How does an aerofoil work?

How does an aerofoil work?

An aerofoil is a body shaped to produce an aerodynamic reaction (lift) perpendicular to its direction of motion, for a small resistance (drag) force in that plane. It achieves this by accelerating the flow passing over it, and decelerating the flow passing under it. This change in velocity causes a change in pressure, which in turn generates lift.

If you climb to FL300 at a constant IAS of 250kts, what would happen to the TAS?

If you climb to FL300 at a constant IAS of 250kts, what would happen to the TAS?

TAS will increase.

What is rate of climb/descent?

What is rate of climb/descent?

It's vertical velocity of the aircraft usually expressed in feet per minute.

What is ACA/H? What ACA/H did you use? Why do we have an ACA/H?

What is ACA/H? What ACA/H did you use? Why do we have an ACA/H?

Asymmetric Committal Altitude/Height is the minimum height needed to establish a positive climb whilst maintaining adequate speed for control and removal of drag during an approach to a landing.

In the Seneca at Oxford we used 200ft AGL. At this altitude when continuing for landing you selected the landing flaps (check clear runway, on speed, on altitude, landing clearance received).

You now are committed to land, single engine G/A with flaps 40 and gear down is not possible in a Seneca.

What is departure?

What is departure?

Departure is an east-west distance along a parallel line of latitude, other than the equator.

Departure is calculated by: Change of longitude(minutes) x cosine of latitude.

What is a high bypass ratio engine?

What is a high bypass ratio engine?

In a high bypass design, the vast majority of the thrust is derived from the ducted fan, rather than from combustion gases expanding in a nozzle.

A high bypass ratio provides a lower thrust specific fuel consumption (grams/sec fuel per unit of thrust in kN using SI units), especially at zero velocity (at takeoff) and at the cruise speed of most commercial jet aircraft.

What performance category was your last aircraft? How are airplanes classified?

What performance category was your last aircraft? How are airplanes classified?

Note: this question was asked to a candidate with previous Seneca experience, make sure to be able to answer this question for your previous aircraft type.

Seneca is class A.

Aircraft are classified according to their Vat.

What is anhedral?

What is anhedral?

Downward inclination of a wing from the root to the tip.

What are the advantages of swept wings?

What are the advantages of swept wings?

Swept wings are:

Better for high speed flight as they have minimal camber and thickness reduce drag and delay Mcrit More stable in turbulence as they produce less lift and as a result they are less responsive to updraughts

Could a Seneca fly to the South of France without stopping for extra fuel?

Could a Seneca fly to the South of France without stopping for extra fuel?

No

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