What speed should the wind tunnel be run

Assignment Help Mechanical Engineering
Reference no: EM13701632

A 1/10th scale model of an airplane is to be tested in a wind tunnel that operates with air at a pressure of 20 atmospheres. The plane is expected to fly at a speed of 500 [km/hr]. (a) What speed should the wind tunnel be run? (b) If the drag measured on the model is 337.5 [N], what is the corresponding drag on the full size airplane? Recall that the viscosity is effectively independent upon pressure changes.

Reference no: EM13701632

Questions Cloud

Determine the total entropy change for this process : A 60-kg iron block and a 39-kg copper block, both initially at 76oC, are dropped into a large lake at 9oC. Thermal equilibrium is established after a while as a result of heat transfer between the blocks and the lake water. Determine the total entrop..
Determine the change of the entropy of the entire system : Ten grams of computer chips with a specific heat of 0.3 kJ/kg dot K are initially at 15 degrees C. These chips are cooled by placement in 5 grams of saturated liquid R134a at -38 degrees C.
Determine the angular velocity after : The 0.6-kg mass is supported by two arms of negligible mass. The angle ? of the arms can be varied by changing the force F acting on the slid- ing collar. When ? = 70?, the assembly is rotating freely about the vertical axis with the angular velocity..
Steam is the working fluid in a simple : Steam is the working fluid in a simple, ideal Rankine cycle. Saturated vapor enters the turbine at 8 MPa and saturated liquid exits the condenser at a pressure of 8 kPa. The net power output of the cycle is 100 MA.
What speed should the wind tunnel be run : A 1/10th scale model of an airplane is to be tested in a wind tunnel that operates with air at a pressure of 20 atmospheres. The plane is expected to fly at a speed of 500 [km/hr]. (a) What speed should the wind tunnel be run? (b) If the drag measure..
Liquid in a tube varies with tube diameter : The capillary rise, h, of a liquid in a tube varies with tube diameter, d, gravity, g, fluid density, roe , surface tension, Y, and the contact angle, B. (a) Find the dimensionless form of this statement. (b) If h = 3 [cm] in a given experiment, what..
Determine the heat added to the cycle per kilogram : A closed gas turbine unit uses neon as the working fluid. There are two stages of compression with inter cooling from 480kPa and 290K to a maximum pressure of 2.75MPa with an intermediate pressure of 1149kPa. The regenerator has an effectiveness of 6..
Consider the addition of an afterburner to turbojet engine : Air at 22 kPa, 220K and 250 m/s enters a turbojet engine in flight at an altitude of 10,000m. The diffusor slows the air down to a very low speed relative to its inlet. The pressure ratio across the compressor is 12. The turbine inlet temperature is ..
Steam enters a converging nozzle : Steam enters a converging nozzle at 800 kPa and 280 C with negligible velocity. If the expansion is isentropic, what is the minimum pressure that can be reached in such a nozzle and what is the cross-sectional area at the nozzle throat at this pressu..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Determine the relative humidity and the humidity ratio of

air at 100 o f and 14.7 psia has a dew point temperature of 70o f. determine the relative humidity and the humidity

  The golden gate bridge has a main span of 4200 ft a sag of

the golden gate bridge has a main span of 4200 ft a sag of 470 ft and a total static loading of 21300 lblinear foot.

  Air is compressed adiabatically from 147 psia 70 to 588

air is compressed adiabatically from 14.7 psia 70 to 58.8 psia and 76 btulbm of work is required. neglecting changes

  What are the sound pressure levels at a distance of 300 500

a suppose the sound pressure level at a distance of 100 m from a single wind turbine is 55 db. what is the sound power

  Air flows through a converging adiabatic duct with no loss

air flows through a converging adiabatic duct with no loss. the temperature at the inlet is 400 k. at the outlet the

  Show that the entropy change is greater if the change of

a closed system consists of an ideal gas with constant specific heats that remain constant. the gas undergoes a proces

  The lead electrode is oxodized yeilding at a cell potential

an electromedical cell is composed of pure copper and pure lead electrode immersed in solution of their respective

  Calculate the fraction of the water that condenses and the

air at 80 degrees fahrenheit and 80 percent relative humidity is cooled to 51 degrees fahrenheit at a constant pressure

  The initial temperature of the calorimeter is 201 degrees

in the following experiment a constant-pressure calorimeter containing 100 ml of h20 is used.the initial temperature of

  When kaolinite clay al2si2o5oh4 is heated to a sufficiently

when kaolinite clay al2si2o5oh4 is heated to a sufficiently high temperature chemical water is driven off.a under these

  Although the hume-rothery rules apply strictly only to

although the hume-rothery rules apply strictly only to metals the concept of similarity of cations corresponds to the

  What exposure time is necessary for the concentration of

although ripening of tomatoes can be retarded by low temperatures storage under refrigeration can cause chilling injury

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd