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Hacker Chronicles 2
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754.OUTPUT.ST1
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1992-06-20
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PROP SAMPLE RUN #1: GREAT AMERICA PROP, CONTINENTAL O200, VARIEZE DRAG DATA
CONTROL
IOPT=1,2,3
NPAYOFF=2
IPT=2
END
DESLIM
DLIM=50 100
PITLIM= 50 100
END
DESVAR
DIAM=56 PITCH=68 NB=2
RPMREF=2400
END
PROP OPTIMIZER PROGRAM
Copyright 1992 Donald R Bates/BATES ENGINEERING
2742 Swansboro Road, Placerville, CA 95667
Phone/FAX 916-622-1886
>>>> INITIAL DESIGN:
PROPELLER DESIGN PERFORMANCE
NUMBER OF BLADES = 2 VELOCITY, MPH = 140.988
DIAMETER, INCHES = 56.0000 ALTITUDE, FEET = 8500.00
PITCH, INCHES = 68.0000 DENSITY, SLUGS = 0.183979E-02
BLADE ACTIVITY FACTOR= 98.5670 THRUST, POUNDS = 68.8342
TOTAL ACTIVITY FACTOR= 197.134 DRAG, POUNDS = 68.8341
ADVANCE RATIO, J = 1.10776 THRUST HP = 29.7793
PITCH ANGLE DEG @75%R= 27.2647 HP REQUIRED = 34.2669
BLADE ALPHA DEG @75%R= 2.08418 HP AVAILABLE = 63.9673
THRUST COEF, CT = 0.493047E-01 PROPELLER RPM = 2400.00
POWER COEF, CP = 0.628486E-01 ENGINE RPM = 2400.00
EFFICIENCY, ETA = 0.869041 REDUCT FACTOR = 1.00000
COMPRESS LOSS FACTOR = 1.00000 SFC, LB/HP/HR = 0.603000
EQUIVALENT CNST CHORD= 3.53830 MILES/GALLON = 40.9394
SPEED OF SOUND, FPS = 1083.31 FUEL FLOW, PPH = 20.6630
TIP SPEED, FPS = 621.820 FUEL FLOW, GPH = 3.44383
TIP MACH NUMBER = 0.573998 CAFE SCORE = 3108.48
STA FRACTION SHAPE FACTOR BLADE STATION BLADE CHORD CHORD ANGLE
OF RADIUS ON ECC INCHES INCHES DEGREES
0.2000 1.272 5.600 4.500 62.64
0.3000 1.272 8.400 4.500 52.18
0.4000 1.413 11.20 5.000 44.02
0.5000 1.464 14.00 5.180 37.71
0.6000 1.422 16.80 5.030 32.79
0.7000 1.309 19.60 4.630 28.91
0.8000 1.114 22.40 3.940 25.79
0.9000 0.8394 25.20 2.970 23.24
1.000 0.5087 28.00 1.800 21.13
FIXED PITCH STATIC PERFORMANCE
SURFACE ALTITUDE FT = 0.000000 STATIC THRUST LB = 169.907
STATIC PROPELLER RPM = 2465.51 THRUST HP = 89.6860
STATIC ENGINE RPM = 2465.51 HP REQUIRED = 89.6860
HP CORRECTION FACTOR = 1.00000 HP AVAILABLE = 89.6860
PROP SAMPLE RUN: GREAT AMERICA PROP, CONTINENTAL O200, VARIEZE DRAG DATA
>>>> OPTIMIZED DESIGN:
VARIABLE INITIALLY OPTIMIZED LOWER LIMIT UPPER LIMIT OPTION FLAG
AFTOT 197.134 300.000 140.000 1100.00 IOPT( 1)= 1
DIAM 56.0000 60.3022 50.0000 100.000 IOPT( 2)= 2
PITCH 68.0000 79.7645 50.0000 100.000 IOPT( 3)= 3
PROPELLER DESIGN PERFORMANCE
NUMBER OF BLADES = 2 VELOCITY, MPH = 175.809
DIAMETER, INCHES = 60.3022 ALTITUDE, FEET = 8500.00
PITCH, INCHES = 79.7645 DENSITY, SLUGS = 0.183979E-02
BLADE ACTIVITY FACTOR= 150.000 THRUST, POUNDS = 107.034
TOTAL ACTIVITY FACTOR= 300.000 DRAG, POUNDS = 107.034
ADVANCE RATIO, J = 1.28281 THRUST HP = 56.6560
PITCH ANGLE DEG @75%R= 29.3095 HP REQUIRED = 63.9673
BLADE ALPHA DEG @75%R= 0.743799 HP AVAILABLE = 63.9673
THRUST COEF, CT = 0.570200E-01 PROPELLER RPM = 2400.00
POWER COEF, CP = 0.825849E-01 ENGINE RPM = 2400.00
EFFICIENCY, ETA = 0.885702 REDUCT FACTOR = 1.00000
COMPRESS LOSS FACTOR = 1.00000 SFC, LB/HP/HR = 0.603000
EQUIVALENT CNST CHORD= 5.79829 MILES/GALLON = 27.3475
SPEED OF SOUND, FPS = 1083.31 FUEL FLOW, PPH = 38.5723
TIP SPEED, FPS = 682.099 FUEL FLOW, GPH = 6.42871
TIP MACH NUMBER = 0.629642 CAFE SCORE = 3347.81
STA FRACTION SHAPE FACTOR BLADE STATION BLADE CHORD CHORD ANGLE
OF RADIUS ON ECC INCHES INCHES DEGREES
0.2000 1.272 6.030 7.374 64.65
0.3000 1.272 9.045 7.374 54.44
0.4000 1.413 12.06 8.194 46.33
0.5000 1.464 15.08 8.489 39.98
0.6000 1.422 18.09 8.243 34.98
0.7000 1.309 21.11 7.587 31.00
0.8000 1.114 24.12 6.457 27.78
0.9000 0.8394 27.14 4.867 25.15
1.000 0.5087 30.15 2.950 22.96
FIXED PITCH STATIC PERFORMANCE
SURFACE ALTITUDE FT = 0.000000 STATIC THRUST LB = 124.193
STATIC PROPELLER RPM = 1536.56 THRUST HP = 48.0056
STATIC ENGINE RPM = 1536.56 HP REQUIRED = 48.0056
HP CORRECTION FACTOR = 1.00000 HP AVAILABLE = 48.0056
CONSTRAINT VALUES ARE A MEASURE OF THE DEGREE OF OPTIMIZATION.
EQUALITY CONSTRAINTS ARE SATISFIED WHEN = 0
INEQUALITY CONSTRAINTS ARE SATISFIED WHEN => 0
TYPE: EQUALITY = 0, UPPER BOUND = 1, LOWER BOUND = -1
SYSTEM CONSTRAINT VALUES:
NAME TYPE ACTIVE INACTIVE
HPREQ 0 0.3469E-06
AFBMAX 1 0.0000
PAYOFF=-1.760 (-VEL) NRUN= 50 NC= 2 NEC= 1