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Amber Band on Takeoff, Prior to Flap Retraction

Started by emerydc8, Tue, 21 Jun 2016 06:00

Britjet

Re the stall in Level-D...
Boeing changed their procedures on this a few years ago.
Beforehand the focus was on "powering" out of the stall while maintaining a specific, and relatively neutral pitch attitude dependant on altitude (at high altitude you had to go for a lower nose target).

Now they advocate a positive nose-down pitch accompanied by thrust.
As Jon says the big issue comes with the pitch up manoeuvre once the stall is over - it is extremely easy to have a secondary g-induced stall.  Training concentrated on not trying to pitch up too early - accelerating to the top of the "hockey stick" with the nose about 5 degrees down tended to work best, but a lot depended on the aggressiveness of the pilot, and of course the pitch-power couple from the thrust made it more difficult.

Not an easy manoeuvre, and the sim shakes like hell!

Peter

cagarini

At least definitely not a mushing stall, like in my Astir Jeans :-)

emerydc8

Quotebut a lot depended on the aggressiveness of the pilot, and of course the pitch-power couple from the thrust made it more difficult.

You are so right about this. I tried this again but used a higher power setting prior to the stall. The difference in altitude loss was significant. At 66%, the engines spooled up quickly enough that I was basically able to power out of it with minimal altitude loss.

https://youtu.be/608QK4liB4Y

Did you guys use the top of the hockey stick as a point to start your level off on a takeoff stall?

Britjet

We didn't practice take-off stalls Jon, high altitude clean and landing configuration were the norm.
You can only do so many stalls with a crew LOL.

Peter

emerydc8


cagarini

Thx for the very nice videos emerydc8 ( Jon ? ).

Hardy Heinlin


emerydc8


Britjet

Tested in the sim. Confirmed that it isn't present.
Peter