Types of Wind Tunnels

Full Scale / Full Geometry

• NASA Glenn 10’ x 10’ Supersonic (estimated test cost $2000/hr)
• NASA Ames 80’ x 120’ Subsonic (estimated test cost $1000/hr)

Sub-Scale / Single Component

• NASA Glenn 20” x 30” Low Speed (estimated test cost $2/hr)

>How does one scale a model?

• Geometric (10% - 20% - full scale)
• Dynamic (e.g. Reynolds Number, Re = r * U * L / mu)

Slide 32

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