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page 10 - 1
Jan. 01/2007
Effectivity: 912 UL / A / F
OM Edition 1 / Rev. 0
BRP-Rotax
10) Operating instructions
The data of the certified engines are based on type certificate of type 912 A
(TW 8/89), 912 F / S (TW9 - ACG).
10.1) General limits of operation
10.1.1) Operating speeds and limits (912 UL / A / F)
1. Speed:
Take-off speed ............................ 5800 1/min (5 min.)
Max. continuous speed ............... 5500 1/min
Idle speed ................................... approx. 1400 1/min
2. Performance (ISA): (International Standard Atmosphere)
Take-off performance .................. 59,6 kW at 5800 1/min
Max. continuous performance ..... 58 kW at 5500 1/min
3. Acceleration:
Limit of engine operation at zero gravity and in negative "g"condition
max. ............................................ 5 seconds at max. -0,5 g
4. Oil pressure:
max. ............................................ 7 bar
■ CAUTION: For a short period admissible at cold start.
min. ............................................. 0,8 bar (12 psi) (below 3500 rpm)
normal ......................................... 2,0 ÷ 5,0 bar (29 ÷ 73 psi) (above
3500 rpm)
5. Oil temperature:
max. ............................................ 140 °C ................. (285 °F)
min. ............................................. 50 °C.................... (120 °F)
normal operating temperature ....... approx.. 90 ÷ 110 °C (190÷230 °F)
6. Coolant
See Operating media Chapter 10.2.1
- In use of conventional coolant:
Coolant temperature: (coolant exit temperature)
max.....................................................120 °C (248 °F)
Cylinder head temperature:
max.....................................................150 °C (300 °F)
Permanent monitoring of coolant temperature and cylinder head
temperature is necessary.
- In use of waterless coolant:
Cylinder head temperature:
max.....................................................150 °C (300 °F)
Permanent monitoring of cylinder head temperature is necessary.
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