Engineering, 17.12.2019 23:31 alissalhenry

Consider a flat plate at an angle of attack of 2° in a mach 2.2 airflow. (mach 2.2 is the cruising mach number of the concorde supersonic transport.) the length of the plate in the flow direction is 202 ft, which is the length of the concorde. assume that the free-stream conditions correspond to a standard altitude of 50,000 ft. the total drag on this plate is the sum of wave drag and skin friction drag. assume that a turbulent boundary layer exists over the entire plate. the results given in ch. 4 for skin friction coefficients hold for incompressible flow only; there is a compressibility effect on cf such that its value decreases with increasing mach number. specifically, at mach 2.2 assume that the cf given in ch. 4 is reduced by 20 percent. a) given all the preceding information, calculate the total drag coefficient for the plate. b) if the angle of attack is increased to 5°, assuming that cf stays the same, calculate the total drag coefficient. c) for these cases, what can you conclude about the relative influence of wave drag and skin friction drag?

Answers: 3

Show answers

Another question on Engineering

Engineering, 03.07.2019 14:10

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Answers: 3

Answer

Engineering, 04.07.2019 03:10

What precautions should you take to prevent injuries when dealing with heavy loads?

Answers: 1

Answer

Engineering, 04.07.2019 18:10

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Answers: 2

Answer

You know the right answer?

Consider a flat plate at an angle of attack of 2° in a mach 2.2 airflow. (mach 2.2 is the cruising m...

Questions