the savant club...!!!

Chemical Bonding - 1

2015-09-15T21:42:00.005+05:30

Chemical Bonding - 1 1. An ionic bond can be formed between two atoms when one of them has a low ionization energy and the other a high electron affinity both the atoms have high values of ionization energy both the atoms have low values of electron affinity both the atoms have low values of ionization

Aircraft nomenclature

2015-08-05T18:05:00.000+05:30

Roll over the hotspots for details

NACA Series

2015-07-24T12:09:00.001+05:30

NACA Series 1. In a NACA 4 digit series, what does the first number represent? Maximum thickness as percentage of chord Minimum camber as percentage of chord Maximum camber as percentage of chord Minimum thickness as percentage of chord var reltext = []; function

What are LEAF SPRINGS...???

2014-10-16T23:31:00.001+05:30

INTRODUCTION TYPES ADVANTAGES DISADVANTAGES INTRODUCTION Leaf springs also referred to as semi-elliptical springs or cart springs are one of the oldest form of suspension used in vehicles, especially heavy vehicles. A leaf spring looks similar to a bow minus the string. It consists of a stack of curved narrow plates of equal width and varied length clamped together with shorter

What is Thermogravimetric Analysis...???

2013-02-01T15:42:00.000+05:30

Thermogravimetric Analysis is a material characterization technique in which the mass of a substance is monitored as a function of temperature or time under controlled temperature and atmosphere. This analysis is carried out primarily to determine 1) the composition of materials such as organic and inorganic content in the sample, 2) to predict their thermal

What is the effect of Catalysts on Ignition of Ammonium Perchlorate based propellants...???

2013-01-27T15:35:00.000+05:30

A Catalyst is a substance that is used in small amounts relative to the reactants that modifies the rate of reaction without it being consumed in the reaction and this process is called Catalysis. Catalysts that accelerate the reaction are called positive catalysts while the ones that slow down are called inhibitors. Catalysts react with one or more reactants to form

What is a Shear Co-axial Jet Injector...???

2012-09-19T13:01:00.001+05:30

INTRODUCTION PROCESS OF DISINTEGRATION CLASSIFICATION OF BREAKUP REGIMES INTRODUCTION The aim of atomization is to substantially increase the surface area of the liquid to enhance vaporization, mixing and combustion. The end result is that the liquid jet becomes unstable which leads to the disintegration

What are the different types of flow boundary conditions used in FLUENT...???

2012-08-19T17:06:00.000+05:30

FLUENT is a computational fluid dynamics (CFD) software which consists of modeling capabilities needed to simulate flow, turbulence, heat transfer and chemical reactions for a wide range of applications. It is an integral part in the design and optimization process of any product development. FLUENT has a wide range of

What is STEALTH TECHNOLOGY...???

2012-06-20T17:03:00.001+05:30

Stealth or Low Observability is one of the most misunderstood concepts by the common man. Stealth aircraft are considered to be the invisible aircrafts that dominate the skies. But, in simple terms, stealth technology allows an aircraft to be partially invisible to Radar or any other means of detection. This is similar to the camouflage used by soldiers in jungle

What is an EZ-ROCKET...???

2012-06-19T12:10:00.001+05:30

OVERVIEW Everyone gets fascinated when it comes to Space, many of us couldn't afford to go to into space because it is just that expensive. But what if a commercial, cost effective spacecraft can take off from the ground on its own, travel into space and return? Well, this is exactly what XCOR Aerospace has managed to do with its EZ-Rocket. It is the first rocket plane to be built and

What is a Cycloidal Rotor...???

2012-06-10T12:11:00.003+05:30

ADVANTAGES DISADVANTAGES A Cycloidal Rotor consists of several blades that rotate about a horizontal axis that is perpendicular to the direction of flight. Blade span is parallel to the axis of rotation and the pitch angle of each of the blades is changed periodically as the blade moves around the azimuth of the rotor. Blades at the top and bottom produce a vertical lifting

What is a RESISTO-JET...???

2012-05-22T20:19:00.000+05:30

Resisto-jet is a type of spacecraft propulsion that works by heating the propellant through an external power source to high speed. Heating is usually achieved by passing electricity through a resistor consisting of a hot incandescent filament and thus the name resisto-jet. The thermal energy released is converted into kinetic energy by a nozzle with high

what is a pintle injector...???

