Explain briefly what is meant by drag and its form.
Q: Describe how Foilsim calculates lift and drag.
A: For students studying about the lift of airfoils and wings, FoilSim II is very good software. The…
Q: What is the main cause of the increase in drag when you increased the angle of attack?
A: Drag is the aerodynamic effect that affects the motion through air. It is generated due to relative…
Q: Mention the name of a technique which can be used to control the boundary layer
A: Whenever there is relative movement between a fluid and a solid surface, whether externally round a…
Q: Determine the skin drag and power in Problem 5, if the surface of the tanker has a roughness of 1.5…
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Q: The drag coefficient for a car with a frontal area of 26 ft? is being measured in an 8 ft x 8 ft…
A: The air flowrate through the tunnel is given as Q=500,000 ft3/min, and the cross sectional area of…
Q: A shuttlecock is launched from the ground with an initial speed of 37.3135 m/s at an angle of 7.8471…
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Q: Calculate the form drag on the wings.
A: Given Length = 9.144 m Width = 0.9144 m Coefficient of drag = 0.01 Coefficient of lift = 0.3…
Q: A shuttlecock is launched from the ground with an initial speed of 34.6092 m/s at an angle of 5.462…
A: Given When drag force becomes equal to weight net force is zero Final velocity can be determined as
Q: The drag coefficient of a car at the design conditions of 1 atm, 70°F, and 60 mi/h is to be…
A: The drag force on an object can be expressed as, Given data in SI units is The density of air at…
Q: Figure 2 shows a 0.25 kg kite with an area of 0.65 m² flies in a 25 km/h wind such that the…
A: Vector is a physical quantity that has magnitude and direction both. Scalar is a physical quantity…
Q: When testing a new car, the car drives with a constant speed v = 140 km/h. The power of car’s engine…
A: Given data: The constant speed is of the car is v = 140 km/h. The power of car's engine is P = 120…
Q: A shuttlecock is launched from the ground with an initial speed of 33.3163 m/s at an angle of 8.1977…
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Q: What is the effective angle of attack ? What is the induced drag ? Show them by drawing a sketch and…
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Q: From a low pressure-center the pressure increases by 1 kPa eastward across a distance of 1000 km.…
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Q: Explain the effect of aerodynamic drag and lift on aerofoils.
A: Aerodynamic drag is defined as the amount of force acting in the opposite direction of a moving…
Q: sign is exposed to a 15 m/s wind on a standard day. Estimate the drag on the sign if (a) the sign is…
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Q: Consider a circular cylinder in a hypersonic flow, with its axisperpendicular to the flow. Let φ be…
A: Given data
Q: explain the effect of aerodynamic drag and lift on aerofoils
A: As an aircraft's speed increments, drag on the flying machine generally increments much speedier.…
Q: wing and induced drag coefficient!
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Q: An aircraft has a total mass of (1.48x10^2) kg and a wing area of (2.0000x10^1) m². It operated with…
A: For the given situation, we first need to obtain the trust required and the take-off velocity for…
Q: 2.A fluid at a temperature of 75 oC flows at a speed of 10 m/s across a pipe outer diameter of 5…
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Q: Fairings are attached to the front and back of a cylindrical body to make it look more streamlined.…
A: Drag forces arise from pressure differences over the body (due to its shape) and frictional forces…
Q: 3. Airfoil wings that redirect air to cause a downforce , it is also cause a) Pressure drag b)skin…
A: Its answer is c) induced drag.
Q: A truck having projected area of 6.5 m² and travelling at 72 km/h has a total resistance of 1.6 kN.…
A: Given data: The projected area is A=6.5 m2 The speed of the truck is v=72 km/hr=20 m/s The total…
Q: Explain how Foilsim determines lift and drag.
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Q: The net drag of a moving body is produced by both pressure and shear stress effects. In most…
A: The net drag of a moving body is produced by both pressure and shear stress effects. In most…
Q: Discuss the importance of lift and drag with the help of examples.
