Engineering, 12.05.2021 02:30 swelch2010

You have been tasked to investigate lift and drag forces around airfoils exposed to hypersonic flows. You are specifically asked to experimentally characterize both forces employing a force balance system in pressurized wind tunnel experiments. With this type of system, a load cell is used to measure the lift and drag forces in an airfoil. Knowing that both forces are expected to vary non-linearly with Reynolds number, Mach number, and angle of attack, please answer at the best of your knowledge the following questions: a) What are the response variables of such an experimental setting? (5 pts)
b) What factors would you consider in your experimental design? Please express your answer in terms of controllable variables (e. g., air velocity, pressure, temperature, etc) (10 pts)
c) What is the minimum number of levels that you need to define for each factor? Why? (10 pts)

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, Candi9697

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.

Answers: 2

continue

Engineering, 04.07.2019 18:10, genyjoannerubiera

Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)

Answers: 1

continue

Engineering, 04.07.2019 19:10, jennymares

Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m

Answers: 1

continue

Engineering, 04.07.2019 19:20, Katmcfee7681

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w

Answers: 2

continue

You know the right answer?

You have been tasked to investigate lift and drag forces around airfoils exposed to hypersonic flows...