Taurus – Technical Specifications

Aircraft model
TAURUS 503
Engine ROTAX 503 UL DCDI 2V
max. output (2 carb.) 53 HP @ 6600 RPM
Propeller Twin blade Pipistrel – dia. 1600 mm
DIMENSIONS
Wingspan 49′ 1½
Length 23′ 5″
Height 4′ 6″
Wing area 132.71 ft2
Rudder area 9.69 ft2
Horizontal tail area 14.64 ft2
Aspect ratio 18.6
Pos. flap settings 5 deg, 9 deg – 18 deg
Neg. flap setting -5 deg
CofG safe range 23% – 41% MAC
WEIGHTS
Empty aircraft weight 615 pounds
Minimum crew weight 132 pounds
Max. crew weight 600 pounds
Max take-off mass (MTOM) 1215 pounds
Fuel capacity 8 gallons
Usable fuel 7.1 gallons
FLIGHT CHARACTERISTICS
Stall speed with flaps 33.7 knots
Stall speed clean 35.4 knots
Manoeuvring speed 73 knots
Max. speed with flaps 70 knots
Max. speed to open airbrakes 86 knots
Max. operational speed 110 knots
VNE 120 knots (LSA Category Limitation)
Minimum sink 128 fpm
Minimum sink speed 43 knots
Max. sink with airbrakes 1082 fpm
Best glide ratio 41:1
Best glide ratio speed 59 knots
Glide ratio at 75 knots 33:1
Glide ratio at 97 knots 23:1
Max. speed in tow 81 knots
45°- 45° roll time 3.9 s
Take-off distance at MTOM 377 feet
Take-off dist. over 15 m obstacle at MTOM 755 feet
Cruise speed at 75% power 78 knots
Best climb speed 59 knots
Best climb at MTOM 570 fpm
Ceiling MTOM with engine running 12,795 feet
Max. service load (safety factor 1,8) +5.3g -2.65g
Max. tested load + 7.2g – 7.2g
Consumption at cruise speed 78 knots 3.1 gallons per hour
Consumption at full throttle climb 4.7 gallons per hour

Polar Graph

Speed polar in clean glider configuration (gear & engine retracted, MTOM)

The development team were…

  • Ivo Boscarol – Idea, basic concept, some mechanic parts, ballast system
  • Ing. Franco Orlando – Aerodynamic calculations
  • Ing. Radivoj Kikelj – Structural calculations
  • Ing. Franci Popit – Mechanic solutions, undercarriage
  • Saao Kolar – Composites
  • Valter Mauri – engine mount
  • Igor Strumbelj – Engine automation processor
  • LX navigation – Instruments
  • Elvis Terbizan – Electric systems
  • Boris Velikonja – Production manager