rdas/

  20. Payloads (2) • Altimeter / recovery • Cameras Credit: Richard Osborne ‘GoPro.com’ video cameras

  21. Payloads (3) Credit: Richard Osborne

  22. Examples of HPR

  23. AspireSpace, ASRV-1a Thetford 1997 K-class motor , 1250Ns 2.1m long, 100mm diam. 5000ft apogee

  24. BURT Bristol Uni Rocket Team 1999 NRC runner-up

  25. 2000 • Teams from • Manchester (UMIST) • Kent • Kingston

  26. M.A.R.S. 2000 USA 25,000ft, a UK record

  27. ‘Amateur’ rocketry

  28. AspireSpace, Comer (Scotland) & Lincs 2001, 2002

  29. Garvey Aerospace www.garvspace.com Mojave, USA, 2005

  30. Flometrics / San Siego State University www.flometrics.com Mojave, USA, 2005

  31. Recap • How does HPR differ from model rocketry? • Some design guidelines for HPR • Something on payloads • Examples of HPR • Still images... Videos...HARDWARE! • Amateur rocketry • Who can help? • www.ukra.org.uk

  32. October 28th, 2021

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