TABLE I NASA GA(W)-2 MEASURED AIRFOIL COORDINATES

e •« 61.01

x/c

0.0 .00199 .00498 .01246

NEW FROM NASA . . . THE GA(W)-2 AIRFOIL

.02498 .03747 .04996

NASA has completed tests and is now publishing information on the new GA(W)-2 airfoil. This 3M thick airfoil shows increased max £ and L/D ratio over the

IT7( GA(W)-1 airfoil while retaining the same stall characteristics. The preliminary report is NASA TM X-72697 (Order Number N75-24678) entitled "Low Speed Aerodynamic Characteristics of a 13% Thick

.02365 .03304

-.01870

.05230

-.02904

.09992 .12490 .14988

.05831

-.03246 -.03528

.06323

.07609

.62448

.07342 .07035 .06688 .06305 .05890 .05446

.74938 .77435

-.04471 -.04508 -.04475 -.04363 -.04149 -.03803

.08441 .08425 .08294

.59950

.72440

-.04129 -.04353

.07857 .08171 .08357

.08025 .07835

.67444

-.03769 -.03966

.06731 .07080 .07381

.54954 .57452

.69942

-.03582 -.03326 -.03048 -.02745 -.02428

-.02107 -.01783

-.01460 -.01145

.79933

.04974 .04476

.82431

.03956

.84929

.03417

-.00851 -.00587 -.00357

.87427

.02864 .02296

-.00187 -.00086

.01712 .01112 .00497

-.00143 -.00377

.89925 .92423 .94921 .97419 .99917 1.0

Figure I Section Shape for NASA GA(W)-2 Airfoil

-.00486' -.00847 -.01385

.07494

.64946

Airfoil Section Designed for General Aviation Application". This report is available from the National Technical Information Service, Springfield, Virginia 22161. Cost is $4.25. The final report is to be published in late 1975.

(z/c)

lower 0.0

-.02196 -.02465

.19983 .24980 .29975 .34971 .39967 .44963 .49958

La Mesa, California 92041

(z/c) upper 0.0 .00922 .01481 .03957 .04460

.17485

By Don Wextergren (EAA 423871 3942 Calavo Dr.

cm (24.02 inches)

-.00052

.00143

-.00720 -.00732

.00164

.2

I .4

.5 x/c

.9

SPORT AVIATION 55

1.0