A 17,000-kg tractor-trailer rig has a frontal area of 9.2 m2, a drag coefficient of 0.96, a rolling resistance coefficient of 0.05 (multiplying the weight of a vehicle by the rolling resistance coefficient gives the rolling resistance), a bearing friction resistance of 350 N, and a maximum speed of 110 km/h on a level road during steady cruising in calm weather with an air density of 1.25 kg/m3. Now a fairing is installed to the front of the rig to suppress separation and to streamline the flow to the top surface, and the drag coefficient is reduced to 0.76. Determine the maximum speed of the rig with the fairing.

Q: Calculate lift, drag and (T/W ratio) for an aeroplane with velocity 500 m/s, wing area 45 m2 , a…

A: Given data U∞=500 m/sA=45 m2CD=0.05CL=0.9

Q: Force acting on a truck (frontal area of 2.01 m?) in the flow direction as shown is measured…

A: A=2.01 m2F=x+100 N where x=190.6  soF=190.6+100 F=290.6 NP0=1 atm T0=20 °CU=95kmhU=95×518=26.388…

Q: Example 3 The drag coefficient of a car increases when the sunroof is open, and it requires more…

A:

Q: Explain how the three wing planforms, shown below, could while having different have the same local…

A: Given Wing Planforms To find Local lift distribution is elliptical different local lift coefficient

Q: A shuttlecock is launched from the ground with an initial speed of 37.3135 m/s at an angle of 7.8471…

A:

Q: A jet airplane weighs 160,000 N and has a zero-lift drag coefficient of 0.008 and a wing area of 42…

A: Given:W=160000 NCD=0.008A=42 m2v=100 m/sr=11.5 m/sT=27000 NLift coefficient,…

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: By which part of the Aircraft is mainly produced the "Induced drag" ??

A: Lift causes induced drag, which is unavoidable.

Q: A shuttlecock is launched from the ground with an initial speed of 33.3163 m/s at an angle of 8.1977…

A:

Q: The power delivered to the wheels of a car is used to overcome aerodynamic drag. Compare the amount…

A:

Q: A jet airplane weighs 160,000 N and has a zero-lift drag coefficient of 0.008 and a wing area of 42…

A: Write the given data for the airplane.     W=160000 NCD0=0.008    A=42 m2     v=100 m/s    rc=11.5…

Q: A skydiver jumps from (5.5000x10^3) m with no parachute into a giant net. The mass of the skydiver…

A: Given data Mass of skydiver = m = 1.05 x102 kg = 105 kg  Projected Area = A = 0.45 m2 Pressure = P =…

Q: A 70 kg bicyclist is riding her 15 kg bicycle downhill on a road with a slope of 8° without pedaling…

A:

Q: A small aircraft has a wing area of 37 m2, a lift coefficient of 0.45 at takeoff settings, and a…

A: Given data Wing area = 37 m2 Lift coefficient = 0.45 Total mass = 4300 kg Speed = 300 km/h =83.33…

Q: A skydiver jumps from (5.000x10^3) m with no parachute into a giant net. The mass of the skydiver is…

A: Given data: Mass of skydiver = m = 1.05 x 102 kg = 105 kg Projected Area = A = 0.45 m2 Pressure = P…

Q: A streamlined experimental solar car has a frontal area of 0.48 m² and an expected coefficient of…

A:

Q: A new car is introduced and has a drag coefficient of 0.30 and a frontal area of 1.95 sqm and is…

A:

Q: An airplane is cruising at a velocity of 950 km/h in air whose density is 0.526 kg/m3. The airplane…

A: step-1   given data      velocity (v) = 950 km/hdensity of air = 0.526 kg/m3area of wing (A) = 90…

Q: A body travels through 60° standard air at 60 mph, and 5.5 hp is required to maintain this speed. If…

A:

Q: When the "Area rule" is applied, which aerodynamic coefficient it affects the most? O drag…

A: According to area rule two panes with same longitudinal cross sectional area distribution have same…

Q: Explain how Foilsim determines lift and drag.

A:

Q: Consider a flat plate at zero angle of attack in an airflow at standard sea level conditions (p∞ =…

A: Given data: Sea level conditions: P∞=1.01×105 N/m2, T∞=288K, μ∞=1.7894×10-5 kg/(m.s) Also for air…

Q: Two steel spheres of diameters d, and d₂ where d₂ = 2d₁, are dropped from rest at the free surface…

A:

Q: A 0.80-m-diameter, 1.2-m-high garbage can is found in the morning tipped over due to high winds…

A: Draw diagram of can when it is just to lift about point P, Given

Q: An airplane has a mass of 50,000 kg (without load), a wing area of 360 m2 , a maximum lift…

A:

Q: The forming section of a plastics plant puts out a continuous sheet of plastic that is 1.2 m wide…

A: Given: The width of the plastic sheet is w = 1.2 m. The thickness of the plastic sheet is t = 2 mm.…

Q: (a) A luxury sports car has a frontal area of 23.1 ft and a 0.24 coefficient of drag at 80 mph. How…

A:

Q: During flow over a given slender body such as a wing, the lift force, the upstream velocity, and the…

A: Answer : The lift force depends upon Density of fluid Upstream Velocity Size, shape and orientation…

Q: In a well designed wing, which of the following would best describe the lift to drag ratio? O a.…

A:

Q: ler angles of attack, which is associated wi Diffuser effect Дифузорно течение O a decrease in Lift…

A: Solution ;

Q: A 2-m-long, 0.2-m-diameter cylindrical pine log (density = 513 kg/m3) is suspended by a crane in the…

A: Given, The density of the log, ρ=513 kg/m3 The diameter of the log, D=0.2 m The length of the log,…

Q: At subsonic speeds, how do the lift coefficient CL and drag coefficientCD for a wing vary with angle…

A: When the angle of attack increases, the flow separation on the upper surface of the wing becomes…

Q: b) Figure Q1(b) shows a smooth flat plate that is 150 mm wide and 500 mm long placed longitudinally…

A: Drag force: The drag force is the force acting opposite to the direction of fluid flow. Due to its…

Q: What is necessary to increase the Lift to Drag ratio and its Maximum value?

A:

Q: A jet plane weighing 29.4 kN and having a wing area of 20 m flies at a velocity of 950 km/h. When…

A: Given: Weight of the plane=29.4kN Area of the wing = 20m2 Velocity of the plane=950km/hr or…

Q: Example 5 The total mass, wing area, cruising speed, and air resistance power of a small aircraft…

A: Givenm=1800kgA=42m2V=280 km/hr =280×1033600=77.78m/sPa=190kWH=4000m

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: Water at 10°C flows over a 4.8-m-long flat plate with a velocity of 1.15 m/s. If the width of the…

A: Given, T = 10°C L = 4.8 m v = 1.15 m/s d = 6.5 m ρ = 999.7 kg/m3 µ = 1.307×10-3 kh/m.s f = ?

Q: 8. A ski lift has a one-way length of 1 km and a vertical rise of 200 m. The chairs are spaced 20 m…

A: The Answer is below

Q: What is the effect of weight on maximum endurance and maximum range? What happens to maximum…

A:

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: What is induced drag on wings? Can the induced drag be minimized by (1) long and narrow wings or (2)…

A: Given question? What is induced drag on wing?  Can it be minimized by wing shape?

Q: Calculate the Road load power for the case Toyota Prius (fronatal area =0.8m2 sliding over a street…

A: Given data  for the case Toyota Prius fronatal area=0.8m2  coefficient of rolling resistance…