Anna University, Chennai

**S****R****I****N****I****VA****S****A****N ENGIEERING COLLEGE DEPARTMENT OF AERONAUTICAL ENGINEERING AE1005 WIIND TUNNEL TECHNIQUES**

__Q____U____E____S____T____I____O____N BANK (PAR T – B)__

*UN**I**T - 1*

1. Explain Buckingham PI theorem with example.

2. Define any five non dimensionless members.

3. An aircraft is to fly at a height –

C for completes dynamic similarity. What would be P & V should be used

WT F μα T (T + 7), E = γ , P = ρRT T v γ

of specific heats.

4. A 7.2m height & 15m long spillway discharges 94m3/s discharge under a head of 2.0m.

If 1:9 scale model of this spillway is to be constructed, determine model dimensions, head o ver spillway model & the model discharge. If model experience a force of 7500N.

Determine force on the prototype.

*UN**I**T - 2*

5. Explain about losses in subsonic wind tunnel.

6. Give the C lassification of wind tunnel & explain about hypersonic wind tunnel.

7. With a neat sketch explain about types of supersonic wind tunnel.

8. Explain about losses in supersonic wind tunnel.

9. Explain about high speed wind tunnel with neat sketch.

*UN**I**T – 3*

10. Derive the expression for test section speed.

11. With a neat sketch explain about calibrations of supersonic wind tunnel.

12. Explain about flow angularity measurements & its types.

13. With a neat sketch explain about turbulence measurements.

*UN**I**T – 4*

14. Explain about any one types of wind tunnel balances with neat example.

15. With a neat sketch explain about velocity measurements using LDA.

16. With a neat sketch brief about pressure measurements by using transducers.

17. With a neat sketch explain about force measurements in wind tunnel.

*UN**I**T – 5*

18. Explain about optical method of flow visualization.

19. Explain flow visualization method by using smoke & tuft grid techniques.

20. With a neat sketch explain about dye injection techniques.