d03934
page 10 - 4
Jan. 01/2007
Effectivity: 912 UL / A / F
OM Edition 1 / Rev. 0
BRP-Rotax
Performance data for variable pitch propeller:
Engine operation is permitted without restriction between full throttle perfor-
mance and power requirement of propeller, providing engine speed
over 5500
r.p.m. is restricted to 5 minutes.
However, for economic reasons it is recommended to run the engine in
accordance with the following table:
5500
5000
4500
4000
0
10
20
30
40
50
60
Dichtehöhe / Density Altitude [m]
1000 2000 3000 4000 5000 6000 7000
Leistung / Performance [kW]
5800 1/min Vollast
take off performance
fig. 11
02721
00452
10.1.1.2) Performance graph for non-standard conditions
The following graph shows the performance drop with increasing
flight altitude. The curves show the performance at 5800, 5500,
5000, 4500 and 4000 r.p.m., at full throttle.
The engine allows operation with fully open throttle valve over the
whole r.p.m. range, without limitation. But full throttle performance
above 5500 r.p.m. is limited to 5 minutes.
At deviation of temperature condi-
tions from standard atmosphere con-
ditions the engine performance to be
expected can be calculated from the
performance indicated, multiplied by
standard temperature, divided by
actual temperature in °K.
P
act.
= P
stand.
T [K] = t [°C]+273
T
standard
T
actual
Engine Power-
Setting
Engine speed
[rpm]
Performance
(kW)
Torque [Nm]
Manifold pres.
[in.HG]
Take-off perform. 5800 59,6 98,1 full throttle
cruising power 5500 58,0 100,7 full throttle
75% 5000 43,5 83,1 27,2
65% 4800 37,7 75,0 26,5
55% 4300 31,9 70,8 26,3
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