ramana ppt

By:CHENNA VENKATA RAMANA

SUPER SONIC AIR CRAFT

G. PULLAREDDY ENGINEERING COLLEGE , KURNOOL

Introduction History of Aviation Industry Principle of working Concepts Advantages Disadvantages conclusion

CONTENTS

The first aircraft to fly supersonically in level flight was the American Bell X-1 experimental plane which was powered by a 6000-lb thrust rocket powered by liquid oxygen and ethyl alcohol.

Introduction

History of aviation started with Kites Super sonic and Hyper sonic flights were

Introduced (which is too heavier than airjets- unscientific design)

History of Aviation Industry

17th 18th 19th century Hydrogen Gas is discovered which leads to the invention of Hydrogen balloons.

Physicist- leads to the H-balloons with hot air

20th century- Aerodynamics made by physicist.

Innovations…

SUPER SONIC AIR CRAFT PRINCIPLE: Flight at speeds greater than that of sound

are supersonic. The range of speeds from Mach number 0.8

to 1.2 is known as transonic

Supersonic Configuration Concepts

Supersonic laminar flow

Tsagi SSBJ

Lockheed All-Wing

Lockheed low-boom

Oblique wing

Evolution of Geometry ModelingCircular cross-sectionStraight tapered wing

Elliptic cross-sectionStrake modeled

Axisymmetric nacelles and spikes

Nacelles with 2D inlets

Curved leading edges2D circular nacellesSplit cross-section(different widths above and below wing)

Large range of concepts requiring flexible, high-fidelity geometry representation

High sensitivity to geometric changes Many sources of non-smooth behavior High dimensionality search space

Supersonic Optimization Challenges

Multidisciplinary Analysis and Design Methods

Parametric Geometry Viscous and Inviscid Analysis Tools Suite of Search Methods Multiobjective / Multipoint Optimization Multifidelity Search Experiments

Tools for Meeting The Challenges

11

Applications of optimization

Basic aero/structural trades with aeroelastic constraints

High-speed lines, inlet/nozzle design, integration

Boom tailoring

Wing/body/nacelle design with transition and total drag estimation

Example Optimization Studies

 High Speed Quick Service Easy Access: No Physical Barrier: Natural Route: National Defence: No Infrastructure Investment

Advantages

 Risky: Very Costly: Small Carrying Capacity: Unreliable: Huge Investment

Disadvantages

Thank You