A: we will discuss the importance of drag & lift by an example of aeroplane aerofoilsection
Q: What is the Effect of wing plan form (taper ratio and wing twist) and aspect ratio(AR) on the…
A: Wing plan form affects drga coefficient and lift. In this aspect ratio is given as ratio bet wind…
Q: A 3 inch diameter steel sphere achieve a terminal velocity of 122 inch per seconds when dropping…
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Q: In a well designed wing, which of the following would best describe the lift to drag ratio? O a.…
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Q: - Use FoilSim to investigate how an aircraft wing produces lift and drag by changing the values of…
A: An airfoil produces lift by applying a downward constrain on the air because it flows past.…
Q: A shuttlecock is launched from the ground with an initial speed of 36.9838 m/s at an angle of 9.9728…
A: given information: The initial speed of shuttle cock (u) = 36.9838 m/s angle made by initial…
Q: The manufacturer of a car reduces the drag coefficient of the car from 0.38 to 0.33 as a result of…
A: Given data: The initial drag coefficient, cd1 = 0.38. The final drag coefficient, cd2 = 0.33. The…
Q: How to get more accurate data for lift coefficient (Cl) and drag coefficient (Cd) compared to…
A: Foilsim is the software used to simulate the flow of fluid around various shapes. It displays the…
Q: Which equations are obtained for stokes', Newton's and transition regimes if centrigugal forces are…
A: The general equation for the stokes, newton regime used for the centrifugal forces effective in…
Q: What is the main cause of the increase in drag when you increased the angle of attack?
A: As a wing moves through the air , the airfoil is inclined to the flight direction at an angle. As…
Q: decimal places on final answer, and in scientific notation for less than 1 values. Include the units…
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Q: and roof closed. What is the percent increase of horsepower needed to maintain the speed if the…
A: for solution refer below images. From the given dataCdc=0.32{ with window and roof closed }Cdo=0.43…
Q: Explain
A: given: explain lift force and lift coefficient
Q: n aircraft has the drag polar, C_d=0.015+0.05C_l^2 For a lift coefficient of 0.5, find the value of…
A: Given:Drag polar, Cd=0.015+0.05Cl2Lift coefficient, Cl=0.5
Q: Required information An automobile has a characteristic length and area of 8 ft and 60 ft2,…
A: first of all obtain the properties of air at sea level from Table A6, i.e. Properties of the…
Q: Explain the causes of Lift and Drag on the illustration below:
A: The component of the aerodynamic force that is perpendicular to the flow direction is known as…
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- 7. A 2700-lb car is traveling @ sea level at a constant speed. Its engine is running at 4500 rev/min. and is producing 175 ft-lb of torque. It has a drivetrain efficiency of 90%, a drive axle slippage of 2%, 15-inch-radius wheels, and an overall gear reduction ratio of 3 to 1. If the car's frontal area is 21.5 ft, what is its drag coefficient?5) Explain the causes of Lift and Drag on the illustration below: Airfoil Lift motion Drag a.Answer correctly. Here is the Translation. "A luxury sports car has an area of 2 m² and there is a drag coefficient of 0.29 at a speed of 90 km/h. Calculate the drag force exerted on the car at this speed"
- The drag polar for the ASW 27B high performance sailplane is: CD = 0.01 +0.02CL2. What is its maximum lift-to-drag (L/D) ratio? 18 25 35 70A thin sheet of fiberboard weighs 90 N and lies on a rooftop,as shown in Fig. . Assume ambient air at 20°Cand 1 atm. If the coefficient of solid friction between boardand roof is σ ≈ 0.12, what wind velocity will generateenough fluid friction to dislodge the board?Aircraft flying at an altitude of (3 Km) with a velocity of (100 m/sec). The planform area of the wing is (206 m² ). Find the overall drag force acting on this aircraft if you have the following data :- Aspect ratio= 10, Weight of the aircraft = 7.5 x 105 kg.m/s² Span efficiency factor = 0.95 Wing cross section is NACA 4412 airfoll Drag coefficient = 0.006
- A propeller-driven aircraft has an in-flight weight of 4,105 lb (equivalent to a mass of 1,862 kg) and is cruising at a true airspeed of 120 kts. The lift-to-drag ratio of the aircraft is 8.2. If the propeller efficiency, ηp, is 0.8, then how much brake power is required for flight? Work through this problem in both USC and SI units.Describe the downwash angle of a finite span wing and induced drag coefficient!Q1 A car is traveling at sea level at a constant speed. It weighs 2500-lbs, has a frontal area of 20 ft² and has a 90% drivetrain efficiency. Its engine runs at 4000 rev/min, producing 168 ft-lb of torque. The drive axle slippage of 2%, 14-inch-radius wheels, and an overall gear reduction ratio of 2.5 to 1. What is its drag coefficient?