JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

AE605PC: AEROSPACE PROPULSION LAB

B.Tech III Year II Semester (R18)

Pre-Requisites:

  • Thermodynamics
  • Aircraft propulsion

Course Objectives:

  • 1. Understand the basics of propulsion, working principles of reciprocating engines, performance estimation based on rotation angles, and components of engine and their functions
  • 2. Knowledge about the operation of valves, ports and their functioning in four stroke and two stroke engines.
  • 3. Calculation of percentage of carbon residue and flash and fire point temperatures of a Lubricating Oil.
  • 4. Understand the basic characteristics and range of performance of axial flow gas turbine. Perform parametric jet engine performance analysis and turbo machinery and basic combustion calculations.

Course Outcomes:

  • Working principle of IC engine, compressor
  • Turbine efficiency

Week-1 ENGINE DISASSEMBLY AND ASSEMBLY

  • 1. To understand the working mechanism and identifying various components to build an IC engine.
  • 2. Brief description about Components of engine and their functions.

Week-2 FLASH POINT AND FIRE POINT TEST

  • 1. Determination of flash point and fire point for a sample using pen sky martin‘s test.

Week-3 DETERMINATION OF DYNAMIC VISCOSITY OF A GIVEN SAMPLE USING REDWOOD

VISCOMETER

  • 1. Determine kinematic viscosity and dynamic viscosity of given sample using a viscometer.
  • 2. Order fluctuating temperature is measured in terms of viscosity

Week-4 MECHANICAL EFFICIENCY OF AXIAL COMPRESSOR

  • 1. Calculation of the Mechanical efficiency of axial compressor- power required, power Available, Compression Ratio.

Week-5 GAS TURBINE PARAMETERS CALCULATION

  • 1. Calculation of work, power and Thrust requirement in gas turbine- combustion power input, work heat relationship.

Week-6 GAS TURBINE EFFICIENCY AND PERFORMANCE DIAGRAMS

  • 1. Elucidate T-S, H-S diagrams for the gas turbine and compare efficiencies of non-ideal engine components.

Week-7 GAS TURBINE EFFICIENCY CALCULATIONS

  • 1. Calculation of thermal, propulsive and overall efficiency of turbo jet cycle. R18 B.TECH AERONAUTICAL ENGG. III YEAR

Week-8 WORK OUTPUT OF AXIAL TURBINE

  • 1. Calculation of total work output of axial turbine- out put work necessary, Available output.

Week-9 NOZZLE PERFORMANCE

  • 1. Calculation of various nozzle performance with airflow

Week-10 CALORIFIC VALUE OF DIFFERENT FUELS

  • 1. Calculation of calorific value of different fuels and materials using digital bomb calorimeter and optimizing astute fuels

Week-11 FREE AND FORCED CONVECTION

  • 1. Estimation of convection coefficient of air using forced jet or free convection apparatus

Week-12 PROPELLER TEST RIG

  • 1. Calculation of propeller efficiency and thrust availability using propeller test rig at various blade pitch angles.

REFERENCE BOOKS:

  • 1. https://www.cast-safety.org/pdf/3_engine_fundamentals.pdf
  • 2. https://en.wikipedia.org/wiki/Reciprocating_engine R18 B.TECH AERONAUTICAL ENGG. III YEAR

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