WRIGHT STUFF

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WRIGHT STUFF
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AGENDA

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

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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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MATERIALS

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

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RULES

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

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RULES- (CONTD)

• NOSE HOOK FOR LAUNCHING GLIDER A MUST.
• CATAPAULT WILL BE PROVIDED
• LAUNCH RELEASE Ht6 ft. max
• 3 LAUNCHES- 2 BEST COUNTED
• MS- DISTANCE
• HS-Time of flight

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4 FORCES OF FLIGHT
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AXIS OF ROTATION
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FLIGHT THEORY

• Newtons 3 laws of Motion
• Inertia
• Fma
• ActionReaction
• Bernoullis Law of fluid flow (1730s)
• K ½ mv2 PV mgh
• (m/V?)
• K ½ rv2 P rgh

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Tot. EKinetic E pressure potential E
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Angle of Incidence
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ANGLE OF ATTACK
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DIHEDRALS
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WHY DIHEDRALS?
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GLIDER TAIL
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TAIL FUNCTION

• HORIZONTAL STABILIZER-CONTROL PITCH- NOSE UP/NOSE
  DOWN
• VERTICAL STABILIZER- CONTROL YAW- LEFT/RIGHT

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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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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.

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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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FLIGHT PATH
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TROUBLE SHOOTING
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MORE TS
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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/Aery20building20inst
  ructions.pdf
• AMA Gliders
• www.amaglider.vze.com/
• FPG-9 (foam plate glider)

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David Braunstein

• Email David.Braunstein_at_csulb.edu
• Phone [phone]