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| T-45A/C TS, E2-C2, ADV & IUT Aero-03
Slow-Speed Flight, Stall and Spin, and AOA System
c.
Modes
Sg 2, fr 55
(1) Low speed
Fig 12: Inverted Spins
Steady-State Indications
(a) -60-degree true AOA
(2 overlays)
Nose 30 to 50 degrees below horizon;
may see horizon; 3-4 seconds per turn
or 15-20 turns per minute; altitude loss
of 1,000 ft per turn or 15-20,000 fpm,
airspeed of 50-120 KIAS (see fig 12)
Overlay 1
(b) -40-degree true AOA
Nose 30 to 50 degrees below horizon;
probably will not see horizon; 3-4
seconds per turn or 15-20 turns per
minute; altitude loss of 1,000 ft per turn
or 15-20,000 fpm airspeed of 100-160
KIAS (see fig 12)
(2) High speed
Overlay 2
(a) -25-degree true AOA
Nose 65 degrees below horizon; will
not see horizon; 6 seconds per turn or
10 turns per minute; altitude loss of
1,100 ft per turn or 11,000 fpm
airspeed of 140-200 KIAS (see fig 12)
d.
Steady-state indications
(1) Negative g
(2) Pegged turn needle (in direction of spin)
Sg 2, fr 56
Fig 7: Stall Progression
(3) Zero units AOA
Diagram
(9-99) Original
Page 3-23
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