📄 airdata2.htm
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FDC help: Airdata2
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<h2>
Subsystem <i>Airdata2</i>
</h2>
<p><i>Airdata2</i> computes the impact
pressure <i>q<sub>c</sub></i>, equivalent airspeed <i>V<sub>e</sub></i>,
and the calibrated airspeed <i>V<sub>c</sub></i>. The block <i>Airdata2</i>
is contained in the subsystem <i><a href="adgrp.htm">Airdata Group</a></i>
of the <i><a href="beaver.htm">Beaver</a></i> model. Other airdata
(-related) variables are computed in the blocks <i><a href=
"atmosph.htm">Atmosph</a></i>, <i><a href="airdata1.htm">Airdata1</a></i>,
and <i><a href="airdata3.htm">Airdata3</a></i>, which also contained in the
subsystem <i>Airdata Group</i>.</p>
<h3>
Inputvectors: <i>yatm</i> and <i>yad1</i>
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<pre>
yatm = [rho ps T mu g]' (atmospheric properties, computed in
the block <a href=
"atmosph.htm">Atmosph</a>)
yad1 = [a M qdyn]', (speed of sound, Mach number, dynamic
pressure, computed in the block <a href=
"airdata1.htm">Airdata1</a>)
{rho : airdensity [kg/m^3] }
ps : static pressure [N/m^2]
{T : 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]
</pre>
<p>The inputvariables which are not actually used by <i>Airdata2</i> have been
displayed between curly braces.</p>
<h3>
Outputvector: <i>yad2</i>
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<pre>
yad2 = [qc Ve Vc]'
qc : impact pressure [N/m^2]
Ve : equivalent airspeed [m/s]
Vc : calibrated airspeed [m/s]
</pre>
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