Combustion, or burning,[1] is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Combustion does not always result in fire, because a flame is only visible when substances undergoing combustion vapourise, but when it does, a flame is a characteristic indicator of the reaction. While the activation energy must be overcome to initiate combustion (e.g., using a lit match to light a fire), the heat from a flame may provide enough energy to make the reaction self-sustaining. Combustion is often a complicated sequence of elementary radical reactions. Solid fuels, such as wood and coal, first undergo endothermic pyrolysis to produce gaseous fuels whose combustion then supplies the heat required to produce more of them. Combustion is often hot enough that incandescent light in the form of either glowing or a flame is produced. A simple example can be seen in the combustion of hydrogen and oxygen into water vapor, a reaction commonly used to fuel rocket engines. This reaction releases 242 kJ/mol of heat and reduces the enthalpy accordingly (at constant temperature and pressure):
2H
2(g) + O
2(g) → 2H
2O(g)
Combustion of an organic fuel in air is always exothermic because the double bond in O2 is much weaker than other double bonds or pairs of single bonds, and therefore the formation of the stronger bonds in the combustion products CO
2 and H
2O results in the release of energy.[2] The bond energies in the fuel play only a minor role, since they are similar to those in the combustion products; e.g., the sum of the bond energies of CH4 is nearly the same as that of CO
2. The heat of combustion is approximately −418 kJ per mole of O2 used up in the combustion reaction, and can be estimated from the elemental composition of the fuel.[2]
Uncatalyzed combustion in air requires relatively high temperatures. Complete combustion is stoichiometric concerning the fuel, where there is no remaining fuel, and ideally, no residual oxidant. Thermodynamically, the chemical equilibrium of combustion in air is overwhelmingly on the side of the products. However, complete combustion is almost impossible to achieve, since the chemical equilibrium is not necessarily reached, or may contain unburnt products such as carbon monoxide, hydrogen and even carbon (soot or ash). Thus, the produced smoke is usually toxic and contains unburn
Oh I just watched the vid lol @winterro
That train is blursed
No
+7
Oh you got rid of them smhmh @OtakuNekoToT
I don’t know what happened but nice tags on the video lmao
Oh yeah, im just blind lol @jamesPLANESii
Dude charge your phone
+1
+2I have no clue what has happened or how that was possible lol, but I do know that that’s a cool heli
Very
:O shaped
Cool
+2Pi @SnoWFLakE0s
+1Mac
+2Oh ok you do you dude @ReturnOfJeffChandler
What do you mean by: “pull a mostly” @ReturnOfJeffChandler
Lmao tru @IceCraftGaming
+1Ok you’ll do what? @ReturnOfJeffChandler
You’ve never seen holographic mountains before? Smhmh
+5Good question @rexzion
Ye @ReinMcDeer
+1E @edensk
No me @F104Deathtrap
Dude not cool @LieutenantSOT
It’s never gunna give you up and never gunna let you down
+13Bruh what kinda squid is that
This is amazing
+11It restocks the original crafts
+1Very cool
I’m more confused you didn’t know this lol @Aviationcheesesticks
+1Midday is 12pm midnight is 12am @Aviationcheesesticks
+1So it’s midday
+1Oh cool you’re back
It’s custom
Then decrease/increase the braking force @SkylineAero
Increase the mass of the wheels or set the thing it’s connected to have a higher mass than current
Hi @NonameMini
Yooo it’s my way into SPMC @Kennneth
Ikr best build ever@Kennneth
Bruh lame part count @Kennneth
+1I am everywhere
Never @MRFOXY09
Combustion, or burning,[1] is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Combustion does not always result in fire, because a flame is only visible when substances undergoing combustion vapourise, but when it does, a flame is a characteristic indicator of the reaction. While the activation energy must be overcome to initiate combustion (e.g., using a lit match to light a fire), the heat from a flame may provide enough energy to make the reaction self-sustaining. Combustion is often a complicated sequence of elementary radical reactions. Solid fuels, such as wood and coal, first undergo endothermic pyrolysis to produce gaseous fuels whose combustion then supplies the heat required to produce more of them. Combustion is often hot enough that incandescent light in the form of either glowing or a flame is produced. A simple example can be seen in the combustion of hydrogen and oxygen into water vapor, a reaction commonly used to fuel rocket engines. This reaction releases 242 kJ/mol of heat and reduces the enthalpy accordingly (at constant temperature and pressure):
2H
2(g) + O
2(g) → 2H
2O(g)
Combustion of an organic fuel in air is always exothermic because the double bond in O2 is much weaker than other double bonds or pairs of single bonds, and therefore the formation of the stronger bonds in the combustion products CO
2 and H
2O results in the release of energy.[2] The bond energies in the fuel play only a minor role, since they are similar to those in the combustion products; e.g., the sum of the bond energies of CH4 is nearly the same as that of CO
2. The heat of combustion is approximately −418 kJ per mole of O2 used up in the combustion reaction, and can be estimated from the elemental composition of the fuel.[2]
Uncatalyzed combustion in air requires relatively high temperatures. Complete combustion is stoichiometric concerning the fuel, where there is no remaining fuel, and ideally, no residual oxidant. Thermodynamically, the chemical equilibrium of combustion in air is overwhelmingly on the side of the products. However, complete combustion is almost impossible to achieve, since the chemical equilibrium is not necessarily reached, or may contain unburnt products such as carbon monoxide, hydrogen and even carbon (soot or ash). Thus, the produced smoke is usually toxic and contains unburn
+13That’s definitely a tube
+4The text may be different as they are 2 very different planes although they share the same background @AeroAeroTheMen
Just type F-4E walkaround @AeroAeroTheMen
Ah I’m doing the G @AeroAeroTheMen
Oh cool which variant? @AeroAeroTheMen
I don’t tag people @BeastHunter
It was a joke lol @F1849