http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Operating_empty_weightOperating empty weight - Revision history2026-05-09T18:02:29ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Operating_empty_weight&diff=2620553&oldid=prev2001:4C4E:12CC:2300:4D90:8F44:E28F:C7B9 at 18:33, 9 April 20242024-04-09T18:33:13Z<p></p>
<p><b>New page</b></p><div>{{Short description|Aircraft weight without fuel or payload}}<br />
{{Refimprove|date=February 2019}}<br />
'''Empty weight''' (EW) is the sum of the ‘as built’ [[manufacturer's empty weight]] (MEW), plus any standard items (SI) plus any operator items (OI), EW = MEW + SI + OI. The EW is calculated for each aircraft series and each unique configuration of an aircraft and is confirmed by periodically weighing it.<br />
The "'''Operating empty weight'''" (OEW) is the sum of the empty weight and the crew plus their baggage. <br />
<br />
Standard items include all structural modification or configuration orders that may have altered the MEW, including all fluids necessary for operation such as [[engine oil]], [[engine coolant]], [[water]], [[hydraulic fluid]] and [[unusable fuel]].<br />
Operator items include fixed, optional equipment added by the operator for service reasons.<br />
<br />
The weight added to the aircraft above its OEW for a given flight is variable and includes fuel for the flight and the [[cargo]]. Cargo depends upon the type of aircraft; i.e., passengers plus baggage for a transport or commuter airplane, materiel for a cargo airplane, stores for fighters/bombers and service loads such as meals and beverages. Fuel and cargo weights may alter the centre of gravity and flight performance, and require careful calculation before each flight.<br />
<br />
Aircraft purchase price by type is a close [[linear function]] of EW.<ref>{{cite web|author=R. K. Nangia |title=Operations and aircraft design towards greener civil aviation using air-to-air refuelling |url=http://www.greenerbydesign.org.uk/_FILES/publications/3088.pdf |work=The Aeronautical Journal |publisher=[[Royal Aeronautical Society]] |date=November 2006 |url-status=dead |archiveurl=https://web.archive.org/web/20131021064242/http://www.greenerbydesign.org.uk/_FILES/publications/3088.pdf |archivedate=October 21, 2013 }}</ref><ref>{{cite web |date= March 13, 2010 |title= An aircraft worth its weight in gold? |author= Javier Irastorza Mediavilla |url= http://theblogbyjavier.com/2010/03/13/an-aircraft-worth-its-weight-in-gold/}}</ref><br />
<!--Unsourced statement: The term Operating Empty Weight was established in 1935 when young engineer Josef Pipek from was trying to determine the maximum payload for his new purchased Douglas DC-3.--><br />
<br />
==See also==<br />
* [[Maximum takeoff weight]]<br />
* [[Aircraft gross weight]]<br />
*[[Zero-fuel weight]]<br />
<br />
==References==<br />
{{reflist}}<br />
<br />
{{DEFAULTSORT:Operating Empty Weight}}<br />
[[Category:Aircraft weight measurements]]<br />
<br />
<br />
{{Aviation-stub}}</div>2001:4C4E:12CC:2300:4D90:8F44:E28F:C7B9