22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-1.8.1
EXPERIMENTAL STUDY OF NO TAIL ROTOR (NOTAR) HELICOPTER
Luo X., Zhang C., Wang H.
Nanjing University of Aeronautics and Astronautics, PRC
Keywords: helicopter, tail rotor, notar
In order to study the new anti-torque system on
helicopter circulation control tail boom, two
helicopter models with circulation control
tailboom was designed and tested to measure the
pressure distribution on tail boom surface with
the model in tunnel and under rotor respectively.
The main purpose of the test was to study the
effect of the momentum coefficient, the slot's
geometry variables and the flying velocity on the
aerodynamic forces of the circulation control
tailboom. The aerodynamic forces on the
tailboom have been calculated and their changes
with the circulation control variables were
drawn in curves. By discussing the test results,
circulation control and its application was
studied. Reasonable explanations have been
given about the test results and some new
conclusions have been obtained.
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