Questions about DH Comet

[asolyom]

Something is very strange with the Comet. After takeoff and initial climb, with AP engaged I begin to loose speed, and the plane stalls.

[TSR2]

Hi Andras, Bare in mind this isn't like a moden autopilot. What have you set your rate of climb at? What is your engine RPM, do you have the de icing on etc?

[RAF_Quantum]

Hi Andras,

There is very good documentation that comes with the Comet and indeed most of the aircraft produced by our developers here. You will find 99% of your answers written within the manuals. Take the time to read each manual for a new type that you download and put into practise what the manual is telling you and you won't go far wrong.

Regards

John

[asolyom]

Hi Andras, Bare in mind this isn't like a moden autopilot. What have you set your rate of climb at? What is your engine RPM, do you have the de icing on etc?

Yes, I know that. Even though I set my rate of climb minimal, the angle of attack was very high. Now I have tried to engage speed lock, then the AP adjusted the rate of climb. I have read in the manual that the climb speed of the Comet is as low as 150 kts.

Andras

[RAF_Quantum]

Hi Andras,

After takeoff, the normal initial climb speed is just 150kt. Holding this speed gave a greater climb angle so that the aircraft could get high quickly for reasons of noise abatement around airports.

Normal speed for the main climb is 260 kts, but can be higher if desired. Climb power is normally around 7400 RPM.
IAS hold can be selected at the desired speed, leaving the autopilot to adjust your climb rate.

Regards

John