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GATE 2026 Exam Date Announced – Complete Schedule, Syllabus, and Key Details » GATE Study Materials » Mechanical Engineering » Combustion and Thermochemistry
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Combustion and Thermochemistry

Define Combustion? What is Combustion? What is Thermochemistry? Explain Combustion and flame? Learn everything easy and descriptive about Combustion.

Table of Content
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Combustion is a critical process in aerospace engineering. It is used to propel aircraft or rockets. Combustion also produces toxic gases and pollutants that need to be controlled during the process.

Combustion is the process of oxidising a fuel, usually with an oxidizer such as air or another fuel, to produce heat, light, and gases.

What is Combustion:

Combustion is a process by which fuel is burned in a gaseous state. It is the exothermic chemical reaction of oxidising a combustible material in the atmosphere using an oxidant such as oxygen, with the liberation of heat, light, and various reaction products.

Combustion can be used in aerospace engineering to heat air for rocket propulsion.

Combustion is the process of oxidising a fuel, typically an organic fuel such as natural gas or hydrocarbon fuel, at high temperature and pressure with an oxidizer such as air or oxygen in the presence of a catalyst.

Aerospace engineers use Combustion because it can provide more power than other engines. It also can produce large amounts of heat and power.

Combustion is also used in fossil-fueled vehicles. It provides the heat needed for combustion reactions to release energy from the chemical bonds of hydrocarbons.

Combustion in chemical energy is converted into heat and light by the reaction between fuel and oxidizer.

Combustion is a way to produce thermal energy used for heating or propulsion. It is also a rocket engine that uses the exothermic chemical reaction between fuel and oxidizer to create thrust.

Thermochemistry: 

Combustion is when a fuel is burned to release heat and energy. 

Thermochemistry is the study of heat and chemical reactions, and it is used in aerospace engineering to design efficient fuel systems. Combustion is when fuel is burned with an oxidizer, which produces heat and a reaction product.

Combustion has been studied for centuries—the first recorded combustion experiment in India in 995 AD by Muslim scientist Al-Biruni. In 1766, Antoine Lavoisier discovered that Combustion was exothermic and released heat energy into the surrounding environment. He also established that air was an essential ingredient for Combustion.

Combustion is a process that releases energy in the form of heat and light. It is a chemical reaction between fuel and oxidizer. Combustion can be divided into homogeneous, heterogeneous, and controlled.

The Combustion of a hydrocarbon fuel such as methane produces carbon dioxide and 

water vapour as byproducts. Byproducts are known as exothermic reactions.

Combustion is an exothermic reaction that releases heat and light in the form of flame or heat radiation from a source such as an engine, stove or candle.

Combustion is the process of oxidising a fuel, such as natural gas (methane) or gasoline at high temperature and pressure in an exothermic reaction that produces heat, light, and various reaction products.

Combustion is an exothermic chemical process that releases energy. It is a significant source of power generation in heat and light. The Combustion will cause a large amount of heat release, which is harnessed to provide mechanical work if a turbine engine is used.

Combustion can also be used to destroy materials by burning them with oxygen in the presence of fuel. For example, Combustion can be used to eliminate hazardous waste or explosives such as TNT.

Combustion is the chemical reaction between a fuel and an oxidizer that produces heat, light, sound, and various reaction products. Combustion is a process of energy transformation in which fuel reacts with oxygen to produce heat and light energy.

The thermochemistry of Combustion includes the study of chemical reactions between fuels and oxidizers.

Combustion and flame :

Combustion is a process that involves the conversion of a fuel into heat, light, and chemical reaction products. It can be carried out by heating air or other gases. 

Combustion is widely used in aerospace engineering due to its many benefits, such as high power density, low weight and high efficiency.

The combustion process consists of three phases: pre-combustion phase, combustion phase and post-combustion phase. The pre-combustion step includes the preparation of the fuel; the combustion phase involves burning it; while the post-combustion phase includes cooling down or quenching the flame.

Combustion occurs when fuel reacts with oxygen in the presence of heat and pressure, releasing energy in heat, light, sound, and gases.

The flame is the visible manifestation of Combustion. It consists of a heated combustion zone called fuel that reacts with an oxidizer to produce heat and light and products such as water vapour, carbon dioxide, nitrogen oxides, carbon monoxide, hydrogen gas, and others depending on the type of reaction involved.

Conclusion:

Combustion is the process of oxidising a fuel with an oxidizer such as oxygen or nitrous oxide, releasing heat and light energy in the form of either gas or flame. Combustion is an essential process in aerospace engineering. It is a critical factor in designing jet engines and rocket fuel tanks. Combustion occurs when fuel and oxidizer react at high temperatures with the release of heat and light. The combustion process consists of three phases: pre-combustion phase, combustion phase and post-combustion phase. The flame is the visible manifestation of Combustion. Thermochemistry is the study of heat and chemical reactions, and it is used in aerospace engineering to design efficient fuel systems.

faq

Frequently asked questions

Get answers to the most common queries related to the Gate Examination Preparation.

State combustion?

Ans : Combustion is oxidising a fuel, usually with an oxidize...Read full

How is Combustion classified?

Ans : Combustion can be divided into four types: ̵...Read full

Ans : Combustion is oxidising a fuel, usually with an oxidizer such as oxygen, to produce heat, light, and various reaction products. Combustion is widely used in aerospace engineering because it produces thrust. This type of Combustion is known as state combustion. State combustion is combusting fuel with oxygen in the air at atmospheric pressure and temperature.

Ans : Combustion can be divided into four types:

– Ignition

– Burning

– Reaction

– Non-reaction

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