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Technical Data Remos GX ERCO Ercoupe Allegro 2007 IKARUS C42 Cheetah XLS

MTOW=Maximum take-off Weight/kg 598.74 572.00 598.74 473.00 560.00

Sw=Reference wing area/m2 10.96 13.20 11.40 17.10 13.19

P=Total net power output/kW 74.00 56.00 74.00 75.00 64.00

MLW=Maximum landing Weight/kg 558.84 525.80 566.36 424.39 512.60

BOW=Basic operating Weight/kg 370.00 364.00 378.75 265.00 346.00

WMPAY=Maximum payload Weight/kg 295.00 265.00 305.27 231.00 284.86

WMFUEL=Maximum fuel capacity Weight/kg 57.00 66.00 46.27 69.45 67.72

b=Wing span/m 9.33 9.14 10.80 10.98 9.60

LAPX=Longitudinal distance from forward fuselage nose to wing

apex/m2.52 1.44 2.16 1.76 1.99

LFUSE=Length of fuselage body/m 6.49 6.09 7.69 6.71 5.67

CFPNL=chord length of flap panel(at base and tip)/m 0.28 0.28 0.26 0.31 0.51



CFLCL=chord length of wing planform(at flap base and tip)/m 1.21 1.50 1.12 1.43 1.83

bFPNL=span of flap panels(from tip to tip)/m 4.85 4.73 5.53 5.20 5.07

CAPNL=chord length of aileron panel(inboard and outboard)/m 0.19 0.33 0.26 0.31 0.38

CALCL=chord length of wing planform(at aileron inboard and

outboard)/m1.03 1.57 0.86 1.50 1.64

bAPNLO=span of aileron panels(from outboard tip to tip)/m 9.23 7.19 10.37 9.63 8.68

bAPNLI=span of aileron panels(from inboard root to root)/m 4.85 2.40 5.53 5.41 5.07

SAPNL=Total aileron panel area/m2

0.77 1.62 0.63 1.25 0.74

DVERT=Maximum vertical diameter of fuselage/m 1.40 1.32 1.21 1.35 1.62

LEMP=Length defined as from quarter chord of reference wing

MAC to quarter chord of empennage MAC/m4.01 3.77 4.75 3.77 3.51

SEMP=reference empennage area/m2

3.14 2.22 4.40 3.80 2.65

MAC=reference wing mean aerodynamic chord/m 1.04 1.43 0.88 1.39 1.72

SRUDC="clean" rudder area/m2

0.21 0.17 0.22 0.37 0.13



SRUD=rudder area/m2

0.23 0.29 0.47 0.74 0.22

CEPNL=chord length of empennage panel(at base and tip)/m 0.19 0.36 0.17 0.70 0.52

