Wind loading is a primary consideration in the design of the supporting mechanisms of billboards, as evidenced by many billboards being knocked down during high winds. Determine the wind force acting on an 12-ft-high, 20-ft-wide billboard due to 55-mi/h winds in the normal direction when the atmospheric conditions are 14.3 psia and 40°F.

Q: The local atmospheric pressure of Karabuk is 98.39 kPa. Air at this pressure and at 25°C flows with…

A: To determine the friction coefficient for the flow of air over a flat plate, we can use the concept…

Q: Thrust is required to propel an airplane at a fi nite forwardvelocity. Does this imply an energy…

A: The force that allows the aeroplane to move forward is the thrust force. Thus the thrust force is…

Q: What are the three main components of the standard atmosphere and which is most significant to…

A: The standard atmosphere is a model of the Earth's atmosphere that is widely used as a reference for…

Q: How important is the study of aerodynamics in designing an aircraft and the effect on performance

A: How important is the study of aerodynamics in designing an aircraft and the effect on performance?

Q: A long 8cm diameter steam pipe whose external surface temperature is 90°C passes through some open…

A: The diameter of the steam pipe, D = 8cm=0.08 mThe external surface temperature, The air…

Q: A skydiver skydives from the 700 hPa level. It's a warm, dry autumn day with a surface temperature…

A:

Q: 1 m² at 0 ⁰C and 1 atm pressure during a 244 hour operation at 8 m/s wind speed. Calculate the…

A: Given Data: The given area, A = 1 m2. The temperature, T = 0°C. The pressure, P = 1 atm. The…

Q: The temperature of a flat plate is Tw = 3Te , where Te is the static temperature of the high…

A: Write the expression for the temperature of the flat plate in case of more relevancy of aerodynamic…

Q: Given the following measurements of mean winds and temperature from a 200-m mast in Netherlands on a…

A:

Q: A cylindrical bottle with a diameter of 10 cm and a height of 30 cm contains cold water at 3 °C. The…

A: Given data: d=10 cmh=30 cmTc=3°CT∞=27°CTf=11°C Need to determine the average wind speed.

Q: Consider a semi truck traveling at 55 mph on the freeway. The ambient air is at 1 atm and 80°F. The…

A:

Q: Assuming that air is dry. A static air has a ground atmospheric pressure of 100 kPa and a surface…

A:

Q: 2. You are working for a glider manufacturer and have been asked to analyse the laminar boundary…

A: For the solution refer below images.

Q: A site evaluated for a wind farm is observed to have steady winds at a speed of 8.5 m/s. Determine…

A: Given: The steady speed of the wind is v=8.5 m/s. The expression for wind energy is, E=12mv2 Here…

Q: The summit of a mountain is 3290 m higher than a point in the foothills. Assume that the atmospheric…

A:

Q: Consider a large commercial airplane cruising at a speed of 1050 km/h in air at an altitude of 10 km…

A: Given,  Speed of aeroplane (V)= 1050 km/h Altitude (h)= 10 km temperature (T)=  −50°C = -50+273=223…

Q: For the next phase of the experiment, Poloy wants to determine how far the potato projecti n reach…

A:

Q: Water at a velocity of 1.0 m/s flows along the length of one side of a flat plate that is 2 meters…

A:

Q: ent of a vehicle increases when its windows are rolled down or its sunroof is opened. A sports car…

A: The frontal area of the car, A = 18 ft2.Drag coefficient when the sunroof is closed, CD1 = 0.32.Drag…

Q: What effect does increasing the Reynolds number have on coefficient of lift and drag?

A: we know that Reynolds no. is defined as the ratio between flow inertia and viscosity.

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: A person extends his uncovered arms into the windy air outside at 1 atm and 60°F and 25 mi/h in…

A: Given data: The properties of air at 1 atm and 60 degrees Fahrenheit is

Q: friction drag coefficient

A: There are some assumptions as follows: (1)  steady and…

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: If a 20 hp fishing boat motor can pull a 1150 kg boat with passengers of total mass 120 kg at a…

A: Given Data→P = 10 HP =10×746 watt =7460 wattm =1150 kgmass of passangers (M) =120 kgv = 13mswe need…

Q: An aircraft flies with a lifting area of ​​40m2 and a weight of 60 kN. the lift coefficient is 0.24…

A: Given: Lifting area (A)=40m2 Weight (W)=60kN Lift coefficient (CL)=0.24 Total resistance or drag…

Q: Light oil at 75°F flows over a 22-ft-long flat plate with a free-stream velocity of 6 ft/s.…

A: Given data: Length of plate, L = 22 ft Stream velocity, V = 6 ft/s Temperature, T = 75°F

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: What amount of energy is required to change a spherical drop of water with a diameter of 2.20 mm to…

A:

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