
returns to level flight conditions at a reduced altitude. To illustrate, suppose the pilot’s action results
in an elevator de flection of D
^
d
e
degree for a perio d of T
pulse
s. The aircraft’s altitude response to the
pulse input in elevator deflection is obtained as the difference between the step response and the
delayed step respon se, that is,
Dz
p
(t) ¼ D
^
d
e
Dz
1
(t) D
^
d
e
Dz
1
(t T
pulse
)
^
u(t T
pulse
)(4:769)
where
Dz
1
(t) is the change in altitud e response to a unit step elevator deflection
^
u(t T
pulse
) is the unit step function starting at t ¼T
pulse
Dz
p
(t) is the change in altitude response to a pulse elevator deflection of D
^
d
e
deg lasting T
pulse
s
For