Operating Instructions; General Limits Of Operation; 1) Operating Speeds And Limits (912 Ul / A / F) - Rotax 912 series Operator's Manual

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"
conditions
max. ............................................ 5 seconds at max. -0,5 g
4. Oil pressure:
max. ............................................ 7 bar
min. ............................................. 0,8 bar (12 psi) (below 3500 rpm)
normal ........................................ 2,0 ÷ 5,0 bar (29 ÷ 73 psi) (above
5. Oil temperature:
max. ............................................ 140° C ................. (285° F)
min. ............................................. 50° C ................... (120° F)
normal operating temperature .... approx.. 90 ÷ 110° C(190÷230° F)
6. Cylinder head temperature:
max. ............................................ 150
normal operating temperature .... approx. 75 ÷ 110° C (167÷230° F)
7. Engine start, operating temperature:
max. ............................................ 50
min. ............................................. - 25
8. Fuel pressure:
max. ............................................ 0,4 bar ................ (5,8 psi)
min. ............................................. 0,15 bar ............... (2,2 psi)
Effectivity: 912 UL / A / F
OM Rev. 3
CAUTION: For a short period admissible at cold start.
NOTE: Exceeding the max. admissible fuel pressure
will override the float valve of the carburetor.
The delivery pressure of an additional backing
pump (e.g. electric standby pump) must not
exceed 0,3 bar (4.4 psi) in order not to override
the float valve.
AIRCRAFT ENGINES
3500 rpm)
O C .................. (300° F)
reading at observation point of
the hotter cylinder head, either
no. 2 or no.3.
O C ................... (120° F)
O
C .................. (- 13° F)
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July. 01/2004