Operating empty weight: Difference between revisions
pipe correct link, add References section |
No edit summary Tags: Mobile edit Mobile web edit |
||
(37 intermediate revisions by 29 users not shown) | |||
Line 1:
{{Short description|Aircraft weight without fuel or payload}}
{{Refimprove|date=February 2019}}
'''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.
The "'''Operating empty weight'''" (OEW) is the sum of the empty weight and the crew plus their baggage.
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]].
Operator items include fixed, optional equipment added by the operator for service reasons.
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.
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>
<!--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.-->
==See also==
* [[Maximum
* [[Aircraft
*[[Zero-fuel weight]]
==References==
{{reflist}}
{{DEFAULTSORT:Operating Empty Weight}}
[[Category:
{{Aviation-term-stub}}▼
|
Latest revision as of 18:33, 9 April 2024
This article needs additional citations for verification. (February 2019) |
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. The "Operating empty weight" (OEW) is the sum of the empty weight and the crew plus their baggage.
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. Operator items include fixed, optional equipment added by the operator for service reasons.
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.
Aircraft purchase price by type is a close linear function of EW.[1][2]
See also
[edit]References
[edit]- ^ R. K. Nangia (November 2006). "Operations and aircraft design towards greener civil aviation using air-to-air refuelling" (PDF). The Aeronautical Journal. Royal Aeronautical Society. Archived from the original (PDF) on October 21, 2013.
- ^ Javier Irastorza Mediavilla (March 13, 2010). "An aircraft worth its weight in gold?".