Posts: 11
Threads: 11
Joined: Feb 2010
I am a student of 6th sem engineering. I want to give a seminar on 'Delta wings'.. Please give me the seminar report of the above mentioned topic. Thank you.
Posts: 170
Threads: 16
Joined: May 2010
Delta wing
The delta wing is a wing planform in the form of a triangle, named after the Greek uppercase delta . Its shape when viewed from above looks like a triangle, often with its tip cut off. It sweeps sharply back from the fuselage with the angle between the leading edge (the front) of the wing often as high as 60 degrees and the angle between the fuselage and the trailing edge of the wing at around 90 degrees.
Aerodynamic advantages:
The major advantage of delta wings is that the wing's leading edge remains behind the shock wave generated by the nose of the aircraft when flying at supersonic speeds. Generally a delta will be stronger as the delta's planform carries across the entire aircraft. the delta has a very high stall angle because wing generates a vortex which remains attached to the upper surface of the wing with increasing angle of attack. delta-winged aircraft 'bleed off' energy very rapidly in turns because of the high induced drag of this low-aspect ratio type of wing. flow separation at high angles of attack and high drag at low altitudes forced the invention of variant designs.
variations in design:
In a design called the compound delta, double delta or cranked arrow, the inner part of the wing has a very high sweepback, while the outer part has less sweepback, to create the high-lift vortex in a more controlled fashion, reduce the drag. leading edge extensions in today's planes are an extension of delta wings.
for further details, refer these links:
http://centennialofflight.gov/essay/Evol...Tech10.htm
http://en.wikipediawiki/Delta_wing
Posts: 6
Threads: 4
Joined: Apr 2010