A hydrofoil 50 cm long and 4 m wide moves at 28 kn in seawater at 20°C.

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A hydrofoil 50 cm long and 4 m wide moves at 28 kn in seawater at 20°C. Using flat-plate theory with Retr = 5E5, estimate its drag, in N, for (a) a smooth wall and (b) a rough wall, ε = 0.3 mm.

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Essential University Physics

ISBN: 978-0321976420

3rd Edition Volume 2

Authors: Richard Wolfsonby

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Question Posted: Jan 16, 2010 04:30 AM

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A hydrofoil 50 cm long and 4 m wide moves at 28 kn in seawater at 20°C.

Question:

28 knots L=50cm

Step by Step Answer:

For seawater at 20C take 1025 kgm3 and 000107 kgm s Convert 28 knots ...View the full answer

Essential University Physics

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