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WRIGHT STUFF

WRIGHT STUFF. AGENDA. INTRODUCTION AIRCRAFT TERMINOLOGY THEORY OF FLIGHT GLIDER DETAILS HINTS EXTRA--STARTING PLANS MAKE A GLIDER. OBJECTIVE. TO DESIGN AND CONSTRUCT A BALSAWOOD GLIDER THAT WILL HAVE THE LONGEST DISTANCE (ms) OR FLIGHT TIME (hs) WHEN LAUNCHED FROM A HAND HELD CATAPULT.

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WRIGHT STUFF

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  1. WRIGHT STUFF

  2. AGENDA • INTRODUCTION • AIRCRAFT TERMINOLOGY • THEORY OF FLIGHT • GLIDER DETAILS • HINTS • EXTRA--STARTING PLANS • MAKE A GLIDER

  3. OBJECTIVE • TO DESIGN AND CONSTRUCT A BALSAWOOD GLIDER THAT WILL HAVE THE LONGEST DISTANCE (ms) OR FLIGHT TIME (hs) WHEN LAUNCHED FROM A HAND HELD CATAPULT.

  4. MATERIALS • BALSAWOOD. (why?) • GLUE – ANY TYPE. • MODELING CLAY. (purpose?) • PAINT, STICKERS, INK, AND MARKERS MAY BE USED FOR DECO OR ID. (Small areas only)

  5. RULES • NO READY MADE KITS. • GLIDER WITH CLAY BALLAST • 1:1 DRAWING WITH ISOMETRIC AND PLAN VIEWS- Computer Aided Design (CAD) AND HAND DRAWN PERMITTED (hs) • WING SPAN 10”min (MS)

  6. RULES- (CONT’D) • NOSE HOOK FOR LAUNCHING GLIDER A MUST. • CATAPAULT WILL BE PROVIDED • LAUNCH RELEASE Ht=6 ft. max • 3 LAUNCHES- 2 BEST COUNTED • MS- DISTANCE • HS-Time of flight

  7. 4 FORCES OF FLIGHT

  8. AXIS OF ROTATION

  9. FLIGHT THEORY • Newton’s 3 laws of Motion • Inertia • F=ma • Action=Reaction • Bernoulli’s Law of fluid flow (1730’s) • K= ½ mv2 + PV + mgh (m/V=ρ) • K= ½ rv2 + P + rgh

  10. Tot. E=Kinetic E + pressure + potential E

  11. Angle of Incidence

  12. ANGLE OF ATTACK

  13. DIHEDRALS

  14. WHY DIHEDRALS?

  15. GLIDER TAIL

  16. TAIL FUNCTION • HORIZONTAL STABILIZER-CONTROL PITCH- NOSE UP/NOSE DOWN • VERTICAL STABILIZER- CONTROL YAW- LEFT/RIGHT

  17. STABILIZER SIZES • OUTDOORS- • HORIZONTAL-1/5 AREA OF WING • VERTICAL-1/3 TO 1/2 OF HORIZONTAL • INDOORS- • HORIZONTAL-1/6 TO 1/8 WING AREA • VERTICAL- 1/3 TO ½ OF HORIZONTAL

  18. HINTS • READ RULES THOROUGHLY. • NO SQUARE EDGES. • STABILIZERS SMALL BUT NOT TO THE POINT OF INSTABILITY • CENTER OF GRAVITY OF FINISHED GLIDER IS 1/3 TO ½ FROM THE FRONT EDGE OF THE WING. • TAPERED BOOM. • OUTDOORS USE GLIDERS HEAVIER THAN 10 GRAMS.

  19. MORE HINTS • FUSELAGE LENGTH EQUAL TO OR SLIGHTLY LONGER THAN WINGSPAN • WING LOADING RATIO= GLIDER WEIGHT/WING AREA LOWER IS BETTER. • CIRCULAR FLIGHT PATTERN (ToF) • USE ‘TOOLS’ and ‘JIGS AND FIXTURES’ FOR DIHEDRALS, ETC. • TEST DIRECTION and ANGLE OF LAUNCH • USEENGINEERING: DESIGN, BUILD,TEST • KEEP LOG BOOK AND RECORDS

  20. FLIGHT PATH

  21. TROUBLE SHOOTING

  22. MORE TS

  23. REFERENCES • A little Balsa Glider with a Good Yield www.4p8.com/eric.brasseur/glider2.html • Aery Glider ‘Quick Build’ Instructions www.eng.cam.ac.uk/...glider/Aery%20building%20instructions.pdf • AMA Gliders www.amaglider.vze.com/ • FPG-9 (foam plate glider)

  24. David Braunstein • Email: David.Braunstein@csulb.edu • Phone: (562)985-1464

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