From MeritBadgeDotOrg
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| + | '''{{PAGENAME}}''' was first offered in 1941, with [[Aeronautics]], to replace [[Aviation (original)|Aviation]]. It was replaced, along with Aeronautics, by [[Aviation]] in 1952. |
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Revision as of 16:36, September 29, 2012
Aerodynamics merit badge
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Status:
| Discontinued
| BSA Advancement ID:
| none
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Created:
| 1942
| Original/new/replaced:
| Replaced Aviation (original)
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Discontinued:
| 1952
| Replaced by:
| Aviation
|
[[Category:Discontinued {{{group}}} merit badges]]
Aerodynamics was first offered in 1941, with Aeronautics, to replace Aviation. It was replaced, along with Aeronautics, by Aviation in 1952.
Aerodynamics requirements
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- Show that air has weight and pressure, using as an improvised barometer, a sauce dish or pan and a tall cylindrical glass of water; (b) explain variations in air due to altitude, and point out some resulting problems for engines, for flight path hazards, and for the pilot himself.
- Demonstrate Bernoulli's law that air speed reduces pressure, using a spool and a small card, or a tube and a ping pong ball.
- Build a six-inch airfoil wing section of 5-inch chord and high left cambers, and mount and demonstrate with it the principle of lift; (b) Submit with explainations, a rough diagram used in explaining to another Scout the Aeronauticsd Merit Badge outline of the positive forces of Thrust and Lift and the negative forces of Gravity and Drag.
- Build three drag demonstration airfoils of same cross-section width - cube, cylinder, "streamline" - using a cylindrical oatmeal box, some cardboard, paper and glue; (b) improvise small easy-rolling 4-wheel support to demonstrate air resistance of the airfoils in an air current.
- Build and demonstrate the use of small, simple wind tunnel to provide controlled air current; OR build and demonstrate a simple air speed measuring device.
- Build a rubberband powered flying model airplane of some type new to the builder, and fly in some competition. (Kit may be used.)
- Draw rough side-view outline of monoplane and use in explaining the "angle of attack" (British - angle of incidence); (b) demonstrate why an air stream action enables "control surfaces" to control the direction of the plane; (c) review what stick-and-pedal-action alters which control surfaces.
- Indicate six or more ways for a pilot, about to land, to identify wind direction; (b) explain the relative plus and minus air speed advantages of taking-off and landing into the wind; (c) explain the aerodynamics of stalling.
- Test the relative speeds in an air current of two propellers of approximately the same diameter qnd blade area, but of different pitch; (b) point out the advantages of the modern variable pitch propeller.
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Notes
- This merit badge was part of the Air Explorer program during World War II.
See also
External links