CELCL=chord length of empennage surface(at surface base and

tip)/m0.56 0.75 0.60 0.96 1.19

bEPNL=span of empennage panel(from base to tip)/m 1.35 2.20 1.21 1.57 2.22

bEPMP=span of empennage surface(root to tip)/m 1.35 1.24 1.08 1.65 1.15

SEPNL=empennage panel area/m2

0.52 0.47 0.34 0.98 0.51

HCG=vertical distance from ground plane to fuselage centreline in

side view/m1.59 0.89 1.21 1.27 1.20

LBSE=wheel base/m 1.68 1.52 1.73 4.86 1.38

XMLG=location of main landing gear as fraction of reference wing

MAC0.60 0.80 0.70 0.84 0.90

LTRK=wheel track/m 1.87 2.20 1.47 2.10 1.70

R=range/nautical miles(nm) 480.00 645.00 700.00 375.00 582.21

VCRZ=cruise speed/(nm)hr-1

106.88 86.90 106.02 105.00 78.21



TOD=take off distance/m 182.88 171.00 182.88 230.00 199.95

WFUEL=weight of fuel expended for given range/kg 57.00 66.00 46.27 69.45 67.72

WPAY=transported payload for given range/kg 295.00 265.00 305.27 231.00 284.86

E=endurance/hr 6.00 4.00 5.50 3.29 7.50

Caclulations: Remos GX ERCO Ercoupe Allegro 2007 IKARUS C42 Cheetah XLS

Wing Loading/kgm-2 54.62 43.33 52.52 27.66 42.45

Power-to-Weight 0.12 0.10 0.12 0.16 0.11

Power loading/kWm-2 6.75 4.24 6.49 4.39 4.85

Maximum Landing Weight Ratio 0.93 0.92 0.95 0.90 0.92

Structural Weight Efficiency 0.62 0.64 0.63 0.56 0.62

Useful Load Fraction 0.38 0.36 0.37 0.44 0.38



Maximum Payload Fraction 0.49 0.46 0.51 0.49 0.51

Maximum Fuel Fraction 0.10 0.12 0.08 0.15 0.12

Span Loading/kgm-1 64.20 62.58 55.44 43.08 58.33

Wing Apex Locale 0.39 0.24 0.28 0.26 0.35

Flap Chord Fraction 0.23 0.19 0.23 0.22 0.28

Flap Span Fraction 0.52 0.52 0.51 0.47 0.53

Aileron Chord Fraction 0.18 0.21 0.30 0.21 0.23

Aileron Span Fraction 0.47 0.52 0.45 0.38 0.38

Aileron Area Fraction 0.07 0.12 0.06 0.07 0.06

Fuselage Slenderness 4.64 4.60 6.36 4.97 3.50

Fuselage Loading/kgm-1 92.22 93.95 77.86 70.47 98.78

Empennage Volume Coefficient 1.11 0.44 2.08 0.60 0.41



Spin Recovery(Low-set H-Tails Only) 0.92 0.60 0.48 0.50 0.57

Empennage Area Ratio 0.29 0.17 0.39 0.22 0.20

Elevator/Rudder Chord Fraction 0.33 0.48 0.29 0.73 0.43

Elevator/Rudder Span Fraction 1.00 1.77 1.12 0.95 1.93

Elevator/Rudder Area Fraction 0.17 0.21 0.08 0.26 0.19

Turn-over Angle/Deg. 1.23 1.11 1.25 1.22 1.33

Performance Value Index/nm2m

-1hr

-1 280.52 327.78 405.79 171.20 227.73

Specific Air Range/nmkg-1 8.42 9.77 15.13 5.40 8.60

Transport Efficiency 5.18 4.02 6.60 3.33 4.21

Endurance Efficiency/hrkg-1 0.11 0.06 0.12 0.05 0.11



Cessna 162 Sky Arrow 650 Flight Design CTSW Skyeton K-10 LSA Porterfield LP65 Cessna-152 CZAW Mermaid Aviasud Mistral

