Joule-second - Revision history

en>DVdm: Reverted edits by 115.111.228.54 (talk): unexplained content removal (HG)

2014-08-23T08:38:23Z

Reverted edits by 115.111.228.54 (talk): unexplained content removal (HG)

← Older revision		Revision as of 10:38, 23 August 2014
Line 1:		Line 1:
	~~{{Refimprove\|date=January 2008}}~~		Hi there, I am Alyson Boon although it is not the title on my beginning certificate. I am truly fond of to go to karaoke but I've been taking on new things lately. Office supervising is where her main earnings comes from. Her family members life in Ohio.<br><br>Also visit my site :: live psychic reading ([http://www.octionx.sinfauganda.co.ug/node/22469 click through the following internet site])
	~~{{expert-subject\|Aviation\|ex2=Engineering\|date=February 2009}}~~

	~~In [[fixed-wing aircraft]] driven by one or more jet engines~~, ~~the '''performance''' of the jet engine~~ is ~~important to~~ the ~~operation of the aircraft and includes measurement of [[thrust]], [[fuel consumption]], [[Noise pollution\|noise]] and [[Emission standard\|engine emissions]]~~.

	~~The thrust, noise and emission elements~~ of ~~the performance of a jet engine are of vital importance in the [[takeoff]] phase of operation of the aircraft~~. The thrust and fuel consumption elements, and their variation with [[Altitude#Altitude in aviation\|altitude]] and [[airspeed]], are of vital importance in the [[climb]] and [[Cruise (flight)\|cruise]] phases of operation of the aircraft.

	~~==Thrust==~~
	{{main~~\|Turbojet#Net thrust}}~~
	~~The thrust~~ from ~~a jet engine is determined by the velocity of exhaust gases measured relative to the engine~~.

	~~The velocity of the exhaust gas as it leaves a jet engine is <math>V_j\;</math>:<ref name=FCT918>G. Van Wylen and R. Sonntag, ''Fundamentals of Classical Thermodynamics'', Section 9~~.18<~~/ref>~~
	~~:<math>V_j^2=2(h_4-h_5)</math~~><br />
	~~where~~
	:~~{\| border="0"~~
	\|-
	~~\| <math>h_4\;</math> \|\| is the specific [[enthalpy]] of the gas leaving the turbine and entering the [[propelling nozzle]]~~
	\|-
	~~\| <math>h_5\;</math> \|\| is the specific enthalpy of the gas after it has left the propelling nozzle~~
	\|}


	~~Alternatively, <math>V_j\;</math> is related to the temperatures of the exhaust gas:<ref name=FCT918/>~~
	:~~<math>V_j^2=2 C_{p0}~~ (~~T_4-T_5)</math><br />~~
	~~where~~
	:~~{\| border="0"~~
	\|-
	~~\| <math>C_{p0}\;<~~/~~math> \|\| is the [[specific heat]] of exhaust gas at constant pressure~~
	\|-
	~~\|<math>T_4\;</math> \|\| is the temperature of the gas leaving the turbine and entering the propelling nozzle~~
	\|-
	~~\| <math>T_5\;<~~/~~math> \|\| is the temperature of the gas after it has left the propelling nozzle~~
	\|}

	~~==Notes==~~
	~~{{Reflist}}~~

	~~==References==~~
	* Kerrebrock, Jack L. ~~(1992), ''Aircraft Engines and Gas Turbines'', The MIT Press, Cambridge, Massachusetts USA~~. ~~ISBN 0-262-11162-4~~
	* G. ~~Van Wylen and R~~. ~~Sonntag (1985~~)~~, ''Fundamentals of Classical Thermodynamics'', 3rd edition, John Wiley & Sons, New York NY ISBN 04718293311 {{Please check ISBN\|reason=Invalid length.}}~~
	~~[[Category:Jet engines]]~~

62.199.53.237: Fixed layout error of the equation.

