AS4251 Hypersonic Aerodynamics Syllabus:
AS4251 Hypersonic Aerodynamics Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
This course will enables students
1. To realise the importance of studying the peculiar hypersonic speed flow characteristics pertaining to flight vehicles.
2. To provide knowledge on various surface inclination methods for hypersonic inviscid flows.
3. To arrive at the approximate solution methods for hypersonic flows.
4. To impart knowledge on hypersonic viscous interactions.
5. To impart knowledge on the effect on aerodynamic heating on hypersonic vehicles.
UNIT I INTRODUCTION TO HYPERSONIC AERODYNAMICS
Peculiarities of Hypersonic flows – Thin shock layers – entropy layers – low density and high density flows – hypersonic flight similarity parameters – shock wave and expansion wave relations of inviscid hypersonic flows – velocity vs altitude map for hypersonic vehicles.
UNIT II SURFACE INCLINATION METHODS FOR HYPERSONIC INVISCID FLOWS
Local surface inclination methods – modified Newtonian Law – Newtonian theory – tangent wedge tangent cone and shock expansion methods – Calculation of surface flow properties – practical application of surface inclination methods – hypersonic independence principle.
UNIT III APPROXIMATE METHODS FOR INVISCID HYPERSONIC FLOWS
Assumptions in approximate methods hypersonic small disturbance equation and theory – Maslen’’s theory– blast wave theory – hypersonic equivalence principle- entropy effects – rotational method of characteristics – hypersonic shock wave shapes and correlations.
UNIT IV VISCOUS HYPERSONIC FLOW THEORY
Peculiarities of hypersonic boundary layers – boundary layer equations r – hypersonic boundary layer theory and non similar hypersonic boundary layers – hypersonic aerodynamic heating and entropy layers effects on aerodynamic heating – heat flux and skin friction estimation.
UNIT V VISCOUS INTERACTIONS AND TRANSITION
Strong and weak viscous interactions – hypersonic shockwaves and boundary layer interactions – Parameters affecting hypersonic boundary layer transition – Estimation of hypersonic boundary layer transition- Role of similarity parameter for laminar viscous interactions in hypersonic viscous flow.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
Upon completion of the course, students will
CO1: Be able to arrive at the solution for problems involving inviscid and viscous hypersonic flows.
CO2: Have thorough knowledge on high temperature effects in hypersonic aerodynamics.
CO3: Be able to arrive at various solution methods to overcome aerodynamic heating problem on hypersonic vehicles.
CO4: To gain ideas on the design issues associated with hypersonic vehicles.
CO5: Able to realize the importance and use of the relevant equations for viscous hypersonic flows.
REFERENCES:
1. Anderson, JD, “Hypersonic and High Temperature Gas Dynamics”, AIAA Education Series, 2nd edition, 2006.
2. Anderson, JD, “Modern compressible flow: with Historical Perspective”, McGraw Hill Education, 3rd edition, 2017.
3. William H. Heiser and David T. Pratt, Hypersonic Air Breathing propulsion, AIAA Education Series, 1994.
4. John T. Bertin, Hypersonic Aerothermodynamics, AIAA Education Series, 1993.