3.1 aircraft Ignition Systems

Generally, all basic Aviation plane have twin ignition systems. There are essentially two main benefits to having actually a double ignition source system, the first benefit is the boosted safety and also reliability the the dual-source system - it enables for one resource to fail fully while not losing the whole ignition system completely.

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

However, it is vital that, in the event of a power failure after becoming airborne, the most crucial thing to do is to automatically establish and also maintain the finest glide airspeed.

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

Ascent fast Quiz
ascent Quick Quiz - 3.1 plane Ignition solution Question 1: One purpose of the dual ignition mechanism on an aircraft engine is to provide for Answer Question 2: The many important dominion to psychic in the event of a strength failure after ending up being airborne is come Answer
climb Quick Quiz - 3.2 starting the Engine Question 1: What have to be the first action after beginning an aircraft engine? Answer Question 2: Should it end up being necessary to handprop an airplane engine, the is extremely necessary that a knowledgeable pilot Answer

3.3 Carburetor Icing

Most general Aviation maintain aircraft are equipped with carbureted engines. The operating principle the float-type carburetors is the difference in wait pressure in between the venturi throat and the wait inlet. Hence (the autumn in pressure), carburetor-equipped engines room susceptible come induction icing.


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


The an initial indication that carburetor ice on airplanes with fixed-pitch propellers and float-type carburetors is a loss of RPM.

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When carburetor warmth is applied to get rid of carburetor ice in an aircraft equipped v a fixed-pitch propeller, there will be a additional decrease in RPM (due come the less thick hot waiting entering the engine) followed by a steady increase in RPM as the ice melts. There may likewise be "pops" and also "sputters" together the engine ingests the melt ice and also water.

ascent Quick Quiz - 3.3 Carburetor Icing Question 1: With regard to carburetor ice, float-type carburetor systems in comparison come fuel injection systems are generally taken into consideration to it is in Answer Question 2: The operating principle that float-type carburetors is based upon the Answer Question 3: If an plane is equipped with a fixed-pitch propeller and a float-type carburetor, the an initial indication the carburetor ice would most likely be Answer Question 4: The visibility of carburetor ice cream in an plane equipped through a fixed-pitch propeller have the right to be proved by using carburetor heat and also noting Answer Question 5: Which problem is many favorable come the development of carburetor icing? Answer Question 6: The opportunity of carburetor icing exists even when the ambient wait temperature is together Answer

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