What does a Mach trimmer do?
What does a Mach trimmer do?
A Mach trimmer automatically compensates for Mach tuck above Mcrit.
How does an altimeter work and which errors can an altimeter experience?
How does an altimeter work and which errors can an altimeter experience?
When an aircraft climbs, the static pressure in the instrument case decreases, which allows the enclosed capsule to expand.
This in turn moves the needle on the instrument to indicate a corresponding altitude.
During descent, the opposite function applies.
Altimeter errors can originate and vary from:
Instrument Pressure Time-lag Barometric Density Temperature Blocked static port
What does a bypass ratio of 11:1 mean?
What does a bypass ratio of 11:1 mean?
For every 1kg of air passing through the combustion chamber, 11kg of air pass bypass the combustion chamber.
Are swept wings effective?
Are swept wings effective?
Swept wings are designed to be the most effective at high speeds. At low speeds, a swept wing produces less lift than its straight counterpart.
What are the benefits of a free turbine?
What are the benefits of a free turbine?
A free turbine is a turbine that is not directly connected to the compressor. This allows the compressor to rotate at a different speed than the turbine. Since the turbine speed is coupled with the propeller, this allows for the propeller to be maintained at a constant ideal speed.
Another advantage is that free turbine engines can be designed to be more compact than their single shaft counterparts
Tell me about the last aircraft you flew in.
Tell me about the last aircraft you flew in.
Example answer for a candidate with previous Seneca experience:
Weights:
Max all up weight – take off 4570lbs Max all up weight – landing 4340lbs Empty weight - 2830lbs Usefull load - 1740lbs
Speeds:
Clean stall 66kts with flaps 60kts Vyse 89kts Cruise 140kts gear raising 107kts – lowering 129kts. Vne 195
The 6 cyclinder teledyne continental turbo- charged, fuel injected engines provide 200 hp at 2575.
Left engine rotated clockwise and right anti clockwise.
No critical engine, RayGay turbo’s 42” MAP, 40” limit at lower levels, cowl flaps provide cooling and has 3 positions, open mid and closed.
Avgas 100/130
Props 2 or 3 blade, constant speed, hydraulically actuated, fully feathering.
Oil keeps props at fine pitch, gas and air keep the rpm towards feather. Takes 6 seconds to feather and must happen before locks engage at 800 rpm.
Limit load factor 3.8G
Fuel 2 x 54 (64US) gallons tanks 8 quarts oil max 6 Min
Retractable gear – hydraulic pumps – electrically driven. 6-7 seconds transit
Nose gear has 27 degrees castor.
Main wheels 55psi, nose wheel 31psi
Cable operated controls, all moving stabilator with anti servo tab which acts as a trim.
Frise ailerons and differential ailerons, up more than down.
Manual flaps, 3 settings, 10, 25, 40 degrees.
4.5” – 5.2” hg suction – AH, DI.
Heated lift deflectors and stall warners, anti ice.
Why does a swept wing increase Mcrit?
Why does a swept wing increase Mcrit?
A swept wing makes the velocity vector normal to the leading edge a shorter distance than the chordwise resultant.
Are jet streams there all year round?
Are jet streams there all year round?
Yes.
There are permanent jet streams in the...
What is the purpose of a locator?
What is the purpose of a locator?
To notify the crew of the aircraft of a particular position on the IAP.
Locators have been largely replaced with Distance Measuring Equipment (DME), but they can sometimes be found associated with Outer or Middle Markers where they are referred to as Locator Outer Marker (LOM) or Locator Middle Marker (LMM).
What errors would cause an altimeter to malfunction?
What errors would cause an altimeter to malfunction?
Altimeter errors:
Instrument error Pressure error Time-lag error Barometric error