598.70 650.00 600.00 575.00 544.00 757.50 650.00 390.00

11.15 13.44 9.94 12.15 15.70 14.86 13.71 16.39

74.60 81.00 75.00 73.50 48.00 101.00 89.48 47.70

546.77 617.24 534.90 525.65 517.26 709.21 592.54 339.26

378.30 400.00 318.00 285.00 318.00 490.33 420.00 205.00

220.40 250.00 282.00 290.00 227.00 267.17 431.00 288.50

74.19 46.80 93.00 70.50 38.20 68.98 82.08 72.49

9.26 9.70 8.50 9.10 10.59 10.16 11.68 9.40

1.59 2.50 1.54 1.12 1.33 1.68 2.47 1.60

6.73 7.60 6.22 6.24 7.46 7.34 7.92 6.40

0.24 0.29 0.28 0.33 0.33 0.26 0.39 0.28



1.14 1.42 1.33 1.02 1.48 1.68 1.69 1.46

5.78 4.20 5.67 4.46 5.68 4.19 5.79 3.68

0.28 0.60 0.28 0.33 0.32 0.31 0.26 0.35

1.14 2.90 1.33 1.02 1.66 1.15 1.04 1.46

8.69 8.90 8.89 7.44 9.73 9.85 10.91 6.46

5.78 4.78 5.67 4.46 5.61 4.29 7.79 3.68

0.81 0.58 0.82 0.97 1.48 1.14 1.21 1.01

1.38 1.25 1.54 1.02 1.54 1.26 1.84 1.25

3.59 4.00 4.41 3.12 4.18 3.98 4.41 3.33

2.89 3.34 3.49 2.47 3.76 3.51 4.38 3.36

1.21 1.32 1.33 1.32 1.48 1.43 1.26 1.46

0.24 0.71 0.41 0.21 0.29 0.18 0.38 0.20



0.41 0.50 0.69 0.35 0.37 0.61 0.39 0.69

0.28 0.35 0.14 0.29 0.48 0.42 0.13 0.35

0.69 0.70 0.77 0.56 0.83 0.94 0.78 0.76

1.31 1.44 1.12 0.94 2.63 1.36 1.95 1.25

1.38 2.88 1.26 1.02 1.29 1.47 2.08 1.25

0.73 0.50 0.31 0.55 0.93 1.14 0.51 0.42

1.78 1.00 1.19 0.94 1.38 1.15 1.30 1.18

1.58 2.49 1.48 1.46 5.15 1.47 2.60 4.65

0.56 0.81 0.52 0.46 0.66 0.25 0.60 0.41

2.07 1.82 1.70 1.67 1.86 2.32 3.76 1.94

360.00 380.00 660.00 395.00 325.00 414.00 391.43 286.00

126.20 90.00 129.00 127.00 91.80 141.55 95.56 49.00



195.10 240.00 232.00 346.00 293.00 420.00 259.00 284.00

74.19 46.80 93.00 70.50 38.20 65.00 82.08 72.49

220.40 250.00 282.00 290.00 227.00 230.00 431.00 288.50

3.30 4.25 9.50 5.00 3.50 3.50 4.50 4.90

Cessna 162 Sky Arrow 650 Flight Design CTSW Skyeton K-10 LSA Porterfield LP65 Cessna-152 CZAW Mermaid Aviasud Mistral

53.70 48.36 60.36 47.33 34.65 50.96 47.41 23.79

0.12 0.12 0.13 0.13 0.09 0.13 0.14 0.12

6.69 6.03 7.55 6.05 3.06 6.79 6.53 2.91

0.91 0.95 0.89 0.91 0.95 0.94 0.91 0.87

0.63 0.62 0.53 0.50 0.58 0.65 0.65 0.53

0.37 0.38 0.47 0.50 0.42 0.35 0.35 0.47



0.37 0.38 0.47 0.50 0.42 0.35 0.66 0.74

0.12 0.07 0.16 0.12 0.07 0.09 0.13 0.19

64.65 67.01 70.59 63.19 51.37 74.56 55.63 41.49

0.24 0.33 0.25 0.18 0.18 0.23 0.31 0.25

0.21 0.21 0.21 0.32 0.22 0.16 0.23 0.19

0.62 0.43 0.67 0.49 0.54 0.41 0.50 0.39

0.25 0.21 0.21 0.32 0.20 0.27 0.25 0.24

0.31 0.42 0.38 0.33 0.39 0.55 0.27 0.30

0.07 0.04 0.08 0.08 0.09 0.08 0.09 0.06

4.88 6.07 4.04 6.11 4.86 5.84 4.31 5.12

88.96 85.53 96.46 92.22 72.89 103.19 82.02 60.93

0.77 0.75 1.16 0.48 0.68 0.66 1.12 0.47



0.59 1.42 0.59 0.60 0.78 0.29 0.97 0.29

0.26 0.25 0.35 0.20 0.24 0.24 0.32 0.20

0.41 0.50 0.18 0.52 0.58 0.44 0.17 0.45

0.95 0.50 0.89 0.92 2.03 0.93 0.94 1.00

0.25 0.15 0.09 0.22 0.25 0.32 0.12 0.12

1.23 1.18 1.12 1.00 1.17 0.88 0.88 0.95

232.87 142.50 366.98 144.99 101.83 139.52 144.42 49.35

4.85 8.12 7.10 5.60 8.51 6.37 4.77 3.95

2.97 5.34 3.03 4.11 5.94 3.54 5.25 3.98

0.04 0.09 0.10 0.07 0.09 0.05 0.05 0.07



y

x



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25.00

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35.00

40.00

45.00

50.00

0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18

M T O W / S w

P/MTOW

Aircraft Engine-Sizing (1)

ERCO Erc

IKARUS C

Cheetah

Skyeton

Porterfiel



0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

45.00

50.00

0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00

M T O W / S w

P/Sw

Airframe Engine-Sizing (2)

