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Looking at the Physics of STOL Drag

Racing circuit's airplanes requires starting and stopping twice while flying less than a mile.

High wings and a tailwheel are taken for granted on STOL airplanes for a lot of practical reasons. [Leonardo Correa Luna]
Gemini Sparkle

Key Takeaways:

  • STOL Drag racing is a unique aviation competition where pilots quickly take off, fly a 2,000-foot course, land, come to a full stop, turn around, and repeat the process, with the objective of completing two legs in the shortest possible time.
  • Success in STOL Drag hinges on extreme acceleration and powerful, precise deceleration, requiring pilots to master techniques like aggressive slipping and early wheel braking for maximum stopping power.
  • Competitors typically use highly modified, lightweight aircraft featuring turbocharged engines and large propellers for rapid takeoff and powerful braking, demanding significant pilot skill to consistently achieve fast times.
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At a point in my meandering journalistic career, I found myself behind the wheel of a Porsche 911 Turbo on a Southern California racetrack. One of the turns was a 90-degree elbow of essentially zero radius that came at the end of a long straightaway on which the sports car would reach 120 mph or so. The problem—which resembled the game of chicken in the 1955 film Rebel Without a Cause and which I was shamefully slow to master—was to use maximum braking just in time to arrive at nearly zero speed right at the corner, but not a moment sooner.

Slowing down matters as much as accelerating in most auto racing, and the same is true of STOL Drag racing. Unlike traditional Reno-style pylon racing, which involves no slowing down whatsoever, STOL Drag requires starting and stopping twice while flying less than a mile.

Peter Garrison

Peter Garrison taught himself to use a slide rule and tin snips, built an airplane in his backyard, and flew it to Japan. He began contributing to FLYING in 1968, and he continues to share his columns, ""Technicalities"" and ""Aftermath,"" with FLYING readers.

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