A marked increase in drag and a loss of lift and control on an aircraft approaching the speed of sound.
- ‘In the case of high speed aircraft, selection of mean twist was farther complicated by the need to avoid local shock stall at high speed.’
- ‘As typical examples of these we may cite the use of flaps to give high lift, sweptback wings to avoid shock waves and shock stall, and boundary layer suction to reduce drag.’
- ‘I think that was dreamed up to describe what became known as ‘shock stall.’’
- ‘The use of thin supercritical wing sections, low lift at operation point, and wing back sweep are among the most effective methods of postponing the shock stall to higher speeds.’
- ‘For this reason the effect is called shock stall.’
We take a look at several popular, though confusing, punctuation marks.