Cheetah

IKARUS C

Skyeton

Porterfie

ERCO Erc



Technical Data ERCO Ercoupe Cheetah XLS

MTOW=Maximum take-off Weight/kg 572.00 560.00

Sw=Reference wing area/m2 13.20 13.19

P=Total net power output/kW 56.00 64.00

MLW=Maximum landing Weight/kg 525.80 512.60

BOW=Basic operating Weight/kg 364.00 346.00

WMPAY=Maximum payload Weight/kg 265.00 284.86

WMFUEL=Maximum fuel capacity Weight/kg 66.00 67.72

b=Wing span/m 9.14 9.60

LAPX=Longitudinal distance from forward fuselage nose

to wing apex/m1.44 1.99

LFUSE=Length of fuselage body/m 6.09 5.67

CFPNL=chord length of flap panel(at base and tip)/m 0.28 0.51

CFLCL=chord length of wing planform(at flap base andtip)/m

1.50 1.83

bFPNL=span of flap panels(from tip to tip)/m 4.73 5.07

CAPNL=chord length of aileron panel(inboard and

outboard)/m0.33 0.38

CALCL=chord length of wing planform(at aileron inboard

and outboard)/m1.57 1.64

bAPNLO=span of aileron panels(from outboard tip to

tip)/m7.19 8.68

bAPNLI=span of aileron panels(from inboard root to

root)/m2.40 5.07

SAPNL=Total aileron panel area/m2

1.62 0.74

DVERT=Maximum vertical diameter of fuselage/m 1.32 1.62

LEMP=Length defined as from quarter chord of

reference wing MAC to quarter chord of empennage

MAC/m

3.77 3.51

SEMP=reference empennage area/m2

2.22 2.65

MAC=reference wing mean aerodynamic chord/m 1.43 1.72SRUDC="clean" rudder area/m

20.17 0.13

SRUD=rudder area/m2

0.29 0.22

CEPNL=chord length of empennage panel(at base and

tip)/m0.36 0.52

CELCL=chord length of empennage surface(at surface

base and tip)/m0.75 1.19

bEPNL=span of empennage panel(from base to tip)/m 2.20 2.22



bEPMP=span of empennage surface(root to tip)/m 1.24 1.15

SEPNL=empennage panel area/m2

0.47 0.51

HCG=vertical distance from ground plane to fuselage

centreline in side view/m0.89 1.20

LBSE=wheel base/m 1.52 1.38

XMLG=location of main landing gear as fraction of

reference wing MAC0.80 0.90

LTRK=wheel track/m 2.20 1.70

R=range/nautical miles(nm) 645.00 582.21

VCRZ=cruise speed/(nm)hr-1

86.90 78.21

TOD=take off distance/m 171.00 199.95

WFUEL=weight of fuel expended for given range/kg 66.00 67.72

WPAY=transported payload for given range/kg 265.00 284.86

E=endurance/hr 4.00 7.50



Skyeton K-10 LSA Porterfield LP65

575.00 544.00 KEEP

12.15 15.70 KEEP

73.50 48.00 KEEP

525.65 517.26 KEEP

285.00 318.00 KEEP

290.00 227.00 KEEP

70.50 38.20 KEEP

9.10 10.59 KEEP

1.12 1.33 CHANGE

6.24 7.46 CHANGE

0.33 0.33 CHANGE

1.02 1.48 CHANGE

4.46 5.68 CHANGE

0.33 0.32 CHANGE

1.02 1.66 CHANGE

7.44 9.73 CHANGE

4.46 5.61 CHANGE

0.97 1.48 CHANGE

1.02 1.54 CHANGE

3.12 4.18 CHANGE

2.47 3.76 CHANGE

1.32 1.48 CHANGE0.21 0.29 CHANGE

0.35 0.37 CHANGE

0.29 0.48 CHANGE

0.56 0.83 CHANGE

0.94 2.63 CHANGE



1.02 1.29 CHANGE

0.55 0.93 CHANGE

0.94 1.38 CHANGE

1.46 5.15 CHANGE

0.46 0.66 CHANGE

1.67 1.86 CHANGE

395.00 325.00 KEEP

127.00 91.80 KEEP

346.00 293.00 KEEP

70.50 38.20 KEEP

290.00 227.00 KEEP

5.00 3.50 KEEP

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