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Search: Posts Made By: Microburst2002
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Forum: Tech Log
28th Nov 2012, 10:47
Replies: 147
Views: 30,435
Posted By Microburst2002

Bubbers you have it right Trying to answer...

Bubbers you have it right

Trying to answer the question with Energy or Momentum alone, without considering the very complex subject of aerodynamics and Drag, is a very difficult thing, if possible...
Forum: Tech Log
27th Nov 2012, 14:10
Replies: 147
Views: 30,435
Posted By Microburst2002

The energy or, more practically, the power...

The energy or, more practically, the power extracted from the fuel to keep the airplane flying level at a constant speed would give us some measure of the rate of kinetic energy decrease if the...
Forum: Tech Log
27th Nov 2012, 11:49
Replies: 147
Views: 30,435
Posted By Microburst2002

I hope I manage to paste here this graph... ...

I hope I manage to paste here this graph...

http://www.lets-go-fly.com/Lift%20and%20Drag%20curves%20for%20the%20Wing.pdf

On the slope of the CD curve is the answer of the effect of weight o a...
Forum: Tech Log
26th Nov 2012, 08:56
Replies: 147
Views: 30,435
Posted By Microburst2002

Gennlemen One thing that amazes me about...

Gennlemen

One thing that amazes me about physics is that we don't even know what a force actually is... For us it jIs ust whatever makes a mass to accelerate or decelerate, whatever the hell it...
Forum: Tech Log
24th Nov 2012, 10:59
Replies: 147
Views: 30,435
Posted By Microburst2002

Using Newton (forces, inertia, acceleration,...

Using Newton (forces, inertia, acceleration, momentum) is complicated here, because airplanes move a lot of air. It is not just ann ideal body moving in outer space.

For F=m.a we need to know the...
Forum: Tech Log
24th Nov 2012, 03:43
Replies: 147
Views: 30,435
Posted By Microburst2002

Sorry, that is not possible. Identical airplanes...

Sorry, that is not possible. Identical airplanes with different weights an the same cruising speed can't have the same L/D ratio, because they have different AoA. From then on, any conclusion you...
Forum: Tech Log
23rd Nov 2012, 12:03
Replies: 147
Views: 30,435
Posted By Microburst2002

Bernoulli has absolutely nothing to do here. Like...

Bernoulli has absolutely nothing to do here. Like I said, gliding at constant speed is about energy dissipation. Bernouilli is a particular case of the energy conservation theorem, so they are...
Forum: Tech Log
23rd Nov 2012, 06:37
Replies: 147
Views: 30,435
Posted By Microburst2002

If I had my books and my scanner, I would post...

If I had my books and my scanner, I would post here the L/D curve, and a graph of an airplane gliding angle.

If an airplane has a Lift of 10 tons, and a drag of 1 ton, it has a L/D of 10 and it...
Forum: Tech Log
22nd Nov 2012, 09:03
Replies: 147
Views: 30,435
Posted By Microburst2002

Company speed limit to 250 below 5,000 ft

Company speed limit to 250 below 5,000 ft
Forum: Tech Log
21st Nov 2012, 19:09
Replies: 147
Views: 30,435
Posted By Microburst2002

OK, we are talking about same model at the same...

OK, we are talking about same model at the same descent IAS? Like a heavy "full house" A330 and an empty A330 flying at 300 kt?

Then it is all about L/D ratio.

The distance for altitude is...
Forum: Tech Log
21st Nov 2012, 15:57
Replies: 147
Views: 30,435
Posted By Microburst2002

Extricate has a point. Newton's second law...

Extricate has a point.

Newton's second law (F=m.a) is not only about Inertia. It is also about Force.

Bigger airplanes have more mass, that is obvious. But they have more Drag, too, right?
...
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