Mixture is the ratio of fuel to air.  At higher altitudes (I usually don't mess with the mixture until about 20,000 feet) you need to add more air to compensate for the thinner air at altitude.  I add air until the performance starts to decline then back off a little.

Prop trim is like changing gears in a car.  After you get to cruising altitude you should trim the prop to get better fuel efficiency.  Watch the fuel flow gauge and trim until performance starts to decline, then back off a little.

I don't mess with mixture until 20,000 feet.  Proper procedure would be to start messing with it at about 5,000 feet.

I start weakening my mixture once above 2000 ft ASL.
(My real flight instructor does the same thing).
Once the trim, throttle, prop control and mixture settings are correctly set, the aircraft will fly faster and more efficiently... 8)...!

Cheers...!

Paul.

Note: If your airfield is above 5000 ft ASL the mixture will need to be weakened for a quick, successful take-off... ...!

Pick the default Cessna 182, and practice with the throttle prop and mixture controls.

Pushing the black throttle knob in speeds the engine up.
Pulling the blue prop knob out coarsens the prop pitch.
Pulling the red mixture knob out weakens the mixture, (fully out will stop the engine).

Cheers ....!

Paul.

P.S. ..practice the "Flying Lessons" with the instructor in the simulator... 8)...!

Pick the deafault Cessna 182 Skylane, (the fixed wheel version!), as shown here...>>>



Locate these gauges and remember them:

a)   Fuel flow gauge.
a)   Manifold pressure gauge.

b)  Cylinder head temperature gauge.
b)  Exhaust gas temperature gauge.

c)  Tachometer gauge.

d)  Airspeed gauge.

To take off, Push the three knobs fully in for max power, (Throttle max, Prop fine, Mixture full rich).

When in the cruise, adjust the throttle and prop knobs to balance both the needles in gauges (a) so that they are in the green, (both horizontal).

c)  Keep the tacho needle in the green.

d)  Note the airspeed. You should now be getting the max speed and using the minimium of fuel.

b)  Keep an eye on the cylinder head temperature and exhaust gas temperature....keep them as cool as possible.

(The mixture control becomes more effective when above 2000/5000 ft ASL....slightly weaken by carefully pulling the knob out until the engine starts to run rough, then push it in slightly until the engine runs smooth.
The air/fuel mixture will now be at its most efficient).

When all is running fine, now trim the aircraft for straight and level flight using the trim wheel.

To land, push the prop and mixture knobs fully in. Adjust the throttle to reduce the airspeed. Re-trim for the flare and landing.

Hope this helps... ...!

Don't forget to take the lessons with the instructor in the Cessna 172 in the Flight sim. Most of your problems will be cured there... ...!

The only difference between the 172 and the 182 is the added complication of the propellor control, (the blue knob)... 8).
Once you have mastered this, the rest is easy... ...!

Cheers...

Paul.

Quote:


Hi Juan...!
When you have fully mastered the controls on the Cessna 182 Skylane, can fly it to the satisfaction of your Instructor, and have obtained your Private Pilot Licence, come back again and I will let you into that little secret.... ... ... ... ...!
Tee-Hee...
LOL...!

Cheers... ...!

Paul.

but I am ready!  I really am!  plz show me how plz