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Slow-Speed Flight, Stall and Spin, and AOA System
T-45A/C TS, E2-C2, ADV & IUT Aero-03
2.
Slotted flaps
Overlay 1
a.
Increase maximum lift coefficient attainable, but
at lower AOA
b.
Extension affects inboard portion of wing more
than outboard portion, causing root to operate
at higher AOA (in degrees) than tip
3.
Leading edge slats
Overlay 2
Sg 1, fr 11
a.
Reduce leading edge vortexing by increasing
Fig 4: Slats
leading edge radius
(1 Overlay)
b.
Increase lift coefficient over the wing at very
Overlay 1
high AOA
NOTE: In conjunction with a slat, an automatic
slot is opened which allows the high pressure,
high energy air from below the wing to flow into
the low pressure area above the wing. This
airflow is directed along the upper surface in
such a manner that it increases the energy and
delays boundary layer separation. See the
NATOPS flight manual for further discussion of
slat operation and malfunctions.
4.
Row of vortex generators on leading edge of each
Sg 1, fr 12
wing
Vortex Generators
a.
Small, low aspect ratio airfoils set perpendicular
to wing surface with a large AOA
b.
Vortices cause high energy free-stream air to
be mixed with low velocity boundary layer air,
reenergizing the boundary layer and delaying
separation
(9-99) Original
Page 3-8


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