WorksheetsTransonic flow over wing CO5
Total questions: 9
Worksheet time: 11mins
The freestream Mach number which gives sonic velocity somewhere on the boundary of an object placed in the fluid stream is called
(a)
Which of the following design features of an aircraft wing will increase Mcrit ?
swept wing
thinner wing section
less t/c
all the above
An aircraft enters into transonic regime when it reaches the Mcrit. Say True or False.
True
False
Which of the following statement is incorrect with respect to transonic area rule?
cross-sectional area of the body should have a
smooth variation with longitudinal distance along the body
there should be no
rapid or discontinuous changes in the cross-sectional area distribution
the body cross section should be decreased
in the vicinity of the wing
none of the above
Although the supercritical airfoil and an equivalent
standard airfoil may have the same critical Mach number, the drag-divergence
Mach number for the supercritical airfoil is much lesser. Say True or False?
True
False
Choose the incorrect statements?
(i) Supercritical airfoils are
designed to operate far above the critical Mach number
(ii) Drag divergence Mach number decreases with supercritical airfoils
(iii) Shock strength is reduced as a result of supercritical airfoil
(iv) boundary layer separation is more severe
(i), (iii)
(i), (iv)
(ii), (iii)
(ii), (iv)
Which aircraft utilizes area rule, F102 or F102A?
(a)
The flowfield between the shock wave and the body is defined as the
(a)
Which are the important flow phenomena that occur in hypersonic flow over a body?
Thin shock layers
Vorticity interaction
Aerodynamic heating
High speed
