Power (Beaver) computes the engine power and non-dimensional pressure increase across the propeller for the DHC-2 'Beaver' aircraft, using the engine power model from ref.[1]. Power is contained in the subsystem Engine Group of the system Beaver. This subsystem also contains the blocks Engmod (Beaver) and FMdims.
x = [V alpha beta p q r psi theta phi xe ye H]' (states) uprop= [n pz]' (engine inputs) yatm = [rho ps T mu g]' (atmospheric properties, computed in the block Atmosph) V : 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 in Earth-fixed reference frame [m] } {ye : y-coordinate '' '' '' '' [m] } {H : altitude above sea-level [m] } n : engine speed [RPM] pz : manifold pressure ["Hg] 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] }
Variables which are not actually used by Power (Beaver) have been displayed between curly braces.
ypow = [dpt P]' dpt : dimensionless pressure increase across the propeller [-] P : engine power [Nm/s]