Quantcast Induced Drag - P-12870072

 

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Stability
T-45A/C TS, E2C2, ADV & IUT Aero-04
Sg 2, fr 4
B.
Induced Drag
Induced Drag
1.
Product of generating lift
2.
Greater at low airspeeds
C.
Mean Aerodynamic Chord (MAC)
1.
Center of pressure (CP)
a.
Located along sweep angle of wing
Sg 2, fr 5
b.
Determined overall aerodynamic center (AC) of
Mean Aerodynamic
Chord (2 overlays)
aircraft; AC hard to determine for swept wing
aircraft, as are overall pitch
2.
Concept
a.
Treats wing as if it were rectangular in planform,
which makes pitching moments easy to
determing
Overlay 1
3.
Precisely determined as to both location and length
Overlay 2
a.
MAC for T-45 is 69.96 inches
b.
Leading edge of MAC (LEMAC) is 240.9 inches
aft of datum, which is the tip of the nose boom
4.
Center of gravity (CG) computations and limits
normally expressed as % MAC; CG range of T-45 is
14-22% of MAC
5.
Used as primary reference for longitudinal stability
considerations by aerodynamic engineers
(9-99) Original
Page 4-5


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