2013-06-02T13:46:48Z

Fixed layout error of the equation.

← Older revision		Revision as of 15:46, 2 June 2013
Line 1:		Line 1:
	~~Hi there~~. ~~My name is Sophia Meagher even though it is not~~ the ~~name on my birth certificate~~. ~~Office supervising is exactly where her~~ main ~~earnings comes~~ from~~. What me and my family members love~~ is to ~~climb but I'm thinking on starting something new. Her family members life in Ohio~~.<br><br>~~my web site~~ ... ~~good psychic~~ - [~~http~~://~~www.khuplaza.com~~/~~dent~~/~~14869889 Highly recommended Webpage~~] -		{{Refimprove\|date=January 2008}}
			{{expert-subject\|Aviation\|ex2=Engineering\|date=February 2009}}

			In [[fixed-wing aircraft]] driven by one or more jet engines, the '''performance''' of the jet engine is important to the operation of the aircraft and includes measurement of [[thrust]], [[fuel consumption]], [[Noise pollution\|noise]] and [[Emission standard\|engine emissions]].

			The thrust, noise and emission elements of the performance of a jet engine are of vital importance in the [[takeoff]] phase of operation of the aircraft. The thrust and fuel consumption elements, and their variation with [[Altitude#Altitude in aviation\|altitude]] and [[airspeed]], are of vital importance in the [[climb]] and [[Cruise (flight)\|cruise]] phases of operation of the aircraft.

			==Thrust==
			{{main\|Turbojet#Net thrust}}
			The thrust from a jet engine is determined by the velocity of exhaust gases measured relative to the engine.

			The velocity of the exhaust gas as it leaves a jet engine is <math>V_j\;</math>:<ref name=FCT918>G. Van Wylen and R. Sonntag, ''Fundamentals of Classical Thermodynamics'', Section 9.18</ref>
			:<math>V_j^2=2(h_4-h_5)</math><br />
			where
			:{\| border="0"
			\|-
			\| <math>h_4\;</math> \|\| is the specific [[enthalpy]] of the gas leaving the turbine and entering the [[propelling nozzle]]
			\|-
			\| <math>h_5\;</math> \|\| is the specific enthalpy of the gas after it has left the propelling nozzle
			\|}


			Alternatively, <math>V_j\;</math> is related to the temperatures of the exhaust gas:<ref name=FCT918/>
			:<math>V_j^2=2 C_{p0} (T_4-T_5)</math><br />
			where
			:{\| border="0"
			\|-
			\| <math>C_{p0}\;</math> \|\| is the [[specific heat]] of exhaust gas at constant pressure
			\|-
			\|<math>T_4\;</math> \|\| is the temperature of the gas leaving the turbine and entering the propelling nozzle
			\|-
			\| <math>T_5\;</math> \|\| is the temperature of the gas after it has left the propelling nozzle
			\|}

			==Notes==
			{{Reflist}}

			==References==
			* Kerrebrock, Jack L. (1992), ''Aircraft Engines and Gas Turbines'', The MIT Press, Cambridge, Massachusetts USA. ISBN 0-262-11162-4
			* G. Van Wylen and R. Sonntag (1985), ''Fundamentals of Classical Thermodynamics'', 3rd edition, John Wiley & Sons, New York NY ISBN 04718293311 {{Please check ISBN\|reason=Invalid length.}}
			[[Category:Jet engines]]

en>Martinvl: Aligning with both WP:MOSNUM and the SI manual

2012-08-29T03:29:39Z

Aligning with both WP:MOSNUM and the SI manual

New page

Hi there. My name is Sophia Meagher even though it is not the name on my birth certificate. Office supervising is exactly where her main earnings comes from. What me and my family members love is to climb but I'm thinking on starting something new. Her family members life in Ohio.<br><br>my web site ... good psychic - [http://www.khuplaza.com/dent/14869889 Highly recommended Webpage] -