|Quoting Blackbird (Thread starter):|
What I don't know is how does the airflow behave if the airflow over the leading-edge if the shockwave is equal to the sweep of the wing, but in front of it (like on the XB-70, it has a 72-degree sweep apex, which then quickly tapers to the 65-degree wing-LE -- the shock sweep equals the wings)
|Quoting Blackbird (Reply 2):|
I remember reading something like if the shockwave was in front of the wing you'd get a subsonic flow component or something over the leading edge. If I recall that's why supersonic planes used conical-camber and some highly swept wings used blunt leading-edges. From what I remember it didn't matter if the wave was a normal or oblique shock.
I think it had something to do with the angle of the airflow to the shock or something.
|Quoting Blackbird (Reply 5):|
Then why can you use blunt leading edges and conical cambers on highly swept wings/delta-wings while going supersonic and not have outrageously high drag??
|Quoting Blackbird (Reply 7):|
How much knowledge do you have on supersonic aircraft design?
|Quoting Tdscanuck (Reply 6):|
The sharp profile has low high area/volume ratio and hence lousy heat capacity...you could melt the edges if you're not careful.
|Quoting Blackbird (Reply 13):|
I remember reading in a book about the Concorde that the airflow along the leading edge was subsonic with cambered areas to recoup "suction losses" -- the wing is highly swept and does not look like it would form a normal shock, so it would only form an oblique shock. Then how is the leading edge subsonic?
|Quoting Blackbird (Reply 15):|
What does that mean "the velocity component normal to the leading edge is subsonic?"
|Quoting Blackbird (Reply 19):|
You do realize I don't have an infinite amount of money at my disposal, and I have other things to do for the time being than buy a 185 dollar book. I'll get around to it though.
|Quoting Sovietjet (Reply 18):|
You're questions are interesting...I suggest you pick up a copy of Anderson's "Fundamentals of Aerodynamics"...I bet it will answer a lot of your questions.
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