Rans S-12, Руководство по эксплуатации для пилотов, Страница: 5 / 35

a pilot to make the decision between a climbout over a critical obstacle at 35mph followed
by a safer climb at 50mph. By spending time examining the data from the above chart, an
experienced pilot/aerodynamiscist can make several very important discoveries regarding the
configuration of this airplane, but such a discussion is beyond the scope of a simple POH. It
is recommended to simply familiarize yourself with the trends left to right and top to bottom,
understand the transitions necessary when retracting or extending the flaps as it relates to climb
angle and airspeed (kinetic energy).
In addition to the power-on data, the same chart is given below in the power off configuration
to aid the pilot in selecting the best glide speed for engine out emergencies.
Figure 2.3 - Power Off Rate of Climb Chart
The absence of data in this chart reflects the importance of knowing just how fast the airplane
can be made to descend. It is highly unlikely that it will glide better with full flaps than in any
other configuration so that area of testing was ommited. The most important conclusion from
this data is as follows:
1) Best glide no wind conditions, no flaps, 50mph IAS, 500fpm, 8.8:1, 6.5 degrees below the horizon.
Chapter 3 Standard Procedures
Overview
This chapter is by far the most detailed of the operating handbook and indeed is the primary
reason for having a handbook for the aircraft. The test pilot has spent many hours flying the
airplane and has presented here the most refined, safest, and preferred procedures for most all
flight situations. All of the procedures herein should be reviewed by a pilot new to the aircraft
in order to gain familiarization with the philosophy and methods of flying 6167U. At the same
time, realize that everything in the handbook is subject to critiscism and the test pilot’s operat-
ing procedures are no exception.
Starting the Engine
When starting a cold engine, it is of utmost importance to avoid running the motor at very low
RPM until it has warmed up. This is because it runs very rough. To start the engine when it
is cold, begin with the throttle at idle and the starting carburetor activated. The starting car-
buretor is the more appropriate name given, by Rotax, to the choke. Engage the starter until
the engine starts and immediately begin monitoring the engine instruments. Oil pressure may
jump to as much as 100psi for as long as 10 seconds, but as the engine warms up slightly, the
oil pressure will return to normal. It is important to never engage the starter for more than 10
seconds continuously and to give it a 1 minute rest period between every 10 seconds, to pre-
vent over-stressing the starter components. After the engine starts, push the throttle open until
the engine runs at about 2500 RPM and at this point go ahead and close the starting carburetor
(close the choke). This should bring the RPM back to around 2000. In any case it will require
a little ‘artistry’ on behalf of the pilot to get a stubborn engine to idle when cold. The starting
carburetor sends a specific fuel air mixture to the engine which lets it run when cold, it is only
set for a condition of throttle at idle. After starting the motor, if you close the choke before
increasing the throttle, the engine may sputter or die, which is why after a brief period of run-
ning the motor with the choke on, you increase throttle to 2500RPM and then turn off the
choke. To warm up the engine, set the RPM to 2000 for at least 2 minutes and then increase to
2500RPM until oil temperature reaches at least 120 F. Now it is possible to continue with the
run-up procedure to check engine ignition.
If you observe that there is no fuel in the fuel filter, it is best to crank the engine with the
ignition OFF until you see the filter fill at least halfway and then continue for a few seconds
(do not crank for more than 10 seconds without a break). This condition will occur after you
change the fuel filter and also if you inadvertently run the engine with the fuel valve turned off.
Cranking the engine with the ignition off will load the supply side of the fuel system with fuel
and when you finally start the motor, it will not sputter for lack of fuel, which is something
that should be avoided if possible. It is important to note that the engine will run perfectly and
the pilot may observe the fuel filter only half full, this is normal.
Engine Run-up
After the engine instruments are in the green and when you are sure the area is clear, set the
parking brake and begin the run-up procedure. Increase RPM slowly to 3750 and sequentially
turn off and then back on each of the ignition switches. Running the engine on one igni-
tion circuit only will drop the RPM by about 200. There should be a maximum drop of 300
RPM and a difference between the two ignition systems of no more than 115 RPM. It will
likely be best to judge the behavior of this check mostly by listening to the motor. After the
PAGE 5
IAS Climb Ratio Angle
35 - - -
40 600 5.86 9.80
45 680 5.82 9.90
50 760 5.79 9.95
55 750 6.45 8.90
60 700 7.54 7.60
65 680 8.40 6.80
70 620 9.94 5.70
75 600 11.00 5.20
80 425 16.56 3.46
IAS Climb Ratio Angle
35 - - -
40 700 5.03 11.50
45 700 5.66 10.20
50 700 6.29 9.10
55 650 7.45 7.70
60 600 8.80 6.50
65 600 9.53 6.00
70
75 - - -
80 - - -
IAS Climb Ratio Angle
35 500 6.16 9.30
40 680 5.18 11.10
45 750 5.28 10.90
50 620 7.10 8.10
55 620 7.81 7.40
60 600 8.80 6.50
65 650 8.80 6.50
70 - - -
75 - - -
80- - -
IAS Climb Ratio Angle
35 625 4.93 11.70
40 600 5.86 9.80
45 620 6.39 9.00
50 700 6.29 9.10
55 - - -
60 - - -
65 - - -
70 - - -
75 - - -
80 - - -
Flaps 0 Notches Flaps 1 Notch Flaps 2 Notches Flaps 3 Notches
IAS Climb Ratio Angle
35 - - -
40 - - -
45 - - -
50 500 8.80 6.50
55 700 6.91 8.30
60 800 6.60 8.70
65 800 7.15 8.00
70 - - -
75 1100 6.00 9.60
80 1400 5.02 11.50
IAS Climb Ratio Angle
35 - - -
40 - - -
45 - - -
50 550 8.00 7.20
55 620 7.81 7.36
60 650 8.12 7.10
65 900 6.35 9.10
70 1000 6.16 9.30
75 - - -
80 1500 4.69 12.30
IAS Climb Ratio Angle
35 - - -
40 - - -
45 - - -
50 - - -
55 - - -
60 900 6.35 9.80
65 900 5.86 9.10
70 - - -
75 - - -
80 - - -
IAS Climb Ratio Angle
35 - - -
40 - - -
45 - - -
50 - - -
55 - - -
60 - - -
65 - - -
70 - - -
75 - - -
80 - - -
Flaps 0 Notches Flaps 1 Notch Flaps 2 Notches Flaps 3 Notches