Читать книгу Flight Theory and Aerodynamics - Joseph R. Badick - Страница 88

An airfoil or, more properly, an airfoil section, is commonly shown as a vertical slice of a wing (see Figure 3.13). In discussing airfoils in this chapter, the planform (or horizontal plane) of the wing is ignored as it will be discussed in Chapters 4 and 5. Keep in mind during this discussion that an airfoil is also found on the vertical stabilizer, horizontal stabilizer, and rotor blades. Wingtip effects, sweepback, taper, wash/out or wash/in, and other design features are not considered. No single airfoil design is perfect for every flight situation: wind tunnel tests, and computer‐generated designs dictate what airfoil is best for the mission of the aircraft.

Figure 3.11 Antiservo Tab.

Source: U.S. Department of Transportation Federal Aviation Administration (2008a).

Figure 3.12 Secondary control surfaces and their location.

Source: U.S. Department of Transportation Federal Aviation Administration (2018).

Figure 3.13 Airfoil section.

Figure 3.14 Airfoil terminology.