Sample Problem - Extra 200 Information Manual

Section 5
Performance
5.1.3

SAMPLE PROBLEM

CONDITIONS
Airfield Pressure Altitude: 1500 ft (457 m),
Cruising flight in FL 80 [8000 ft (2438 m)],
TAKEOFF
The takeoff distance with T/O weight of 840kg (1852 lbs) is shown by Fig. 5.5
Result: Ground Roll: 257 m
Total Distance to clear a 50 ft (15 m) obstacle: 407 m
RATE OF CLIMB
The rate of climb in FL 80 (2438 m) with an aircraft weight of 750 kg is shown by Fig. 5.6
Result: Rate of climb: 950 ft/min
TIME, FUEL AND DISTANCE TO CLIMB
The values from airfield level 1500 ft (457 m) to FL 80 (2438 m) with an aircraft weight of 800 kg
is shown by Fig. 5.7:
Result: Time: (8.7 - 1.9) min = 6.8 min
Distance: (13 - 2.8) NM = 10.2 NM
Fuel consumption: (8.3 - 1.9) liters = 6.4 liters
CRUISING SPEED
The cruising speed in FL 80 (2438 m) with an aircraft weight of 840 kg and power setting of
65% is shown by Fig. 5.9.
Result: Cruising speed : 148 KTAS (274 km/h)
Cruise Altitude and Power Setting should be determined for most economical fuel
consumption and several other considerations.
FUEL CONSUMPTION
The fuel consumption in FL 80 (2438 m) with an aircraft weight of 840 kg and power setting of
65% is shown by Tab. 5.12.
Result: Fuel consumption: 34 liters per hour
RANGE
The range in FL 80 (2438 m) with an aircraft weight of 840 kg (1852 lbs) and power setting of
65%, is shown by Tab. 5.12, including fuel for warm up and takeoff from SL, max continuous
Power climb to cruising altitude, and a reserve of 19 liters (5 US Gal.) for 45 minutes with
45% Power. 5 liters (1.3 US Gal.) unusable fuel is taken into account.
Total fuel:
Warm up & T/O:
Reserve:
Unusable fuel:
Usable fuel:
Result:
Endurance
The endurance in FL 80 (2438 m) is shown by Tab. 5.10.
Result:
5 - 4
122 L
-4 L
-19 L
-5 L
94 L
Range: 386 NM (714 km)
Endurance: 2.66 hours
Outside air temperature on ground: 20°C
Outside air temperature in FL 80: 10°C
(32 US Gal.)
(-1.05 US Gal.)
(-5 US Gal.)
(-1.3 US Gal.)
(24 US Gal.)
Pilot´s Operating Handbook
EXTRA 200
Page Date: 20. April 2002 Page Date: 14. July 2008