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Drag on aircraft- Is this sensible?

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Old   October 30, 2018, 11:05
Default Drag on aircraft- Is this sensible?
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Hi everyone,

I'm using Fluent to determine the drag on an aircraft. Fluid flow is set at 16.3 m/s and the cd result i get is 0.017785, and a drag force of 3.218N. In power terms this is 52.45W.

The total thrust force for the aircraft is 8.34N and hence 133W at 16.3m/s.

This means that the drag is equivalent to 52.45/133*100 = 39.4% of the total thrust. This appears to be huge to me and I would like to know if this appears to be sensible.

For reference, the aircraft is shaped like the 'B-2 spirit' bomber, and hence is relatively steamlined.

Any assistance would be appreciated. Thanks!
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Old   October 31, 2018, 06:10
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you can read more about thrust to drag ratio in aircraft performance look at the book
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aircraft, drag, fluent, power, thrust

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