Exam Details
| Subject | Aerodynamics- II | |
| Paper | ||
| Exam / Course | B.Tech in Aerospace Engineering (BTAE) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
Derive a relation connecting flow turning angle, shock angle and free stream Mach number for oblique shock waves.
An incident shock wave with wave angle 35° impinges on a straight wall. If the upstream flow properties are M1 P1 1 atm, T1 300 calculate the reflected shock wave angle with respect to the wall.
2. Explain the procedure to be followed for the design of a supersonic nozzle using method of characteristics.
3. State Biot-Savart law. Determine the expression for the vortex drag for elliptical loading and find the condition for the maximum vortex drag.
Write a short note on laminar flow airfoils.
Explain the swinging of a cricket ball with the help of a neat sketch.
With a neat sketch, explain the concept of Prandtl-Meyer expansion waves. How do flow properties like total pressure and Mach number change across the expansion waves?
Sketch the Shock polar for M 2·0 and explain the method of finding the Mach numbers and Shock angles for a turning angle of 5°.
Explain the terms Bound vortex, Starting vortex and Horse shoe vortex.
Show that for an elliptical wing loading, the induced drag is minimum.
A thin plate of length 2 m and width 1 m is moving in air along its length at a speed of 10 m/s. Calculate the total skin friction drag on the plate assuming sea-level conditions.
Write a short note on Boundary layer separation.
8. Consider a double wedge airfoil having chord C m and half angle 10° kept at an angle of attack of 5° in supersonic stream of Mach number 2.5 as shown in Figure 1. Evaluate lift and drag of this airfoil considering sea-level conditions.
<img src='./qimages/15058-8.jpg'>
9. Explain the phenomenon of flow separation over the flat surface and also justify why golf balls are manufactured with dimpled surface.
An incident shock wave with wave angle 35° impinges on a straight wall. If the upstream flow properties are M1 P1 1 atm, T1 300 calculate the reflected shock wave angle with respect to the wall.
2. Explain the procedure to be followed for the design of a supersonic nozzle using method of characteristics.
3. State Biot-Savart law. Determine the expression for the vortex drag for elliptical loading and find the condition for the maximum vortex drag.
Write a short note on laminar flow airfoils.
Explain the swinging of a cricket ball with the help of a neat sketch.
With a neat sketch, explain the concept of Prandtl-Meyer expansion waves. How do flow properties like total pressure and Mach number change across the expansion waves?
Sketch the Shock polar for M 2·0 and explain the method of finding the Mach numbers and Shock angles for a turning angle of 5°.
Explain the terms Bound vortex, Starting vortex and Horse shoe vortex.
Show that for an elliptical wing loading, the induced drag is minimum.
A thin plate of length 2 m and width 1 m is moving in air along its length at a speed of 10 m/s. Calculate the total skin friction drag on the plate assuming sea-level conditions.
Write a short note on Boundary layer separation.
8. Consider a double wedge airfoil having chord C m and half angle 10° kept at an angle of attack of 5° in supersonic stream of Mach number 2.5 as shown in Figure 1. Evaluate lift and drag of this airfoil considering sea-level conditions.
<img src='./qimages/15058-8.jpg'>
9. Explain the phenomenon of flow separation over the flat surface and also justify why golf balls are manufactured with dimpled surface.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
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- School of Continuing Education (SOCE)
- School of Education (SOE)
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Subjects
- Aerodynamics- I
- Aerodynamics- II
- Aircraft Design/Launch Vehicle/ Rocket Design
- Aircraft Instruments
- Aircraft Safety and Maintenance Engineering
- Aircraft Structures
- Aircraft Systems And Airworthiness Requirements
- Applied Chemistry
- Applied Physics
- Basic Control Theory
- CNS-ATM system
- Composite Materials
- Computer Fundamentals
- Engineering Drawing
- Environmental Science
- Flight Mechanics
- High Speed Aerodynamics
- Instruction To Computer Play Device
- Introduction to Aeronautics
- Introduction To Rocket And Missiles
- Mechanics Design
- Propulsion- I
- Propulsion- II
- Rocket Propulsion
- Space Dynamics
- Strength of Materials
- Technical Writing and Communication Skills
- Workshop Technology