Negative flaps for better low speed aileron control?

Hi all,

1.I have a guess at the question of airbrakes improving low speed
response-they simply deflect extra air around their sides, increasing
the airflow over ailerons and wing root.

2.One point I must take issue with was in regards to Reynolds numbers.


Qoute:"I doubt that. Turbulence is associated with high Reynolds
number, and
that depends directly on speed. Low speed - low Re - less
turbulence."


At low RE the boundary layer is much more easily transitioned to
turbulent flow(In fact at RE=60,000 flow is considered critical and
boundary layer attachmnent will fail), therefore turbulence is much
more likely at low RE NOT high RE.

Interesting that no one else noticed that eh?

But as a modeller as well as fullsize pilot I have studied the effects
of low RE a lot more I guess.....

3.I fly a Hornet often, an aircraft with I believe the same fuselage as
the Mosquito, and it also shows the wing drop on ground run tendency,
due to high AOA in the two point position.

4. Small chord tips at low speed may well be sub RE60,000, not creating
ANY lift until RE60K is reached!(RE is proportional to speed, chord and
air density).

Regards & Safe flying to all

Dave Lawley


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dav
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