Editing Airship (section)

===Aerostat===
An [[aerostat]] is an [[aircraft]] that remains aloft using buoyancy or static lift, as opposed to the [[aircraft|aerodyne]], which obtains lift by moving through the air. Airships are a type of aerostat.<ref name="ege">Ege (1973).</ref> The term ''aerostat'' has also been used to indicate a tethered or [[moored balloon]] as opposed to a free-floating balloon.<ref>{{cite web|url=http://www.oed.com/;jsessionid=07EA994A2F49A80A15E17252C57AC109?authRejection=true&url=%2Fview%2FEntry%2F3207%3FredirectedFrom%3Daerostat|title=Home : Oxford English Dictionary|access-date=2018-01-18}}</ref> Aerostats today are capable of lifting a payload of {{convert|3,000|lb}} to an altitude of more than {{convert|4.5|km}} above sea level.<ref name=":0">{{Cite book|title=Principles of Integrated Maritime Surveillance Systems|url=https://archive.org/details/principlesintegr00ince|url-access=limited|last1=Ince|first1=A. Nejat|last2=Topuz|first2=Ercan|last3=Panayirci|first3=Erdal|publisher=Springer Science + Business Media, LLC|year=1998|isbn=9781461374046|location=New York|pages=[https://archive.org/details/principlesintegr00ince/page/n217 204]}}</ref> They can also stay in the air for extended periods of time, particularly when powered by an on-board generator or if the tether contains electrical conductors.<ref name=":0" /> Due to this capability, aerostats can be used as platforms for telecommunication services. For instance, Platform Wireless International Corporation announced in 2001 that it would use a tethered {{convert|1,250|lb}} airborne payload to deliver cellular phone service to a {{convert|140|mi}} region in Brazil.<ref>{{Cite news|url=https://www.computerworld.com/article/2591179/mobile-wireless/giant-aerostats-developed-for-rural-cell-phone-service.html|title=Giant Aerostats Developed For Rural Cell Phone Service|last=Brewin|first=Bob|work=Computerworld|access-date=2018-08-29|language=en}}</ref><ref>{{Cite book|title=Tactical Communications for the Digitized Battlefield|url=https://archive.org/details/tacticalcommunic00ryan|url-access=limited|last1=Ryan|first1=Michael|last2=Frater|first2=Michael|publisher=Artech House|year=2002|isbn=9781580533232|location=Boston, Massachusetts|pages=[https://archive.org/details/tacticalcommunic00ryan/page/n332 315]}}</ref> The [[European Union]]'s ABSOLUTE project was also reportedly exploring the use of tethered aerostat stations to provide telecommunications during disaster response.<ref>{{Cite news|url=https://news.nationalgeographic.com/news/2013/06/130618-google-balloon-wireless-communication-internet-hap-satellite-stratosphere-loon-project/|archive-url=https://web.archive.org/web/20130620173300/http://news.nationalgeographic.com/news/2013/06/130618-google-balloon-wireless-communication-internet-hap-satellite-stratosphere-loon-project/|url-status=dead|archive-date=June 20, 2013|title=Google's Loon Project Puts Balloon Technology in Spotlight|last=Handwerk|first=Brian|date=2013-06-18|access-date=2018-08-29}}</ref>