Wind tunnel test section Pm Hm Lm Fp.m Moving belt Drag balance

Q: Consider the common situation in which a researcher is trying to match the Reynolds number of a…

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Q: The drag force acting on a model torpedo, 1/20 the size of the prototype, is measured at 80 N in…

A: The Reynolds number for both prototype and the model must be the same. Therefore, the velocity of…

Q: 1)The model of the torpedo (a military vehicle that goes very fast underwater) as placed in a tank…

A: To obtain the solution of the 1st part of the question, we will apply the Froude model law, which is…

Q: Q.10. To predict the drag on an aircraft at a flight speed of 150 m/s, where the condition of air is…

A: To find: The flow velocity and the scale of the model. Given: The speed of light is up=150 msec. The…

Q: The propeller of a ship is to be studied with a 1:10 scale model. If the propellor opperates close…

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Q: On an alien planet (with unknown gravity), a 5 kilogram object is dropped froim rest 10 meters above…

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Q: aerodynamic derivative X, may be determined from the following expression: X =-pU SCD %3D nere pis…

A: Answer is given below:

Q: A student needs to measure the drag on a prototype of characteristicdimension d p moving at velocity…

A: Assumptions: Incompressible fluid Dynamically similar For the Dynamic similarity the Reynold’s…

Q: 2) When calculate the lift coefficient, the area A in the equation is: a) surface area b) planform…

A: The sum of the components of the pressure and wall shear forces; (a) in the flow direction is called…

Q: The drag on a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a…

A: First we need to calculate the speed of airBy equating the Reynolds no → Re model = Re prototype →…

Q: a test tank will be used to measure the drag of a scale model ship 0.8 m long. This model bears full…

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Q: The drag coefficient in aircraft industry affected by some parameters which are the speed of plane…

A: DRAG COEFFICIENT  Drag Force (D) is defined as the force that opposes the motion of a fluid-filled…

Q: Suppose at certain speed, your car has the air drag force of 290 N and the rolling resistance of 370…

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Q: A 1:20 scale down model of a hydrofoil is tested in a water channel, at velocity of 0.179 m/s. At…

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Q: A scaled model of an automobile vehicle of width 2.44 m and frontalarea 7.8 sq. m was tested in a…

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Q: The power P generated by a certain windmill design depends upon its diameter D, the air density p,…

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Q: 5 Given: A prototype ship is 50 m long and designed for a cruising speed of 10 m/s. The drag is to…

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Q: Calculate the drag force (unit: N) of a sphere particle in 20°C water. Know the diameter of the…

A: Given: diameter of the particle = 1 cm Reynolds number of water = 1 dynamic viscosity of 20°C water…

Q: a) A 1:20 scale model of a surface vessel is used to test the influence of a proposed design on the…

A: given data  a scale of 1:20 drag force on the model = 6 Ib = 26.7 N model speed = 8 ft/sec = 2.44…

Q: Q2. In the design and development competition in a University, a team of students has planned to…

A: Given: The length of the prototype is, Lp=6.5 m. The speed of the prototype is, X=vp=1 ms. The…

Q: The drag equation of an aircraft is given by the equation: Cp = 0.025 + 0.035 CZ The weight of the…

A: Given dataW=120kNA=32m2F=12kNUsing the Drag relation then equation to find speed

Q: In the design and development competition in a University, a team of students has planned to develop…

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Q: A blimp is designed to move in air at "C at 7 m/s. If a 1:20 scale model is tested in water at 20…

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Q: Although we usually think of a model as being smaller than the prototype, describe at least three…

A: There are many situations when the model is larger than that of the prototype. This is done to…

Q: It is required to perform an experimental studies of an airplane in a wind tunnel. For this purpose,…

A: Given data:

Q: A 1:20 scaled-down model of a hydrofoil is tested in a water channel, at a velocity of 0.179 m/s. At…

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Q: A paramecium is an elongated unicellular organism with approximately 50 μmin diameters and 150 μmin…

A: Given : D = 70μm P = 2 PW To find : Swimming speed

Q: A student needs to measure the drag on a prototype of characteristic length d, moving at velocity U,…

A: For solution refer below images.

Q: 6.10 A sphere advancing at 1.5 m/s in a stationary mass of water experiences a drag of 4.5 N. Find…

A: To find : The flow velocity and drag. Given: For sphere 1, The velocity of water flow is vw=1.5 ms.…

Q: 8.1. An airplane wing of 3 m chord length moves through still air at 15°C and 101.3 kPa at a speed…

A: Velocity is the forward motion of a body. It is equal to the distance covered by the body per unit…

Q: a test tank will be used to measure the drag of a scale model ship 0.8 m long. This model bears full…

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Q: Question (1): (A) The pressure difference Ap of air that flows through a fan, as shown in Figure…

A: Use Buckingham pi theorem to approach this problem,

Q: Characteristics of a small underwater craft are studied under dynamic similarity conditions in a…

A: Froude number is defined as the ratio of the root of inertia force to the gravity force. Reynolds…

Q: As shown in the figure below, a "noisemaker" B is towed behind a minesweeper A to set off enemy…

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Q: b) When tested in water at 20°C flowing at 2 misAlan 8 cm diameter sphere has a measured drag force…

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Q: The power P generated by a certain windmill design dependson its diameter D , the air density ρ ,…

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Q: Consider that you are in an area of Seattle where the wind is blowing at 40 km/h with a temperature…

A: The above-given question is related to the forced convection on a cylinder. So to obtain the Heat…

Q: The actual car will be running at V= 35 km/h at p-1 atm and T-0°C (the air density and viscosity are…

A: →For prototype:-velocity, vp=35kmph=9.722m/sair density, ρp=1.292kg/m3kinematic viscosity,…

Q: test tank will be used to measure the drag of a scale model ship 0.8 m long. This model bears full…

A: Given Data Lm=0.8 m Lp=40 m Vp=10 m/s