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Lift (force): Quiz


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Question 1: In practice, this is done by applying the ________, which uniquely prescribes the circulation for a given geometry and free-stream velocity.
Fluid dynamicsKutta conditionLift (force)Horseshoe vortex

Question 2: If the air density and temperature are the same above and below a wing, a naive application of the ________ requires that the pressure also be the same.
EntropyIdeal gas lawStatistical mechanicsVan der Waals equation

Question 3: Under certain conditions — for instance resonance or strong spanwise ________ of the lift force — the resulting motion of the structure due to the lift fluctuations may be strongly enhanced.
VarianceNormal distributionCorrelation and dependencePearson product-moment correlation coefficient

Question 4: Lift can be calculated using ________ theory by imposing a circulation.
Bernoulli's principleComplex numberD'Alembert's paradoxPotential flow

Question 5: In the last principle, the pressure depends on the other flow properties, such as its mass density, through the (thermodynamic) ________, while the shear stresses are related to the flow through the air's viscosity.
Ideal gas lawEquation of stateEntropyVan der Waals equation

Question 6: In this last case, the term ________ is often used.
TireOversteerDrifting (motorsport)Downforce

Question 7: It is often used by practicing aerodynamicists as a convenient quantity in calculations, for example ________ and lifting-line theory.
AirfoilWingtip deviceStall (flight)Lift (force)

Question 8: [32] [33] The effect is also used in high-lift devices such as a ________.
Vortex generatorBlown flapEjection seatFlap (aircraft)

Question 9: The stagnation streamline leaves the airfoil at the sharp trailing edge, a feature of the flow known as the ________.
Kutta conditionLift (force)Fluid dynamicsHorseshoe vortex

Question 10: Lift is generated in accordance with the fundamental principles of ________.
PhysicsParticle physicsUniverseQuantum mechanics


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