Publication Date:
2019-07-13
Description:
The optimum design of nacelles that operate over a wide range of aerodynamic conditions and their inlets is described. For low speed operation the optimum internal surface velocity distributions and skin friction distributions are described for three categories of inlets: those with BLC, and those with blow in door slots and retractable slats. At cruise speed the effect of factors that reduce the nacelle external surface area and the local skin friction is illustrated. These factors are cruise Mach number, inlet throat size, fan-face Mach number, and nacelle contour. The interrelation of these cruise speed factors with the design requirements for good low speed performance is discussed.
Keywords:
AIRCRAFT PROPULSION AND POWER
Type:
NASA-TM-81491
,
E-406
,
Congr. of the Intern. Council of the Aeron. Sci.; Oct 13, 1980 - Oct 17, 1980; Munich; Germany*United States|Oct 13, 1980 - Oct 16, 1980; Los Angeles, CA; United States
Format:
application/pdf
