1. Consider a Boeing 747 airliner cruising at a velocity of 550 mile/hr at a standard...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. Consider a Boeing 747 airliner cruising at a velocity of 550 mile/hr at a standard altitude of 38,000 ft, where the freestream pressure and temperature are 432.6 lb/ft² and 390 °R, respectively. A one-fiftieth scale model of the 747 is tested in a wind tunnel where the temperature is 430 °R. a) Calculate the required velocity and pressure of the test airstream in the wind tunnel such that the lift and drag coefficients measured for the wind-tunnel model are the same as for free flight. Assume that both viscosity and speed of sound are proportional to √T, where T is the temperature. (13 points) b) Compare the pressure obtained from part (a) with the standard atmospheric pressure, and comment on how difficult or easy it is in ground-based facility to replicate this condition. (2 points) 1. Consider a Boeing 747 airliner cruising at a velocity of 550 mile/hr at a standard altitude of 38,000 ft, where the freestream pressure and temperature are 432.6 lb/ft² and 390 °R, respectively. A one-fiftieth scale model of the 747 is tested in a wind tunnel where the temperature is 430 °R. a) Calculate the required velocity and pressure of the test airstream in the wind tunnel such that the lift and drag coefficients measured for the wind-tunnel model are the same as for free flight. Assume that both viscosity and speed of sound are proportional to √T, where T is the temperature. (13 points) b) Compare the pressure obtained from part (a) with the standard atmospheric pressure, and comment on how difficult or easy it is in ground-based facility to replicate this condition. (2 points)
Expert Answer:
Answer rating: 100% (QA)
a To calculate the required velocity and pressure of the test airstream in the wind tunnel we need to ensure that the lift and drag coefficients measured for the windtunnel model are the same as for f... View the full answer
Related Book For
Thermodynamics An Interactive Approach
ISBN: 978-0130351173
1st edition
Authors: Subrata Bhattacharjee
Posted Date:
Students also viewed these accounting questions
-
In what manner do the ethical principles inherent in social work intersect with and inform the practice of advocacy within the field?
-
Marist Library plans to develop a ?Collaboration room reservation system?. Based on the following requirements, design ER diagram. Marist Library currently has 7 group collaboration rooms available...
-
Is the answer correct? The graph of a y = f(x) is shown. 6 + 5 14 m ~ 1 -6 -5 -4 -3 2 -1 -1 -2 -3 A w -4 -5- -6+ 1 2 3 4 The domain of f(x) is x = [-3,3] The domain of g(x) = notation) S 6 f(x) is a ...
-
What are the times interest earned ratio?
-
You are an analyst working for Goldman Sachs, and you are trying to value the growth potential of a large, established company, Big Industries. Big Industries has a thriving R&D division that has...
-
The University of Wisconsin at Madison completed a study titled GenderEquity Study of Faculty Pay,dated June 5, 1992. The main purpose of the study was to determine whether women are treated unfairly...
-
The following transactions occurred during March 2011 for the Wainwright Corporation. The company owns and operates a wholesale warehouse. [These are the same transactions analyzed in Exercise 2-1,...
-
What strategies can leaders employ to cultivate a culture of collaboration that transcends geographical boundaries and time zones, especially within multinational corporations operating in diverse...
-
The Dover Direct Insurance Agency began operations on June 1, 2018. In the month of June, the following transactions occurred: June 2: Dover Direct's owner invested $80,000 (the par value of the...
-
3 Find the sum of the first 4 terms of a geometric sequence with a = 200 and r= 2 The sum is
-
Keeping in mind the Todd P. case, as a practical matter, how will schools be aware of a delinquency proceeding and know when to participate? How can juvenile court judges be apprised of the IDEA and...
-
Could the Roncker argument, that spending benefiting only one student is a factor in using cost as a defense, be used by a school district to deny residential placement to a student because it will...
-
In the Cerra v. Pawling School District case, the court noted that when a learningdisabled child is in a mainstream class, the attainment of passing grades and regular advancement from grade to grade...
-
What happens if a student needs a particular service for which funds are not available?
-
In the Cerra v. Pawling School District case, the Fifth Circuit Court of Appeals found that the school districts IEP was reasonably calculated to provide the student with FAPE. Based on the...
-
Assume that the heights of American men are normally distributed with a mean of 69.7 inches and a standard deviation of 3.4 inches. What proportion of all men will be taller than 6'07 (HINT: Convert...
-
Splitting hairs, if you shine a beam of colored light to a friend above in a high tower, will the color of light your friend receives be the same color you send? Explain.
-
A convergent nozzle has an exit area of 4 cm2. Air enters the nozzle with a total pressure of 1200 kPa, and a total temperature of 400 K. Assuming isentropic flow, determine the mass flow rate (m)...
-
A mixture of 1 kmol of CO and 2 kmol of O2 is heated to 2000 K at a pressure of 2 atm. Determine the equilibrium composition of (a) O2, (b) CO2 (in kmols) assuming the mixture consists of CO2, CO and...
-
A heat engine produces 40 kW of power while consuming 40 kW of heat from a source at 1200 K, 50 kW of heat from a source at 1500 K, and rejecting the waste heat to the atmosphere at 300 K. Determine...
-
Equation 3.3 gives the relation between the downwash and the vortex sheet strength in \(\mathrm{x}-\mathrm{Z}\) coordinates for a positive free stream running from left to write. Obtain a similar...
-
Comment on the physical meaning of the Theodorsen function.
-
Find the phase difference between the displacement and the downwash for a flat plate oscillating simple harmonically in a free stream at a zero angle of attack.
Study smarter with the SolutionInn App