III B.Tech II Semester Supplimentary Examinations, Apr/May 2009 AERODYNAMICS-II (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
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1. Explain the formation of horseshoe vortex system over a finite span wing. State all the 4 theorems of vortex flows and describe their applications with this vortex system. Make use of sketches / plots to elaborate your answer. [16] 2. State and elaborate the theorems of vortex flows. Give an example each from flow over a finite span wing in incompressible, inviscid flow. [16]
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3. A planar wing has the data as below; Trapezoidal Wing, Wing Span, 2b = 10 m, Wing chord cs =1.5 m in the plane of the symmetry and ct = 1.0 m Taking just two panels on one half of the wing, work out the problem up to the application of boundary conditions. [16]
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4. The equation of a slender axially symmetric body is defined through the following equation; R(x) = (2 t / L2 )×( L-x) Obtain the distribution of velocity u(x) over the entire length of the body for t = 2.5, and L =1m. [16] 5. Consider a flat plate in a supersonic air stream of M∞ = 2.5, p∞ =100 kPa , over a flat plate of chord C = 2m ,and at an angle of attack α = 80 . Analyze the flow field. Elaborate with detailed sketches. [16]
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6. Consider a flat plate in a supersonic air stream of M∞ = 2.0, p∞ =100 kPa , over a flat plate of chord C = 2m ,and at an angle of attack α = 50 . Analyze the flow field. Obtain lift, drag and pitching moments from Ackerets theory. Elaborate with detailed sketches. [16] 7. Describe the whole range of contact type instruments in the measurements of total and static pressure, flow angularity, turbulence and temperature measurements in wind tunnel testing. Hence describe a 3-hole probe and its utility. [16]
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8. What are the distinctive features of a high-speed wind tunnel? How do we get supersonic flow in a wind tunnel? Explain the aerodynamics of flow in such a case. Make use of sketches and plots to elaborate your answer. [16] ?????
NR322101 III B.Tech II Semester Supplimentary Examinations, Apr ...
a flat plate of chord C = 2m ,and at an angle of attack α = 50 . Analyze the flow · field. Obtain lift, drag and pitching moments from Ackerets theory. Elaborate with.
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of 1 msec synchronizing pulses are applied to the device such that breakdown · voltage is lowered by 50 V at each pulse. The synchronizing pulse frequency.
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250 kN and a minimum value of 100 kN. The properties of the plate material are as follows: · Endurance limit stress = 225 MPa, and yield point stress = 300 MPa.
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(b) A hydraulic press has diameter of ram 200 mm and of plunger 40 mm. It is provided with a lever for applying force to the plunger. If the ratio of leverage.
(b) In what way C++ throw specification differs from throw clause in java. [8] · 8. Explain in detail the sequence control in ML. [16] · *****. 1 of 1. AjntuWorld.in.