Lancair crash at SnF

On Apr 25, 11:23*pm, Stefan wrote:
WingFlaps schrieb:

A direction change in a
plane is always due to acceleration (and that means more drag). That's
Newtonian physics.

Right.

Now we are at first base!


You go from up wind direction (takeoff is usually
up wind) to turn in the wind direction to land down wind. There's an
acceleration, it is a change in _velocity_

Wrong.

I see the problem. You don't know what velocity is. It's a VECTOR. It
changes when you turn. If you don't understand this there's not much
point talking about anything that involves physics....

Cheers

WingFlaps schrieb:

I see the problem. You don't know what velocity is. It's a VECTOR. It
changes when you turn. If you don't understand this there's not much
point talking about anything that involves physics....

Actually, I know an awful lot about physics.

In everyday's language, the word velocity stands for the _magnitude_ of
the vector. Now if you want me to realise outside some technical or
scientific environment that you use the word velocity in the vector
sense, you better say so explicitely. Still easier would be to say
"direction".

On Apr 26, 12:12*am, Stefan wrote:
WingFlaps schrieb:

I see the problem. You don't know what velocity is. It's a VECTOR. It
changes when you turn. *If you don't understand this there's not much
point talking about anything that involves physics....

Actually, I know an awful lot about physics.


So much that you mix up speed and velocity? LOL!

In everyday's language, the word velocity stands for the _magnitude_ of
the vector.

Nope. Not even at high school. The magnitude is "speed".

Now if you want me to realise outside some technical or
scientific environment that you use the word velocity in the vector
sense, you better say so explicitely.

Gosh, this isn't a technical forum? Was my post not including
"technical" terms like acceleration?

Still easier would be to say
"direction".

What does "flying with the wind" imply to you, a direction or a speed?
I'd say the former but I'm only a native English speaker.

Cheers

WingFlaps schrieb:

In everyday's language, the word velocity stands for the _magnitude_ of
the vector.

Nope. Not even at high school. The magnitude is "speed".

Maybe where you live. Not where I live.

On Apr 26, 12:57*am, Stefan wrote:
WingFlaps schrieb:

In everyday's language, the word velocity stands for the _magnitude_ of
the vector.

Nope. Not even at high school. The magnitude is "speed".

Maybe where you live. Not where I live.

BS. This is stated in any basic physics text book -even Wiki knows it:

"In physics...The scalar absolute value (magnitude) of velocity is
speed."

Cheers

WingFlaps schrieb:

In everyday's language, the word velocity stands for the _magnitude_ of
the vector.

Nope. Not even at high school. The magnitude is "speed".

Maybe where you live. Not where I live.

BS. This is stated in any basic physics text book -even Wiki knows it:

"In physics...The scalar absolute value (magnitude) of velocity is
speed."

What part of "everyday's language" wasn't clear?

Stefan wrote in
:

WingFlaps schrieb:

In everyday's language, the word velocity stands for the
_magnitude_ of the vector.

Nope. Not even at high school. The magnitude is "speed".

Maybe where you live. Not where I live.

BS. This is stated in any basic physics text book -even Wiki knows
it:

"In physics...The scalar absolute value (magnitude) of velocity is
speed."

What part of "everyday's language" wasn't clear?


Who's everyday? is he on first or is he the shortstop?


Bertie

On Apr 26, 3:48*am, Stefan wrote:
WingFlaps schrieb:

In everyday's language, the word velocity stands for the _magnitude_ of
the vector.
Nope. Not even at high school. The magnitude is "speed".
Maybe where you live. Not where I live.
BS. This is stated in any basic physics text book -even Wiki knows it:

"In physics...The scalar absolute value (magnitude) of velocity is
speed."

What part of "everyday's language" wasn't clear?

I can see you have trouble with English too.

Cheers

On Apr 25, 7:11 am, WingFlaps wrote:

"In physics...The scalar absolute value (magnitude) of velocity is
speed."

Cheers

But it's relative to space, not the earth, as I posted earlier.
Earth pulls straight down, nothing more. Do this, as we have done many
times: Go out and fly on a day when the upper winds are at 30 or 40
knots and get under the hood, do 30 degree banked turns, maintaining a
constant altitude and power setting, and see if the airspeed changes.
Got to be done over flat land, BTW. Any orographic lift will screw up
the altitude. You won't see any performance changes, but the
airplane's flight path over the ground sure isn't circular. Try 45
degree banked turns. Try it in a glide. See if you can prove me wrong.

Dan

On Apr 26, 5:45*am, wrote:
On Apr 25, 7:11 am, WingFlaps wrote:

"In physics...The scalar absolute value (magnitude) of velocity is
speed."

Cheers

* * * *But it's relative to space, not the earth, as I posted earlier.
Earth pulls straight down, nothing more. Do this, as we have done many
times: Go out and fly on a day when the upper winds are at 30 or 40
knots and get under the hood, do 30 degree banked turns, maintaining a
constant altitude and power setting, and see if the airspeed changes.
Got to be done over flat land, BTW. Any orographic lift will screw up
the altitude. You won't see any performance changes, but the
airplane's flight path over the ground sure isn't circular. Try 45
degree banked turns. Try it in a glide. See if you can prove me wrong.


WTF? I wasn't talking about speed over the ground...