why is it that variable wing geometry aircraft do not exist anymore ....etc

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TURBO CHARGING BY VARIABLE VANE GEOMETRY



INTRODUCTION TO TURBOCHARGING

A turbocharger, or turbo, is a centrifugal compressor powered by a turbine which is driven by an engine's exhaust gases. Its benefit lies with the compressor increasing the pressure of air entering the engine thus resulting in greater performance (for either, or both, power & efficiency). They are popularly used with internal combustion engines (e.g. four-stroke engines like Otto cycles and Diesel cycles). ....etc

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Presented By:
R.J. Stafford, J.M. Mulloy, T.M. Yonushonis, H.G. Weber, and M.J. Patel
Cummins Engine Company

INTRODUCTION

Turbocharging of diesel engines has enhanced fuel economy and reduced diesel engine emissions. The initial applications of turbochargers to heavy duty diesel engines during the early 1970's reduced Bosch smoke (a measure of particulate matter used at the time) from 2.4 to 0.6 units. At the same time, engine specific fuel consumption was reduced from 0.36 Ib./bhp-hr to 0.35 ib./bhp-hr. Since that time, a varie ....etc

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i need this pdf file can you please make it available for me. thanx ....etc

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INTRODUCTION
CAUSE OF CORROSION MOISTURE, WATER, CRACKS
AREAS AFFECTED SURFACE, LAP JOINTS, FASTENERS
3. NEED OF NDT
NON DESTRUCTIVE TESTS (NDT)
VISUAL INSPECTION
MAGNETIC PARTICLE TEST
LIQUID (DYE) PENITRATION TEST
X RAY PENETRATION INSPECTION
EDDY CURRENT INSPECTION
ULTRASONIC INSPECTION
DEFECTS OF CONVENTIONAL SYSTEMS
INSPECTION FROM TOP NORMAL TO SURFACE
2. TIME CONSUMING FOR POINT TO POINT INSPECTION
3. INABILITY TO DETECT (a) DISBONDS IN MULTILAYER
(b) FATIGUE CRACKS AT ....etc

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Detection of corrosion damage in aircraft wing skin structures is an ongoing NDT challenge. Ultrasonic methods are known and well-accepted techniques, which are relatively simple to carry out in terms of setup, probes and instrumentation and operator training. However, with conventional inspection from the top surface using a transducer at normal incidence (0o to the normal to the surface) producing a visual picture in the form of a C-scan, it is very tie consuming to point-by-p ....etc

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Advantages of inflatable wings

High aspect ratio
High durability
We can change the value of CL
Can be packed and deployed numerous times
Wing can recover shape in flight even if the load limit is exceeded
Impact absorption and impact resiliency


Applications
Military applications
1.border patrol
2. surveillance and inspection.
Commercial applications
1. airborne observation of crops
2. inspection of pipelines and power lines.
3.mapping of particular area
Space research


....etc

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To get full information or details of wing fabrication of aircraft please have a look on the pages

http://seminarsprojects.net/Thread-aircraft-auto-pilot-roll-controll-system?pid=26674&mode=threaded

if you again feel trouble on wing fabrication of aircraft please reply in that page and ask specific fields in wing fabrication of aircraft ....etc

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A variable-speed controller, for an existing 225 kW fixed-speed wind power generator, is presented in this paper. A sensorless direct torque control algorithm-based controller is proposed for the squirrel-cage induction generator. Generator torque reference is derived based on sensorless maximum power tracking mode algorithm, up to the base speed of the generator. A three-phase front-end converter is used here to deliver the generated power to the grid with unity-power-factor operation at all wind speeds. This algorithm is based on direct activ ....etc

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Variable Voltage And Variable Frequency drives

Presented By:
P.NATARAJU S.E.V.S.RAGHU VARMA
3rd year E.E.E. 3rd year E.E.E.

Abstract:-
Our varying industrial needs demand more precise control of the outputs of our basic electrical prime movers i.e, THE MOTORS. Basically dc motors are easy to control compared to their ac counter parts, but they have their own limitations with increase in capacity. Conversely ac motors in particular squirrel cage induction motors are very economical but their spee ....etc

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