Re: Scottie Sighting

In article <130o99fbf7bi77e@xxxxxxxxxxxxxxxxxx>,
eagle@xxxxxxxxxx (Jeff Davis) wrote:

In article <alangbaker-7372DC.18573128032007@xxxxxxxxxxxxxx>,
Lost Balls Baker <alangbaker@xxxxxxxxx> wrote:

No explanation for this stuff, Jeff? Is it just beyond you?

I think the ideal gas law covers it well, with no mass loss. I accounted
for the decrease in air pressure due to the velocity of the air over the
wing. Basic ***. This is your tangential crap. We were discussing snow.
You switched to gas... I think you're full of gas. And you obviously
weaseled out of meeting Abraham by your own admission. Getting up to
Valdez this season?

We were discussing force and the overly simple F = ma version of the
force/momentum equation.

The Force is equal to a (constant) mass multiplied by the acceleration
of that mass is the simplified version of the actual relationship.

Force is equal to the change in momentum of a system with respect to
time.

Since momentum is equal to mass times velocity, and velocity is equal to
distance divided by time, the actual force equation is:

p (momentum) = mv

v (velocity) = d/t

a (acceleration) = v/t

F = p/t

F = mv/t

F = ma (one way to arrange the terms)

F = m/t * v

Which is force equal to a rate of mass flow times the velocity imparted
to that flow.

Which is what you mistook for mass loss.

A fan jet (to avoid you hiding behind the burning of fuel and the gases
thus created): takes in a flow of air, changes its velocity and produces
a force we call thrust.

F = m/t * v

A wing: encounters a certain mass of air every second and changes its
velocity downward and the air (by the law of every force producing an
opposing force) pushes up on the wing as a result. We call that lift.

Now I realize you're one of these ignoramuses (don't be insulted; it
just means you're ignorant, not stupid) who thinks that the air through
which an aircraft passes isn't disturbed by the passage of the aircraft,
but you can educate yourself on this subject if you want.

Here:

<http://amasci.com/wing/airfoil.html>

<http://www.av8n.com/how/htm/airfoils.html>

Read those, and get educated.

Next, we'll work on SunOS versions.

--
According to John Perry Barlow, "Jeff Davis is a truly gifted trouble-maker."


....and sig delimiters!

"-- "

--
"The iPhone doesn't have a speaker phone" -- "I checked very carefully" --
"I checked Apple's web pages" -- Edwin on the iPhone and how he missed
the demo of the iPhone speakerphone.
.

Loading