Cessna 172 fuel and controls question?

November 11, 2008

How much does it cost to fly 1000km on a Cessna 172 or 152?
How much does usually the aircraft fuel cost per liter?

Also, wanted to ask that what is the red "pull" right from the black "pull" that controls the engine? This is in the cockpit.
Also, if one can answer here about that where the hydraulic brakes are used in C 172, the answer is welcome. THANKS!

C152 25ltrs an hour
C172 35ltrs an hour

Fuel depends where you live. In UK AVGAS is £1.10+VAT at most airports.

The red lever controls Mixture; the amount of fuel entering the Carburettor jet, and hence the engine for combustion. When you climb high, Above 6000ft, the air thins dramaticly, due to decreased pressure. This reduces the air density. The engine fuel is still being pumped in at the same rate (negligible change in density, it is a liquid). Now then engine functions at a optimum fuel/air ratio, and if you put too much fuel in, the engine runs rough. That is because not all the fuel burns, and the unburnt fuel cools the cylinders further. Therefore by reducing the fuel going in, you can return the optimum fuel/air ratio to give you back a little power. It may only give you 100RPM difference, but at full power that equals approximately a 20% power gain!

Finally, hydraulic brakes are on the tops of the rudder pedals. Push the top of the appropriate pedal to operate the appropriate brake!

Comments

2 Responses to “Cessna 172 fuel and controls question?”

  1. kris1au on November 11th, 2008 8:23 pm

    It depends on the model and age of the aircraft – but generally a 172 will burn between 7 and 9 gallons per hour. I'm not sure what that translates to in liters. The cost will depend on where you live – avgas prices vary everywhere.

    Also, are you renting? Becuase many airports that rent aircraft rent at a wet rate, meaning the price of fuel is already included in the rental rate.

    The black "pull" on the control is the throttle. The red "pull" is the mixture. (it controls the fuel/air ratio)
    References :
    C172 Pilot

  2. zanymadpilot on November 11th, 2008 8:47 pm

    C152 25ltrs an hour
    C172 35ltrs an hour

    Fuel depends where you live. In UK AVGAS is £1.10+VAT at most airports.

    The red lever controls Mixture; the amount of fuel entering the Carburettor jet, and hence the engine for combustion. When you climb high, Above 6000ft, the air thins dramaticly, due to decreased pressure. This reduces the air density. The engine fuel is still being pumped in at the same rate (negligible change in density, it is a liquid). Now then engine functions at a optimum fuel/air ratio, and if you put too much fuel in, the engine runs rough. That is because not all the fuel burns, and the unburnt fuel cools the cylinders further. Therefore by reducing the fuel going in, you can return the optimum fuel/air ratio to give you back a little power. It may only give you 100RPM difference, but at full power that equals approximately a 20% power gain!

    Finally, hydraulic brakes are on the tops of the rudder pedals. Push the top of the appropriate pedal to operate the appropriate brake!
    References :
    I'm an Airline Transport Pilot, and an Instructor

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