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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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Agenda
AGENDA

  • INTRODUCTION

  • AIRCRAFT TERMINOLOGY

  • THEORY OF FLIGHT

  • GLIDER DETAILS

  • HINTS

  • EXTRA--STARTING PLANS

  • MAKE A GLIDER


Objective
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.


Materials
MATERIALS

  • BALSAWOOD. (why?)

  • GLUE – ANY TYPE.

  • MODELING CLAY. (purpose?)

  • PAINT, STICKERS, INK, AND MARKERS MAY BE USED FOR DECO OR ID. (Small areas only)


Rules
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)


Rules cont d
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




Flight theory
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








Tail function
TAIL FUNCTION

  • HORIZONTAL STABILIZER-CONTROL PITCH- NOSE UP/NOSE DOWN

  • VERTICAL STABILIZER- CONTROL YAW- LEFT/RIGHT


Stabilizer sizes
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


Hints
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.


More hints
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





References
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)


David braunstein
David Braunstein


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