Technical Questions Flashcards
How is a jet engine’s oil cooled?
through a fuel oil heat exchanger.
You are a Boeing 727 with three fuel tanks (left, right and center). For a normal takeoff the fuel tanks each feed its appropriate engine. You cannot have more than one thousand pounds of imbalance between tank one (left) and tank three (right). After takeoff you lose the number three engine, how are you going to cross feed?
Crossfade form number three tank to number two engine.
What does 1013.2 mb equate to in inches of mercury?
Standard atmospheric pressure at sea level is 1013.2 millibars, which is the equivalent of 29.92 inches of mercury.
What affects brake temperature?
Weight, temperature, frequency of use, and taxi distance.
What is the reciprocal of 318 degrees?
(+2, -2 method) 138 degrees.
What happens to the airspeed indicator when both the ram air and drain holes in the pitot system are blocked?
The airspeed indicator acts like an altimeter
What is an electrical relay?
electrical relays serve to remotely control electric circuits carrying large amount of current.
What does a diffuser do?
A diffuser is simply a divergent duct that slows the velocity of the impellers outside air: thereby, increasing the air pressure before it enters the combustion chamber.
What convert AC electrical power to DC electrical power?
Transformer rectifier.
What will the EPR indications be after a bleed source is turned on?
They will read lower.
Zero fuel weight includes what?
Maximum zero- fuel weight is a maximum allowable aircraft weight EXCLUDING fuel (Basic Operating Weight + Payload)> this is a structural limitation; fuel in the tanks favorably redistributes aircraft structural loads.
You are flying at 250 knots indicated in 1G flight. You nose the aircraft over to 0G flight, what is true concerning drag?
Induced drag is decreased.
What has an effect on specific range?
Weight of an aircraft
If there is no pressure differential in the cabin on climb out what is the problem?
There is a pressure vessel leak.
What is the corrective action for a compressor stall?
The possibility of damage is immediate with the steady stall and recovery must be accomplished quickly by reducing throttle setting, lowering the airplane angle of attack, and increasing airspeed.
