Powerpoint idea2
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Design Idea #2: High Range Wind Instrument • Closed-end Pan Flute made from ¾ inch EMT • 16 individual pipes, each cut at different lengths to correspond to desired note • Dimensions: • longest pipe = 28.6 cm, shortest pipe = 11.7 cm; total width = 30.48 cm. Phot credit: https://i.ytimg.com/vi/cGe29KNHdzA/maxresdefault.jpg
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Transcript of Powerpoint idea2
Design Idea #2: High Range Wind Instrument
• Closed-end Pan Flute made from ¾ inch EMT • 16 individual pipes, each cut at different lengths
to correspond to desired note • Dimensions: • longest pipe = 28.6 cm, shortest pipe = 11.7 cm;
total width = 30.48 cm.Phot credit: https://i.ytimg.com/vi/cGe29KNHdzA/maxresdefault.jpg
Design Features
• Pipes are hot glued together.• A is placed at end of each pipe
to close instrument.• Sleek finish
3. Underlying Physics of Design
Note Range Frequency Tube Length (cm)
Conduit Length (cm) Accounting for End Effect; inner radius = 1.05 cm
D D4 293.66 29.2 28.6D#/Eb D#4 311.13 27.6 26.9E E4 329.63 26 25.4 F F4 349.23 24.6 24F#/Gb F#4 369.99 23.2 22.6G G4 391.99 21.9 21.3G#/Ab G#4 415.3 20.6 20A A4 440 19.5 18.9A#/Bb A#4 466.16 18.4 17.8B B4 493.88 17.4 16.8C C5 523.25 16.4 15.8C#/Db C#5 554.37 15.5 14.9D D5 587.33 14.6 14D#/Eb 622.25 13.8 13.2E E5 659.26 13 12.4F F5 698.46 12.3 11.7
Total Length = 304.3
Equation: L = n * v / 4 * f
4. Design #2 Justification
• Within 10 ft. pipe requirement. • Low cost & Accessible Materials• Total cost under $5. • Similar technologies: PVC, bamboo, other woods
