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.

Describe the take off segments.

Describe the take off segments.

1st segment starts at screen height and finishes at gear retracted.

2nd segment starts when the gear is retracted and finishes when acceleration alt is reached (min. 400ft max 1000ft) speed V2.

3rd segment starts at acceleration alt, minimum 400ft, and finishes when the flaps are retracted.

4th segment starts when the flaps are retracted, MCT is set and finishes at the 1500ft.

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.

Why is a great circle the shortest distance between two points?

Why is a great circle the shortest distance between two points?

The track changes constantly.

Do airplanes have an optimum C.G.? If yes, where is it?

Do airplanes have an optimum C.G.? If yes, where is it?

Yes, the closer the C.G. is to the rear limit, the less tail down force is required, which means less drag which results in less fuel burn.

Tell me, I was looking out the window and I saw white strokes coming out of the engines at cruising level, but I didn’t see it from an aircraft taking off, why is that and what is the difference?

Tell me, I was looking out the window and I saw white strokes coming out of the engines at cruising level, but I didn’t see it from an aircraft taking off, why is that and what is the difference?

Those are contrails.

The jet engine exhaust gases consist of carbon dioxide and water vapour.

At high altitudes the wator vapour gets released in a very cold environment. This can cause the air to be saturated with water vapour and then condenses. If cold enough the condense can freeze into white droplets. This forms the contrails.

You are flying at FL350 and the temperature reads -30°C, is the aircraft at its optimum temperature?

You are flying at FL350 and the temperature reads -30°C, is the aircraft at its optimum temperature?

No because it is warmer, according to ISA temperature should be -55°C

At what speed does Mach tuck occur?

At what speed does Mach tuck occur?

Mcrit

What is a METAR?

What is a METAR?

A METAR is an observation of the actual weather given by a meteorological observer at that aerodrome.

What is RVSM?

What is RVSM?

Reduced Vertical Separation Minima (RVSM) is the reduction, from 2,000 feet to 1,000 feet, of the standard vertical separation required between aircraft flying between flight level 290 (29,000 ft) and flight level 410 (41,000 ft).

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