A video of REAL LIFE PLANES!!!!!!!

[23rd_SATAN]

Even the forward swept wing mig,

[nscode]

1) it's not a mig, it's a su

2) it's been flying for a long time :)

[23rd_SATAN]

1) it's not a mig, it's a su

2) it's been flying for a long time :)

 

'Kay...

[23rd_SATAN]

it is still a cool video.

[nscode]

it is :)

[warthogmadman987]

can i ask what is the point of foward swept wings? What is the advantage?

[Guest Cali]

Very nice video indeed, great find.

[23rd_SATAN]

can i ask what is the point of foward swept wings? What is the advantage?

 

I think an increase in maneuverability, but I am not positive, nor do I know how or why.

[Pilotasso]

They increase the maximum angle of attack sustainability, provide better lift for the same area, and decreases minimum flight speed.

 

The disavantages are that it would be complicated to place wing mounted stores, and the wings need to be VERY carefully designed to prevent from the wings torque to destruction. I also suspect that the stresses are also significatly higher.

[Weta43]

'The wings need to be VERY carefully designed to prevent from the wings torque to destruction'

 

This is a clue.

 

It's not quite this simple but basicaly: Think of a normal swept back wing where the wingtips are behind the rotational center of the plane. If you use the control surfaces they push the wings slightly out of the line of flight of the aircraft & the wings change the direction of the plane, but because the wintips are trailing the center of forces for the plane they get pushed back into line once the control surfaces are released.

Now imagine the wings are on the other way around - the tips are in front of the center of rotation of the plane. If the control surfaces deflect the wing the plane starts to change direction in the same way, but the forces acting on the wing are now pushing it away from the center not towards it & the deflection tends to get bigger unless you apply opposite forces with the control surfaces - the wing is inherently unstable & more twitchy - more manouverable, but needs a computer to keep it under control.

It's as if the wingtips act like the tail on a weathervane. if the tail is downwind (tips behind) - it's stable, if it's upwind (tips in front), it wants to whip around the other way. You can keep a weathervane pointing the wrong way into a wind, but you've got to keep working at it. It's essentially why the tailplanes got moved from the front (Wright Bro's etc) to the back

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It's also sayed to be more efficient in sub and transsonic flight

[STAR_80]

The US also used this technology with the X-29 program. Extreme AOA (angle of attack) testing. This was one of the options tested before vectoring thrust capibilities was perfected to the an actual useable state it is today.

[Pilotasso]

Yeah But Unless the aircraft has internal bays for weapons I just dont see forward swept fighters. Since the wings are swept forwards any excessive deflection of the wings, or oscilation, would make the tips bend backwards wich would potentiate the aerodynamic forces to do the same, only with much greater forces, ripping them off with the torque.

[diveplane]

niknamed berkut =golden eagle

 

Su-47

 

another vid here

http://www.flightlevel350.com/Aircraft_Sukhoi_Su-30-Airline_Russia_-_Air_Force_Aviation_Video-2568.html

[cool_t]

Nice

 

:thumbup:

 

Pilotaso here is some info for ya.

 

X-29 and link.

 

http://www.nasa.gov/centers/dryden/news/FactSheets/FS-008-DFRC.html

 

[Crusty]

Germans pioneered forward swept wings in 1945

 

 

 

later (1964) they produced the hansa jet..built about 40

 

[Archer_02]

Also, the tips stall AFTER the center of the wing, meaning you still have control even in a stall.