TABLE the CONTENTS:3.1 aircraft IGNITION SYSTEMS3.2 starting THE ENGINE3.3 CARBURETOR ICING3.4 CARBURETOR HEAT3.5 ENGINE TEMPERATURE REGULATION3.6 ABNORMAL COMBUSTION3.7 FUEL/AIR MIXTURE3.8 AVIATION FUEL and ENGINE FUEL PUMPS3.9 CONSTANT-SPEED PROPELLER

3.1 plane Ignition Systems

Generally, all basic Aviation plane have twin ignition systems. There are basically two main benefits to having a dual ignition source system, the an initial benefit is the raised safety and also reliability of the dual-source system - it enables for one source to fail totally while not shedding the whole ignition system completely.

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The other advantage of a double ignition device is the it will administer improved engine performance.

However, that is an important that, in the occasion of a strength failure after becoming airborne, the most vital thing to execute is to instantly establish and maintain the finest glide airspeed.

DO NOT maintain altitude in ~ the cost of airspeed or a stall/lose of control/spin could result.


Ascent rapid Quiz
climb Quick Quiz - 3.1 plane Ignition solution Question 1: One objective of the dual ignition mechanism on an plane engine is to carry out for Answer Question 2: The most important dominance to mental in the occasion of a power failure after ending up being airborne is come Answer
ascent Quick Quiz - 3.2 starting the Engine Question 1: What must be the very first action after beginning an plane engine? Answer Question 2: Should it become necessary come handprop an plane engine, that is extremely important that a knowledgeable pilot Answer

3.3 Carburetor Icing

Most basic Aviation training aircraft space equipped v carbureted engines. The operation principle of float-type carburetors is the difference in air pressure in between the venturi throat and also the waiting inlet. For this reason (the autumn in pressure), carburetor-equipped engines are susceptible to induction icing.

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Induction icing is the development of ice cream in and also around the venturi throat of the carburetor, restricting airflow into the carburetor, and, if left unchecked, lastly rendering the carburetor useless as ice build-up completely seals the venturi throat. Carburetor ice is likely to kind when external air temperature is between 20°F and 70°F and also there is clearly shows moisture or high humidity.

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The very first indication that carburetor ice on airplanes through fixed-pitch propellers and float-type carburetors is a loss of RPM.

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When carburetor warmth is applied to remove carburetor ice cream in an airplane equipped v a fixed-pitch propeller, there will certainly be a additional decrease in RPM (due come the less dense hot wait entering the engine) complied with by a steady increase in RPM together the ice cream melts. There may also be \"pops\" and also \"sputters\" as the engine ingests the melting ice and water.


climb Quick Quiz - 3.3 Carburetor Icing Question 1: With regard come carburetor ice, float-type carburetor equipment in comparison to fuel injection systems space generally considered to be Answer Question 2: The operation principle of float-type carburetors is based on the Answer Question 3: If an plane is equipped v a fixed-pitch propeller and also a float-type carburetor, the first indication the carburetor ice would certainly most likely be Answer Question 4: The existence of carburetor ice in an plane equipped with a fixed-pitch propeller have the right to be showed by applying carburetor heat and also noting Answer Question 5: Which condition is most favorable come the development of carburetor icing? Answer Question 6: The possibility of carburetor icing exists also when the ambient waiting temperature is together Answer



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