FW multi study guide

Question 1

describe the engines

Answer 1

O-360/LO-360, normally aspirated (carburetor only), air cooled, four cylinder, direct drive, horizontally opposed, and each rated at 180 hp at 2700 rpm; wet sump pressure type oil system (max 8 qts min 5 qts)

Question 2

describe the induction system

Answer 2

engine equipped with a carb heat system which allows heated unfiltered air to enter the induction system to alleviate the possibility of induction ice; cowl flaps allow the amount of engine cooling air to be controlled to maintain a desired cylinder head temp

Question 3

describe the ignition system

Answer 3

dual engine driven magneto system which is independent of the electrical system

Question 4

how do magnetos work

Answer 4

mags work on the principle of electromagnetic induction; if you spin a permanent magnet inside a coil of wire you generate a current; the current travels to the spark plugs where its used to ignite the fuel air mixture in the cylinders

Question 5

describe the prop

Answer 5

hartzell; two blade, constant speed, counter rotating, full feathering with unfeathering accumulators, 76” in diameter

Question 6

what is an unfeathering accumulator

Answer 6

stores oil under pressure when you move a prop lever into the feather detent position; when you move the prop back out of detent, high pressure oil returns to the propeller hub moving the prop blades back to low pitch and high rpm; helps prop start windmilling again and helps engine to restart