My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
Download Model question papers & previous years question papers
|
Posted By: Sra1 Member Level: Diamond Posted Date: 27 May 2008
|
2007 Jawaharlal Nehru Technological University B.Tech Aeronautical AEROSPACE PROPULSION-II (Supplimentary Examinations, Aug/Sep 2007) Question paper
Set No 2
-----------------
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Write notes on the following with respect to axial turbine stage
(a) Degree of Reaction
(b) Blade losses [8+8]
2. Products of combustion flow through an axial turbine stage with the following properties: Tt1 = 32000R, Pt1 = 200 psia, u3/u3 = 1, M2 = 1.05, U =? rm = 1200 ft/sec, a2= 400 and a3= 250. For the gas, use ?= 1.3 and R = 53.4 ft.lbf/lbm.0R.
Determine the following:
(a) V2, u2 and v2
(b) V3,u3 and v3
(c) Tt and t s for the stage
(d) s and Pt3 for a polytropic efficiency of 0.9 [16]
3. Define and derive the relationship for gross thrust coefficient of a ramjet engine. Explain the behavioural characteristics of gross thrust coefficient with the related parameters with the help of plots for a fixed geometry ramjet engine. [16]
4. What are the various components of a SCRAMJET? Explain their function with the help of suitable diagrams. [16]
5. (a) Explain the following with respect to rocket motor:
i. Impulse weight ratio
ii. Total impulse.
(b) An ideal rocket chamber is to operate at sea level using propellant whose combustion products have a specific heat ratio of 1.30. Determine the required chamber pressure and nozzle area ratio between throat and exit if the nozzle exit Mach number is 2.4. The nozzle inlet Mach number may be considered
to be unity. [5+5+6]
6. Write notes on the following with respect to solid rocket motor:
(a) Rocket motor case
(b) Igniters. [8+8]
7. (a) Explain the following with respect to liquid propellants:
i. Bipropellants
ii. Storable propellants.
(b) Write a note on ‘control of combustion instability’ with respect to liquid rocket motors. [5+5+6]
8. Describe the concept of solid-core reactor rocket with the help of a schematic diagram. [16]
Return to question paper search
|
|
|
Submit Previous Years University Question Papers and make money from adsense revenue sharing program
Are you preparing for a university examination? Download model question papers
and practise before you write the exam.
|
Watch TV Channels
|