Ovostar wrote:
For what purpose was this concorde painted like that ?
For a movie.
But I don't remember the title
Yes!!! for the movie Airport '79... but was called Airport '80 in Europe, because released one year after in Europe... And in france it was "Sos Concorde"
Has it something to do with the physical law of Bernouilli? In order to create pressure above the wings which is bigger then under the wings and then you have lift? (or something like that... 8O )
SN_Bigbirdy wrote:Has it something to do with the physical law of Bernouilli? In order to create pressure above the wings which is bigger then under the wings and then you have lift? (or something like that... 8O )
No it has nothing to do with that. By the way, on the upper surface of the wing you have an under pressure - so you don't create pressure in that sense but reduce it . But that's another story :p
To come back to the question. Here a link to a picture where one can clearly see that the intake area (also called the highlight area) is not aligned with the vertical. It is inclined downwards (more or less 5°)
realplaneshaveprops wrote:Has it something to do with shockwaves in the Air intake?
Shock waves in the airintake happen also with subsonic aircrafts (from around M0,80)
Koen
Not at all.
Indeed strong shockwaves appear as of approximately M 0.8 .
But it's not because of that.
That's it Koen. It's because of the upwash in front of the wing. By inclining the intake surface by approximately 5° (it depends on a/c type) the flow will be more perpendicular to the surface than otherwise.
As for the high angle of attack one engine out condition, the intention is to prevent flow separation at the outside upper lip and inside lower lip of the intake.
Sometimes you'll see engines (like the inner ones on the A380) which are a little bit inclined towards the fuselage as well. The reason for this is also to make the flow come more perpendicular to the intake surface.
As for rear mounted engines, well they are 1: further away of the downwash while wing mounted engines are closer to the upwash. and 2: the high aoa/ one engine out condition will and the downwash effect more or less compensate for each other while they amplify for wing mounted engines.
The B-17G was introduced onto the Fortress production line in July of 1943, and was destined to be produced in larger numbers than any other Fortress variant. The most readily-noticeable innovation introduced by the B-17G was .......?
The most readily-noticeable innovation introduced by the B-17G was the power-operated Bendix turret mounted in a chin-type installation underneath the nose. This turret was equipped with two 0.50-inch machine guns. This installation had first been tested in combat by the YB-40 and was found to be the only viable innovation introduced by the unsuccessful escort Fortress.
But the second part is still open: Another innovation introduced by the G was ....
Another innovation introduced by the G was having the waist guns being permanently enclosed behind windows instead of being mounted behind removable hatches. This made the rear fuselage somewhat less drafty.
This was the second part I needed.
Jan_olieslagers, you found the first part, you're next
Part 1: Dassault Mystère/Falcon
Part 2: 20 and 200, 200 has a little "tube" on the front of the tailfin and has "cones" coming out of the engine. The 20 doesn't
The most sexy girl in the sky: The Sud-Est Caravelle 12.
)
. But that's another story :p 
