Report of the Second Piloted Aircraft Flight Control System - Acgsc.org

A,. Area of bydraullc jack giston.
c, ceJ cn# &S %
Parameters In electrical system nrrrlngcrus to bydmullc
aystsp! vith compensation.
Damping coefficient of mechanical linkages.
f~
fn ~~mping coefficient of bydrau~c agrstcm canpamator.
c Damping factor in hydraulic systsla loed.
pa Bob weight acceleration force.
8 Aoceleratiata of gravity.
H(8) Overall system finetion
h(s) Denanbator polynomial for H.(B)
J(s) *stem function from stick to control 8uriaee.
K Gain constant.
k Spr3.ng constant of prsh rod from stiok to qydrrulla qpd&
kc A-c force spring rate.
k e OF1 oompressibility spripg rate.
KQ Qnirau3.i~ elyatan control valve gain.
k, Spring constent of wraallc qgstam wmpn88tioa nstworlr.
=, Velocity constant.
1 Born we-t mss.
Msc@anicsl linkage mass.
Wp
n, Cantrdl column mass.
Hc EXfectiw mass of elwator.
n, kes of 4pdraul.i~ system ampmeation nstmrk.
n &ad factor.
P Pressure across hydraulic jack.
PI, p2,. . Negative of poles of trandar hnctions.
~[s) Nunrrtrator po- far ~(s).
s 6) ~emdnator polyr~~ndal fool opgl loop trandor hmcticm.
fa
Net rate of flow through bdraulic qpstm aatrol valm.
8 Isplace transform variable
t Timb
Time Lag from stick to cc4rtirol surface.
Tlag
U Average f OM airplene velocity.
5
Inpllt to hydsaulic Iaystmn
=c Output displacement of maulic qstm.
% Valve displaament
Control coluaP diaplauenmt
]b Mechanical linkage displaaaernnt.