Blown Flap
Blown flaps are a powered aerodynamic high-lift device invented by the British and used on the wings of certain aircraft to improve low-speed lift during takeoff and landing. The process is sometimes called a boundary layer control system (BLCS). They were a popular design feature in the 1960s, but fell from use due to their complex maintenance needs. Today a simpler version can be found on military transport aircraft, although the term is not widely used. Additionally, the early concepts have been built upon by modern engineers to create the circulation control wing, a far more effective device with applications in the modern aviation industry.
Famous quotes containing the words blown and/or flap:
“Hast ever ben in Omaha
Where rolls the dark Missouri down,
Where four strong horses scarce can draw
An empty wagon through the town?
Where sand is blown from every mound
To fill your eyes and ears and throat;
Where all the steamboats are aground,
And all the houses are afloat?...
If not, take heed to what I say,
You’ll find it just as I have found it;
And if it lies upon your way
For God’s sake, reader, go around it!”
—For the State of Nebraska, U.S. public relief program (1935-1943)
“Let Sporus tremble—‘What? That thing of silk,
Sporus, that mere white curd of ass’s milk?
Satire or sense, alas, can Sporus feel,
Who breaks a butterfly upon a wheel?’
Yet let me flap this bug with gilded wings,
This painted child of dirt, that stinks and stings;
Whose buzz the witty and the fair annoys,
Yet wit ne’er tastes, and beauty ne’er enjoys:”
—Alexander Pope (1688–1744)