Description Units Arrow Arrow K Merlin
Never Exceed Speed (Vne) indicated kts 85 85 66
mph 98 98 76
km/h 157 157 122

Manoeuvring Speed (Va) indicated

Never exceed in turbulent air

 kts 80 73 66
mph 92 84 76
km/h 148 135 122
Cruise Speed @ MTOW kts 70 60 50
mph 81 69 58
km/h 130 111 93
Trim Speed kts 60-65 55-60 47-52
mph 69-75 63-69 54-60
km/h 111-120 102-111 87-96
Stall Speed @ 450kg (MTOW) kts 35 34 33
mph 40 39 38
km/h 65 63 61
Stall Speed @ 320kg kts 31 30 28
mph 36 35 32
km/h 57 56 52

Climb Rate @ MTOW 450kg

at recommended climb speed

 ft/m 925 910 764
m/s 4.7 4.6 3.9
Recommended Climb Speed kts 49 45 45
mph 56 52 52
km/h 91 83 83

Take off Run

Measure from short grass run way

 ft 344 312 279
m 105 95 85

Take off Distance to 15 mts or 50 feet- Note 1

Measure from short grass run way

 ft 771 689 669
m 235 210 204
Maximum Cross Wind kts 15 15 15
mph 17 17 17
km/h 28 28 28

Land Distance @ MTOW from 15 mts- Note 1

Measure from short grass run way

 ft 1050 1017 1004
m 320 310 306
Descent Rate 49 kts @ MTOW ft/m 650 700 720
m/s 3.3 3.6 3.7
Glide Angle at 49 kts @ MTOW angle 7.18 6.67 6.48
Glide Distance from 1000 ft miles 1.4 1.3 1.2
km 2.2 2.0 2.0
Typical Fuel Burn @ Cruise (MTOW) Litre / hr 11 10.5 9.5
US Gal / hr 2.9 2.8 2.5
Range @  Cruise miles 438 402 380
Max useable fuel 67 litres (17.7US Gallon) km 705 646 611
Take-Off Safety Speed (TOSS), Best Glide Speed kts IAS 49 49 44


Design loads
Description Units Arrow Arrow K Merlin
Max take off weight (MTOW / W Max) kg 450 450 450
pound 992 992 992
Wing Weight

 

 kg 58 52 49
pound 128 115 108
Max Base Weight (W susp) kg 392 398 401
pound 864 877 884

Typical Empty Weight

Standard XT Tundra (no options) 178kg

 kg 236 230 227
pound 520 507 500

Useable Load

Optional Equipment Excluded

 kg 214 220 223
pound 472 485 492
kg 55-100 55-100 55-100

Pilot weight range (Front Seat)

 pound 121-220 121-220 121-220
kg 0-100 0-100 0-100
Pilot weight range (Rear Seat) pound 0-220 0-220 0-220


DIMENSIONS
Description Units Arrow Arrow K Merlin
Wing Span m 9.5 9.5 10.0
ft 31.0 31.0 32.7
Wing Area m 12.9 12.9 13.4
ft 139 139 144
Aspect Ratio   6.9 6.9 7.4
Wing Weight kg 58.0 52.0 49.0
pound 128 115 108
Overall Height (Control bar forward) m 3.1 3.1 3.1
ft 10.1 10.1 10.1
Trike Width (To outside of wheels) m 1.9 1.9 1.9
ft 6.3 6.3 6.3
Trike Length m 2.8 2.8 2.8
ft 9.0 9.0 9.0
Wheel Track m 1.7 1.7 1.7
ft 5.6 5.6 5.6
Wheel Base m 2.5 2.5 2.5
ft 8.3 8.3 8.3
Trike Height m 1.7 1.7 1.7
ft 5.6 5.6 5.6
Cockpit Width m 0.7 0.7 0.7
ft 2.3 2.3 2.3
Wing (Packed) Length m 5.3 5.3 5.6
ft 17.4 17.4 18.4
Wing Length (Short Packed) m 4.2 4.2 4.2
ft 13.8 13.8 13.8


POWER PLANT
Description Units
Make Rotax
Model 912 UL
Power 80Hp
Type 4 Stroke-1211cc
Ignition System Dual Electronic
No Cylinders 4
Electric Start Standard
Reduction Ratio 2.43:1


ENGINE LIMITATIONS
Description 912 UL
ENGINE SPEED
Take Off (Max 5 mins) rpm 5800
Maximum Continuous rpm 5500
PERFORMANCE
Take -off Performance kW 59.6
hp 80
Maximum Continuous Performance kW 58
hp 78
OIL PRESSURE

Max

(Allowable for short period at cold start)

 bar 7
psi 102
Minimum (Below 3500 rpm) bar 0.8
psi 12
Normal (Above 3500 rpm) bar 2.0 - 5.0
psi 29 - 73
OIL TEMPERATURE
Maximum deg C 140
deg F 285
Minimum (Note 1) deg C 50
deg F 120
Normal Operating Temperature deg C 90 -110
deg F 190-230
CYLINDER HEAD TEMPERATURE
Maximum deg C 150
deg F 300
EXHAUST GAS TEMPERATURE
Maximum at Max TO power deg C 880
deg F 1620
Maximum at Max Continuous Power deg C 850
deg F 1560
Normal Temperature deg C 800
deg F 1472
AMBIENT START & OPERATING TEMPERATURE
Maximum deg C 47
deg F 116
Minimum deg C -25
deg F 13
Maximum at Max Continuous Power deg C 800
deg F 1472


BASE SUSPENSION RANGE
Description Units Value
Measured from the line joining the leading edge nose bolts to the suspension point.
ARROW WING mm 1245 +/-20
inches 49.01 +/- 0.8
ARROW K WING mm 1235 +/- 20
inches 48.6 +/- 0.8
MERLIN WING mm 1275 +25/ -20
inches 50.2 +0.98 / - 0.8


flight load factor limits
Description Units
Max positive manoeuvring load factor 4.0 G
Negative load factors Prohibited
Load factors below 1.0 G To be avoided


Fuel limitations
Description Units Value
Maximum Usable Fuel  L 67
UK Gal 14.7
US Gal 17.7
Unusable Fuel capacity L 3
UK Gal 0.66
US Gal 0.8
Sump Capacity mL 500
UK Gal 0.11
US Gal 0.13


other limitations
Description Units Value
Maximum Cross Wind   kts 12
mph 14
km/h 22
Maximum Wind Strength kts 20
mph 23
km/h 37
Maximum Ambient Operating Temperature deg C 47
deg F 116


GLIDE ANGLE DISTANCE
Description Units Arrow Arrow K Merlin
  Kts IAS 49 49 49
  Kts CAS 46.1 46.1 46.1
Speed m/s CAS 23.72 23.72 23.72
         
Descent Rate m/s  3.30 3.56 3.66
Glide Angle 7.18 6.67 6.48
Glide Dist from 1000 ft Meters 2190 2033 1977


RANGE
Description Arrrow Arrow K Merlin
IAS 70 60 50
CAS 62.5 54.7 46.8
Range Km 705.02 646.42 611.28


MAX EMPTY WEIGHT
MTOW Min Pilot Fuel 1 hr(l) Max Empty
450 2 at 86kg 18 265