blwind.hlp

MATLAB在飞行动力学和控制中应用的工具

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BLWIND is a masked subsystem block, contained in the FDC libra-
ry WINDLIB. It calculates velocity components of a horizontal
wind along the body-axes of the aircraft, where the wind velocity
and direction may change along the flight path as a function of
altitude. The 'BL' in BLWIND denotes that the wind profile is
valid in the Boundary Layer of the Earth. However, BLWIND can be
used too for implementing wind shears at other altitudes.

The user must specify the wind profile by changing two functions:

  wind velocity function; expresses Vw as a function of H,
  wind direction function; expresses psi_w as a function of H.

where:

  Vw   : wind velocity [m/s]
  psi_w: wind direction [rad]

Note: if the wind is blowing to the north, psi_w should be