Calculating Drag Increase with Airbrake: Semi Span

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SUMMARY

The discussion clarifies that "semi span" refers definitively to half the wing span in the context of calculating drag increase due to an airbrake. The formula for drag increase requires this specific measurement to ensure accurate calculations. Participants confirmed that the correct interpretation of semi span does not involve subtracting fuselage width from the total wing span.

PREREQUISITES
  • Understanding of aerodynamic principles
  • Familiarity with drag calculations in aviation
  • Basic knowledge of wing design terminology
  • Experience with airbrake functionality and its effects on flight
NEXT STEPS
  • Research aerodynamic drag coefficients for various airbrake designs
  • Learn about the impact of wing span on aircraft performance
  • Explore advanced drag calculation methods in fluid dynamics
  • Study the effects of airbrakes on different aircraft types
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Aerospace engineers, aviation students, and anyone involved in aircraft design and performance analysis will benefit from this discussion.

Pulp
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I need to calculate the increase in drag due to an airbrake, however the formula includes "semi span". I'm unsure if this is simply wing span/2 or is it the length of a wing in which case it would be (wing span - fuse width)/2. Any help would be good.
 
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Semi span is half the wing span.
 

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