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NASA Technical Paper 2256 - CAFE Foundation

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TABLE 9.- PHYSICAL CHARACTERISTICS OF GATES LEARJET MODEL 28/29<br />

Gross weight, ib .............................................................. 15 000<br />

Wing:<br />

Area, ft 2 ................................................................... 274.3<br />

Span, in .................................................................... 506.4<br />

Aspect ratio ................................................................. 6.48<br />

Taper ratio (main wing) ..................................................... 0.39<br />

Root chord (main wing), in .................................................. 112<br />

Tip chord (main wing), in ................................................... 43.8<br />

Mean aerodynamic chord, in .................................................. 83<br />

Twist (washout), deg ........................................................ 0<br />

Dihedral, deg .......<br />

sweep at leading edge, deg ..o ............................................... 17<br />

Winglet (upper):<br />

Length, in .................................................................. 44.9<br />

Root chord, in .............................................................. 28.53<br />

Tip chord, in ............................................................... 9.99<br />

Mean aerodynamic-chord, in .................................................. 20.76<br />

Area (projected vertically), ft 2 ............................................ 6<br />

Aspect ratio (based on vertically projected geometry) ....................... 2.33<br />

Taper ratio ................................................................. 0.35<br />

Sweep at leading edge, deg ................................................... 40<br />

Twist (leading edge outward within lower 40-percent span), deg .............. I<br />

Incidence at root (leading edge toed out), deg .............................. -2<br />

Cant angle (wingle_ tip canted out) ......................................... 15<br />

Airfoil section ................................. LS(I)-0413 thinned to t/c = 0.08<br />

Powerplant:<br />

Manufacturer ..................................................... General Electric<br />

Model<br />

Rated thrust_ {b'_[[_[i_[_[_[[_i_[_i_[[_[[[i[i[_[_[[_[[_[_[[_[_[[_.C. J610-8A2950<br />

69<br />

'I

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