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

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Presentation on theme: "WRIGHT STUFF. AGENDA INTRODUCTION AIRCRAFT TERMINOLOGY THEORY OF FLIGHT GLIDER DETAILS HINTS EXTRA--STARTING PLANS MAKE A GLIDER."— Presentation transcript:

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 10min (MS)

6 RULES- (CONTD) 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 Newtons 3 laws of Motion Inertia F=ma Action=Reaction Bernoullis Law of fluid flow (1730s) K= ½ mv 2 + PV + mgh (m/V=ρ) K= ½ v 2 + P + gh

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

11 Angle of Incidence

12 ANGLE OF ATTACK

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14 DIHEDRALS

15 WHY DIHEDRALS?

16 GLIDER TAIL

17 TAIL FUNCTION HORIZONTAL STABILIZER-CONTROL PITCH- NOSE UP/NOSE DOWN VERTICAL STABILIZER- CONTROL YAW- LEFT/RIGHT

18 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

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21 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.

22 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 USE ENGINEERING: DESIGN, BUILD,TEST KEEP LOG BOOK AND RECORDS

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28 FLIGHT PATH

29 TROUBLE SHOOTING

30 MORE TS

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32 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%20build ing%20instructions.pdf AMA Gliders www.amaglider.vze.com/ FPG-9 (foam plate glider)

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34 David Braunstein Email: David.Braunstein@csulb.eduDavid.Braunstein@csulb.edu Phone: (562)985-1464


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