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.

How does a jet engine/gas turbine work?

How does a jet engine/gas turbine work?

Forward motion forces air into the intake which is a convergent duct where it is compressed (causing a temperature rise).

Fuel is added and combustion takes place increasing the volume. The expanding gasses accelerate to the atmosphere through the exhaust duct nozzle producing a propulsive jet.

Why do the fuel gauges read in kg, but fuel is delivered in litres?

Why do the fuel gauges read in kg, but fuel is delivered in litres?

Because the specific gravity can change with temperature.

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 is convergency?

What is convergency?

Meridians converge from their maximum distance apart (at the equator) to the poles where they meet.

Great circles are the shortest distance between two points and convergency represents the change in direction experienced between those points.

What clearance do MSA values give?

What clearance do MSA values give?

They provide at least 1000ft clearance over obstacles within 25NM of the homing facility.

Why do aircraft have leading edge devices?

Why do aircraft have leading edge devices?

There are 2 types of leading edge devices:

-Slats. Slats are movable surfaces on the leading edge of the wing which when deployed, allow the wing to operate at a higher angle of attack, by delaying separation in the wing upper surface.

-Leading edge flaps (Krueger). Leading edge flaps are hinged on the leading edge of the wing and extend forward and down when deployed. they provide similar benefits as trailing edge flaps, by increasing wing surface area and camber.

If the yaw damper fails and the aircraft experiences Dutch roll, how can the pilot stabilize the aircraft?

If the yaw damper fails and the aircraft experiences Dutch roll, how can the pilot stabilize the aircraft?

Apply opposite aileron to the direction of the roll.

What is alternate air? And what is its relation with the air filter?

What is alternate air? And what is its relation with the air filter?

Alternate air is....

If in a go-around, which take-off stages will still apply?

If in a go-around, which take-off stages will still apply?

None. The go around procedure is distinct from the take off procedure. You will still have an acceleration altitude, but you will not have a screen height, V1, Vr, V2, flap retraction altitude, etc.

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