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Powerpoint idea2
1. 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
2. Design Features
• Pipes are hot glued together.
• A is placed at end of each pipe to
close instrument.
• Sleek finish
3. 3. Underlying Physics of Design
Pan Flute made from 1/2inch PVCwith one closed end
Equation: L = n * v / 4*f
L = length of tube; n = mode; v = speed of sound; f =
frequency
Speed of Sound: 343 m/s
End Effect = L - .61r; r = inner radius
Note Range Frequency Tube Length (cm)
Conduit Length (cm)
Accounting for End
Effect; inner radius =
1.05 cm
D D4 293.66 29.2 28.6
D#/Eb D#4 311.13 27.6 26.9
E E4 329.63 26 25.4
F F4 349.23 24.6 24
F#/Gb F#4 369.99 23.2 22.6
G G4 391.99 21.9 21.3
G#/Ab G#4 415.3 20.6 20
A A4 440 19.5 18.9
A#/Bb A#4 466.16 18.4 17.8
B B4 493.88 17.4 16.8
C C5 523.25 16.4 15.8
C#/Db C#5 554.37 15.5 14.9
D D5 587.33 14.6 14
D#/Eb 622.25 13.8 13.2
E E5 659.26 13 12.4
F F5 698.46 12.3 11.7
Total Length = 304.3
Equation: L = n * v / 4 * f
4. 4. Design #2 Justification
• Within 10 ft. pipe requirement.
• Low cost & Accessible Materials
• Total cost under $5.
• Similar technologies: PVC, bamboo, other woods