adgrp.hlp

MATLAB在飞行动力学和控制中应用的工具

-----------------------------------------------------------------
System BEAVER, subsystem 'Airdata Group'
========================================
The subsystem 'Airdata Group' consists of four masked subsystem
blocks: Atmosph, Airdata1, Airdata2, and Airdata3. The block
Atmosph computes a number of atmospheric properties, Airdata1
computes the basic airdata variables, and Airdata2 and Airdata3
compute additional airdata (-related) variables.

The results from the masked subsystem Atmosph are needed by the
three Airdata blocks, and the results from Airdata1 are needed by
Airdata2 and Airdata3. Therefore, the block Atmosph has been lo-
cated on the upper left side of the subsystem, Airdata1 has been
located in the middle of the subsystem, and Airdata2 and Airdata3
have been located on the lower right side of the subsystem. The
vertical shift is needed in order to be able to connect the out-
putvectors from the different blocks to the Outports on the right
side of the subsystem 'Airdata Group'.

Note: ICAO Standard Atmosphere is used for atmosphere model!

Inputs:
=======
  x = [V alpha beta p q r psi theta phi xe ye H]'        (states)

where:

  V    : true airspeed [m/s]
 {alpha: angle of attack [rad]                                  }
 {beta : sideslip angle [rad]                                   }
 {p    : roll-rate [rad/s]                                      }
 {q    : pitch-rate [rad/s]                                     }
 {r    : yaw-rate [rad/s]                                       }
 {psi  : yaw-angle [rad]                                        }
 {theta: pitch-angle [rad]                                      }
 {phi  : roll-angle [rad]                                       }
 {xe   : X-coordinate, relative to Earth-axes [m]               }
 {ye   : Y-coordinate, relative to Earth-axes [m]               }
  H    : altitude above sea level [m]

The accolades denote states which are not needed by the masked
subsystem blocks in the subsystem 'Airdata Group'.

Outputs:
========
  yatm = [rho ps T mu g]'                  (outputs from Atmosph)
  yad1 = [a M qdyn]'                      (outputs from Airdata1)
  yad2 = [qc Ve Vc]'                      (outputs from Airdata2)
  yad3 = [Tt Re Rc]'                      (outputs from Airdata3)

where:

  rho  : air density [kg/m^3]
  ps   : static pressure [N/m^2]
  T    : air temperature [K]
  mu   : dynamic viscosity [kg/(m*s)]
  g    : acceleration of gravity [m/s^2]

  a    : speed of sound [m/s]
  M    : Mach number [-]
  qdyn : dynamic pressure [N/m^2]

  qc   : impact pressure [N/m^2]
  Ve   : equivalent airspeed [m/s]
  Vc   : calibrated airspeed [m/s]

  Tt   : total temperature [K]
  Re   : Reynolds number per unit length [1/m]
  Rc   : Reynolds number with respect to mean aerodyn. chord [-]


More info:
==========
See ATMOSPH.HLP, AIRDATA1.HLP, AIRDATA2.HLP, and AIRDATA3.HLP for
more info about the blocks from the subsystem 'Airdata Group'.

-----------------------------------------------
The FDC toolbox, Copyright Marc Rauw 1994-1998.