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Search: Posts Made By: A Squared
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Forum: Tech Log
2nd Aug 2018, 16:05
Replies: 388
Views: 99,640
Posted By A Squared

A previous iteration of the FAA's flight training...

A previous iteration of the FAA's flight training handbook contained the "rejoined at the trailing edge or "equal transit time" fallacy, so I would venture to say that a lot of students in the US...
Forum: Tech Log
30th Jul 2018, 02:04
Replies: 388
Views: 99,640
Posted By A Squared

The tired old "symmetrical airfoil" argument is...

The tired old "symmetrical airfoil" argument is only appealing to those who believe that the stagnation point (point where airflow divides between under the wing and over the wing) on a symmetrical...
Forum: Tech Log
2nd Apr 2013, 19:56
Replies: 388
Views: 99,640
Posted By A Squared

Against my better judgement..... If the air...

Against my better judgement.....

If the air is moving less than .3 mach relative to the airfoil there is no compression.
Forum: Tech Log
27th Oct 2012, 19:20
Replies: 388
Views: 99,640
Posted By A Squared

Lyman, the laws governing the behavior of energy...

Lyman, the laws governing the behavior of energy are completely independent of frame of reference, as long as that frame remains consistent throuought the analysis.

That is fundemental, first...
Forum: Tech Log
23rd Oct 2012, 16:07
Replies: 388
Views: 99,640
Posted By A Squared

Nope. Wrong again. At the airspeeds encountered...

Nope. Wrong again. At the airspeeds encountered in a typical general aviation aircraft, (less than 200 knots) there is no significant compression of the air.

Uhh, yeah, for the purposes of...
Forum: Tech Log
16th Oct 2012, 01:09
Replies: 388
Views: 99,640
Posted By A Squared

Probably a complete waste of my time but here...

Probably a complete waste of my time but here goes:

There are several valid ways to define angle of attack.

You chose to define angle of attack as the angle relative to angle where it produces...
Forum: Tech Log
16th Oct 2012, 00:59
Replies: 388
Views: 99,640
Posted By A Squared

And herein lies the problem: most of what you...

And herein lies the problem: most of what you "know" is wrong.

On a cambered wing that is producing upward lift the airflow over the top is faster than the airflow over the bottom. This is one...
Forum: Tech Log
16th Oct 2012, 00:50
Replies: 388
Views: 99,640
Posted By A Squared

Wrong Again! Yeah, I caught it. the trouble...

Wrong Again!

Yeah, I caught it. the trouble is, it says exactly the *opposite* of what you claim it says.

Here's what the paper says (verbatim quote)

Notice that part in red? The air...
Forum: Tech Log
16th Oct 2012, 00:21
Replies: 388
Views: 99,640
Posted By A Squared

Which was exactly my point, you agree with the...

Which was exactly my point, you agree with the obviously circular reasoning.



Reference for what? The fact that lift, at zero angle of attack, when defined as the angle which produces zero...
Forum: Tech Log
16th Oct 2012, 00:01
Replies: 388
Views: 99,640
Posted By A Squared

Ahhh, and so it is. But then, in your post, you...

Ahhh, and so it is. But then, in your post, you quote him, and thank him for bringing up that point and agree with it, amd build from it in your own words.

Don't try to distance yourself from...
Forum: Tech Log
15th Oct 2012, 23:49
Replies: 388
Views: 99,640
Posted By A Squared

Ummm, no. Beginning by defining angle of attack...

Ummm, no. Beginning by defining angle of attack as the angle relative to the zero lift axis, then attempting to draw conclusions from the fact that the lift at a zero angle of attack is relative to...
Forum: Tech Log
15th Oct 2012, 23:38
Replies: 388
Views: 99,640
Posted By A Squared

OKay, so attempting to decipher your gibberish, ...

OKay, so attempting to decipher your gibberish, apparently you are trying to claim that the only true AoA is that measured relative to the zero lift axis of the airfoil. Certainly there are...
Forum: Tech Log
14th Oct 2012, 01:47
Replies: 388
Views: 99,640
Posted By A Squared

Absolutely, 100 percent, purely wrong. Sorry to...

Absolutely, 100 percent, purely wrong. Sorry to be blunt, but this is completely untrue. A typical cambered airfoil does produce considerable lift at zero angle of attack.

Here is a wikipedia...
Forum: Tech Log
13th Oct 2012, 22:38
Replies: 388
Views: 99,640
Posted By A Squared

A symmetrical airfoil in level flight has a...

A symmetrical airfoil in level flight has a positive (greater than zero) angle of attack. is: The airfoil may be symmetrical, but it coes not encounter the airflow symmetrically. The airflow...
Showing results 1 to 14 of 14


 
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