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

2. Summary 1.How does HPR differ from model rocketry? 2.Some design guidelines for HPR 3.Something on payloads 4.Examples of HPR Still images... Videos...HARDWARE! 5.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 1.(L/D) between 10 and 35 2.15 < C N <30 3.Subsonic flight. 4.‘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 alignment Fin Long. loading Fin Lat. loading

15. Structure (2) Coupling sections of rocket

16. Recovery

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

18. HPR Payloads

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

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.comwww.garvspace.com Mojave, USA, 2005

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

31. Recap 1.How does HPR differ from model rocketry? 2.Some design guidelines for HPR 3.Something on payloads 4.Examples of HPR Still images... Videos...HARDWARE! 5.Amateur rocketry 6.Who can help? – www.ukra.org.uk www.ukra.org.uk

32. October 28 th, 2021