3. The single-slotted flap (Figure

3. The single-slotted flap (Figure 5.54-3) is very similar to a plain flap, except it has two modifications. First, the leading edges of these two trailing edge flaps are different, as shown in Figure 5.51. The leading edge of a single-slotted flap is carefully designed such that it modifies and stabilizes the boundary layer over the top surface of the wing. A low pressure is created on the leading edge that allows a new boundary layer to form over the flap, which in turn causes the flow to remain attached to a very high flap deflection. The second modification is to allow the flap to move rearward during the deflection (i.e., the slot). The aft movement of a single-slotted flap actually increases the effective chord of the wing, which in turn increases the effective wing planform area. The larger wing planform area naturally generates more lift.

結果 (繁體中文) 2:

3. 單槽活門（圖5.54-3）與普通活門非常相似，只不過有兩次修改。首先，這兩個後緣活門的前緣不同，如圖 5.51 所示。單槽活門的前緣經過精心設計，可修改和穩定翼子板頂部表面的邊界層。在前緣上產生低壓，允許在活門上形成新的邊界層，進而導致流量保持連接到非常高的活門偏轉上。第二個修改是允許活門在偏轉（即插槽）期間向後移動。單槽活門的尾部運動實際上增加了機翼的有效弦，這反過來又增加了有效的翼形平面面積。較大的翼形平面區域自然產生更多的提升。

結果 (繁體中文) 3:

三。單縫襟翼（圖5.54-3）與普通襟翼非常相似，只是它有兩個修改。首先，這兩個後緣襟翼的前緣不同，如圖5.51所示。單縫襟翼的前緣經過精心設計，使其能够修正和穩定機翼上表面的邊界層。在前緣產生一個低壓，使得在襟翼上形成一個新的邊界層，從而使氣流保持附屬於非常高的襟翼偏轉。第二個修改是允許襟翼在偏轉期間向後移動（即槽）。單縫襟翼的尾部運動實際上新增了機翼的有效弦，從而新增了機翼的有效平面面積。機翼平面形狀越大，自然產生的升力就越大。