NASA NTRS · 19860000179
Helicopter Tail-Boom Strakes
Abstract
Yaw control and overall efficiency increased at hover and low speeds. Wind-tunnel investigation showed strake located on left side of tail boom has potential to reduce high adverse side loads on tail boom in hover and in sideward flight. Test demonstrated addition of single long strake to left side of tail boom most effective configuration for reducing left pedal requirements in right sideward flight.
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Kelley, H. L., Phelps, A. E., III, Wilson, J. C.. 1986-06-01. Helicopter Tail-Boom Strakes. https://ntrs.nasa.gov/citations/19860000179
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