486
P. Liu
it is possible to reduce the shock resistance during transonic or supersonic
flight when designing the aircraft, and improve the flight performance. The
area rule also provides a simplified method of estimating the shock resistance
of an aircraft, replacing the calculation of the shock resistance of a complex
aircraft by a simple equivalent rotating body. Therefore, the area rule is widely
used in the design of transonic and supersonic aircraft, as shown in Fig. 7.46)
and the winglet proposed in the 1970s (as shown in Fig. 7.47); these play a
significant role in modern aircraft design.
Supercritical wings are widely used in the new generation civil aircraft
and military transport aircraft due to their high aerodynamic efficiency, high
cruise Mach number (as shown in Fig. 7.48), and large relative thickness
of the wing (as shown in Fig. 7.49). This type of airfoil was also used in
the design of supercritical fighters which was adopted by almost all transonic
aircraft after the 1980s.
Along with the vigorous development of the world civil aviation market
and the progress of transonic aerodynamics, the concept of supercritical airfoil
has experienced the whole stage of concept development, theoretical maturity, design and experiment to model application since its introduction, and
has perfected and accumulated a lot of successful model usage experience.
NASA has publicly released three generations of supercritical airfoil (as shown
Fig. 7.46 Indented fuselage of supersonic aircraft (area rule)
P. Liu
it is possible to reduce the shock resistance during transonic or supersonic
flight when designing the aircraft, and improve the flight performance. The
area rule also provides a simplified method of estimating the shock resistance
of an aircraft, replacing the calculation of the shock resistance of a complex
aircraft by a simple equivalent rotating body. Therefore, the area rule is widely
used in the design of transonic and supersonic aircraft, as shown in Fig. 7.46)
and the winglet proposed in the 1970s (as shown in Fig. 7.47); these play a
significant role in modern aircraft design.
Supercritical wings are widely used in the new generation civil aircraft
and military transport aircraft due to their high aerodynamic efficiency, high
cruise Mach number (as shown in Fig. 7.48), and large relative thickness
of the wing (as shown in Fig. 7.49). This type of airfoil was also used in
the design of supercritical fighters which was adopted by almost all transonic
aircraft after the 1980s.
Along with the vigorous development of the world civil aviation market
and the progress of transonic aerodynamics, the concept of supercritical airfoil
has experienced the whole stage of concept development, theoretical maturity, design and experiment to model application since its introduction, and
has perfected and accumulated a lot of successful model usage experience.
NASA has publicly released three generations of supercritical airfoil (as shown
Fig. 7.46 Indented fuselage of supersonic aircraft (area rule)