522
P. Liu
Fig. 7.100 Multi-element airfoil flow
Fig. 7.101 Various types of leading and trailing edge lifting devices
In the 1950s, NASA in the United States began to study the above problems. Until 1975, there were major breakthroughs in multi-element wing
flow problems. A.M.O. Smith proposed that the beneficial effects of slats
(flap) on multi-element wing flow are the gap effect of the front wing; circulation effect; dumping effect; pressure recovery after leaving the object surface;
and each wing element begins a new boundary layer. The main effects on
improving lift are (as shown in Fig. 7.102) as follows:
P. Liu
Fig. 7.100 Multi-element airfoil flow
Fig. 7.101 Various types of leading and trailing edge lifting devices
In the 1950s, NASA in the United States began to study the above problems. Until 1975, there were major breakthroughs in multi-element wing
flow problems. A.M.O. Smith proposed that the beneficial effects of slats
(flap) on multi-element wing flow are the gap effect of the front wing; circulation effect; dumping effect; pressure recovery after leaving the object surface;
and each wing element begins a new boundary layer. The main effects on
improving lift are (as shown in Fig. 7.102) as follows: