Recent content by PA32

Some of the Aircraft Flight Manuals I have contain a "Cabin Altitude for Various Airplane Altitudes" graph in them. Typically, the Aircraft Altitude is on the y-axis, going from 0 to about 50,000 feet; and the Cabin Altitude is on the x-axis. Then there are a series of diagonal lines on the...

I recently saw the terms "Squealer Tips" and "Classified Weights" in a text about turbine blades in an article on the Pratt & Whitney PT6A turbo-prop engine. Can anyone explain what is meant by these two terms? What are they and what do they "do"?

Thanks!

Thank you Boneh3ad. Could you elaborate a bit on the following: What is (are) inflection points? Are wing fences and winglets meant to mitigate the "bad" effects of span-wise flow? Or do they do something else? I am a pilot who is very interested in aerodynamics, but my math abilities do...

I've been reading a bit about transonic flow and wondering if I could get a bit more info here. Exactly how do swept wings delay the on-set of Critical Mach? Is "span-wise" flow "bad", and if so, why, and how are the bad effects mitigated on current generation jet aircraft? Thanks!

Can someone explain how and why stall speed (TAS?) varies with aircraft weight and altitude? If you need equations to explain this, I can still handle algebra, but I have forgotten all of my college calculus! Thanks.

Thanks for the reply! Does a T-Tail have any "beneficial" effect re: icing problems (or lack thereof) on the vertical stabilizer? It just seems like a lot of smaller turbo-prop and corporate type jets with T-Tails do NOT have ice protection on their vert stabs.

Can someone explain why a lot of jet and turbo-prop aircraft do not have anti-ice protection on the vertical stabilizer, particularly those aircraft with T-tails? Obviously, it is because the Vertical Stab on these aircraft are not prone to collecting ice, but my question is WHY is this so? Is...