2012-03-30T12:49:00.001+05:30

The pintle injector is one of the most unique injectors that have been used in liquid rocket engines. Originally developed as a laboratory experimental apparatus to study propellant mixing and combustion reaction times of hypergolic liquid propellants. In a bipropellant engine, one of the propellants flows down the inside of the pintle and is ejected

materials used for reusable aerospace vehicles

2012-01-03T20:09:00.000+05:30

INTRODUCTION MATERIALS FOR REUSABLE AEROSPACE VEHICLES AIR FRAME MATERIALS THERMAL PROTECTION SYSTEMS INTRODUCTION The cost of launching spacecrafts using expendable vehicles is very high and efforts are being made to reduce these costs significantly. This reduction in costs can be achieved either by cutting down the overall weight and cost of the

whats a bootstrap air conditioning system?

2011-03-19T11:29:00.003+05:30

Once a system has been started by some external power source, the working fluids sustain the process on a self sustaining basis, such a system is known as a bootstrap system. A gas turbine engine once started, sustains a bootstrap operation, because the turbine continues to drive the compressor that feeds air to the engine. Another bootstrap system used by aircrafts is the bootstrap air

how to select appropriate fins for ur rocket...!!!

2011-03-15T21:29:00.011+05:30

A fin is a surface used to give directional stability to any object moving through a fluid such as water or air. The size of the fins, their shape, the number to use and their placement on rocket are all questions that can be answered only by experimentation. Even in the professional field, the character of the aerodynamic surfaces is determined only by extensive tests in wind tunnels

hubless wheels...!!!

2010-12-04T07:53:00.008+05:30

A hubless wheel is a wheel lacking a central hub, first designed by an Italian mechanical engineer, Franco Sbarra especially for motor vehicles. but it is also been seen in the application of many bicycle prototypes over the years. The Orbital wheel, a type of hubless wheel was designed in 1990 by Dominique Mottas. Hubless wheels lack a central hub and an axle which form the

What is Inertial Navigation System?

2010-10-16T17:58:00.008+05:30

An Inertial Navigation System (INS) is a navigational aid that makes use of a clock, accelerometers (sensors for measuring acceleration), gyroscopes (sensors for measuring rotation) and a computer to continuously calculate the position, orientation and velocity of an object on the move without any external references. Inertial navigation is a self-contained navigation technique in which

How GPS works?

2010-10-07T22:08:00.029+05:30

The NAVSTAR-GPS (NAVigation System with Timing And Ranging Global Positioning System) commonly known as GPS, is a U.S. space based radio navigation system that provides reliable positioning, navigation and timing services to users on a continuous worldwide basis, freely available to all. GPS was originally intended for military applications, but in the 1980’s the government made the

What is an EKRANOPLAN...?

2010-10-02T13:39:00.013+05:30

Ekranoplan is a Russian word which means 'screen craft' or 'skimmer'. It is not a plane nor is it a ship, moreover its a mixture of both. It is a transition between a hovercraft and an aircraft. It is a vehicle that attains level flight close to the surface of the earth which is possible by the cushion of high pressure air created by the aerodynamic interaction between the

How does a SEGWAY work?

2010-01-19T20:29:00.005+05:30

The Segway PT also known as Segway Personal Transporter is the world's first self-balancing human transporter. The Segway PT only has two wheels, yet it manages to stay upright by itself. To move forward or backward on the Segway PT, the rider just leans slightly forward or backward. To turn left or right, the rider simply moves the LeanSteer frame left or right. You get the sense of

How does a VARIABLE SWEEP WING AIRCRAFT work?

2010-01-18T19:44:00.006+05:30

NORTHROP SWITCHBLADE BELL X-5 A variable-sweep wing is an aircraft wing that can be swept back or front and then returned to its original position during flight. It allows the aircraft's geometry to be modified in flight, and is an example of variable geometry. With different wing positions allowing for greater efficiency and performance in various flight modes, these aircraft are

How does a TRAVOLUTION device work?

2009-08-05T20:09:00.002+05:30

A wave of “green” is washing over Ingolstadt: after two years of research, the “Travolution” team has developed a trend-setting concept to improve traffic infrastructure. Investment amounts to a total of about €1.2 million. AUDI AG and its venture partners presented the results recently, with further joint pilot projects to follow. “Travolution paved the way for innovative traffic

How does an AIRSPEED indicator work?

2009-08-02T09:01:00.004+05:30