Air in the wind tunnel be pressurized to scale

Assignment Help Mechanical Engineering

Reference no: EM13720701

A model of an airplane is to be tested at 20°C in a wind tunnel. The model is built to 1/12th scale. In order to match both the Mach number and the Reynolds number of the plane, the wind tunnel is pressurized. To what pressure (in atm) should the air in the wind tunnel be pressurized to scale both the Reynolds number and Mach number accurately?

Reference no: EM13720701

Questions Cloud

Determine the maximum compression in each of spring bumpers : The train engine on the left, A, is at rest, and the one on the right, B, is coasting to the left. If the engines are identical, use numerical values to show how to determine the maximum compression in each of the spring bumpers that are mounted in t..

About the polutry farm : A polutry farm owns 100 laying hens. Each week a hen can either lay 12 eggs or hatch 4 eggs, but not both. At the end of the four-week period all eggs and chicks will be sold: an egg will bring 10 cents, and a chick will bring 60 cents.

Solve using pr data from the relevant table : Air undergoes a process from T1 = 645 K, p1 = 12 bar to a final state where s2 = s1, p2 = 1 bar. Employing the ideal gas model, determine the final temperature T2, in Fahrenheit. Solve using pr data from the relevant table.

What is the sensible heat ratio : At a site at 5000ft (1500m) air is cooled from 80F (27C) dry-bulb temperature and 75F (24C) wet-bulb temperature to saturation at the 55F outlet of a cooling coil. How much water is removed? How much latent heat is removed and how much sensible heat...

Air in the wind tunnel be pressurized to scale : A model of an airplane is to be tested at 20°C in a wind tunnel. The model is built to 1/12th scale. In order to match both the Mach number and the Reynolds number of the plane, the wind tunnel is pressurized. To what pressure (in atm) should the air..

Assume a labor rate and burden rate : Assume a labor rate of $50.00/hr and a burden rate of $25/hr. Assume a surface speed of 2000 ft/min. The number of teeth on the cutter is 4. The feed is 0.005 in/tooth. The depth of cut is 0.020”. The width of cut is equal to the diameter of the t..

Estimate the mass flow rate of the water exiting the faucet : A water tower sits atop a residential building as shown in the figure below. A 0.3m X 0.3m patch was used to repair damage from a recent storm. Water is supplied to the building via a 0.2m diameter main that connects to a faucet in the building's cou..

Determine the mass flow rate of combustion gases : Water enters the steam generator of the power plant shown in the figure at 7MPa, 50 degrees C, and exits at 7MPa, 600 degrees C. The steam is then fed into a well-insulated turbine, developing a power output of 31.6 MW before exiting the turbine as a..

Find the actual and theoretical air-fuel ratio : Write the combustion equation for the complete combustion of methane in a furnace chamber with 200% theoretical air and 20% percent excess air. Take into account that some of the oxygen is lost to the surface wall material of the furnace. Find the ac..

User Account

All Pages