It was not the size that made me think it would be unlikely but the speed. This prototype was designed to fly at 2000kph right? The engine is going to perform differently at 2000kph vs 500kph. I suppose that if they did not turn it all the way up and just wanted to see it fly then that serves a purpose but shot of that what was gained?

I understand that the engine would have to overcome drag to increase the speed, but that engine has the force to break the frame of that plane. Thats all I am saying.

I only got the first picture the rest did not display.

The German wind tunnels did not surprise me. Good for them and US.

Why does the delta shape cause a vortex at high angles of attack and what makes it bound? Usually the lift per aoa is not determined by the shape of the wing but by the airfoil. What about the delta makes this beneficial votex?

The delta compared to a swept wing of similar area is less efficient at speeds below m1. But are more efficient above m1 provided that the delta is inside the shock wave of the plane. I do not have my books with me and I am probably wrong but this is how I remember it right now.

Take a look at the pictures below and let me knwo which ones are deltas.

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The Muslim Brotherhood “must understand that their work in America is a kind of grand Jihad in eliminating and destroying the Western civilization from within and ‘sabotaging’ its miserable house by their hands..." — Mohamed Akram. http://jihadwatch.org/