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Transcript of 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