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|  Stability
T-45A/C TS, E2C2, ADV & IUT Aero-04
III. T-45 Stability (General)
Sg 3, fr 2
Lesson Organization
A.
T-45 Roll Rate
STABILITY
1.
Depends on airspeed
* T-45 Flight Controls
* Stability (Generic)
* T-45 Stability
2.
180 degrees per second can be achieved between
(General)
* Factors Affecting T-45
0.7 and 0.9 Mach
Stability
B.
Longitudinal Control
1.
Below 0.85 Mach the T-45
a.
is highly maneuverable
b.
has predictable flying qualities
c.
Stick forces are moderate and provide good
feedback
2.
Above 0.84 Mach
a.
stick forces become noticeably more sensitive
b.
A region of reduced longitudinal stability exists
within trim AOA band at approximately 0.87 true
Mach number
(1) pilot perceives this as stick force lightening
or pitch up
(2) less than three pounds of stick force can
result in g excursions from +1 to +3g
(3) Excursions are highest at aft CGs
3.
Use caution in high speed dive recoveries to avoid
overstress in the pitch up regions of 0.99 and 0.87
Mach
4.
Pullout at no more than 4.0 g’s and ease the back
pressure in the pitch up regions to maintain a
maximum of 4.0 g’s
Page 4-14
(9-99) Original
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