Editing Unmanned aerial vehicle (section)

===Flight envelope===
UAVs can be programmed to perform aggressive maneuvers or landing/perching on inclined surfaces,<ref>{{Cite web|title = Teaching tiny drones how to fly themselves|url = https://arstechnica.com/information-technology/2012/11/a-beautiful-robotic-mind/1/|website = Ars Technica|access-date = 4 February 2016|date = 27 November 2012|archive-date = 5 February 2016|archive-url = https://web.archive.org/web/20160205171813/http://arstechnica.com/information-technology/2012/11/a-beautiful-robotic-mind/1/|url-status = live}}</ref> and then to climb toward better communication spots.<ref>{{Cite web|url=http://bdml.stanford.edu/Main/MultiModalRobots|title=Biomimetics and Dextrous Manipulation Lab – MultiModalRobots|website=bdml.stanford.edu|access-date=21 March 2016|archive-date=23 March 2016|archive-url=https://web.archive.org/web/20160323135154/http://bdml.stanford.edu/Main/MultiModalRobots|url-status=live}}</ref> Some UAVs can control flight with varying flight modelisation,<ref>{{Cite web|title = The astounding athletic power of quadcopters|url = http://www.ted.com/talks/raffaello_d_andrea_the_astounding_athletic_power_of_quadcopters#t-1461|website = www.ted.com|access-date = 4 February 2016|first = Raffaello|last = D'Andrea| date=11 June 2013 |archive-date = 5 February 2016|archive-url = https://web.archive.org/web/20160205181354/http://www.ted.com/talks/raffaello_d_andrea_the_astounding_athletic_power_of_quadcopters#t-1461|url-status = live}}</ref><ref>{{Cite journal|title = Design of Flight Control System for a Small Unmanned Tilt Rotor Aircraft|journal = Chinese Journal of Aeronautics|date = 1 June 2009|pages = 250–256|volume = 22|issue = 3|doi = 10.1016/S1000-9361(08)60095-3|first1 = Song|last1 = Yanguo|first2 = Wang|last2 = Huanjin|doi-access = free| bibcode=2009ChJAn..22..250Y }}</ref> such as VTOL designs.

UAVs can also implement perching on a flat vertical surface.<ref>{{Cite web|title = The device, designed for landing UAV helicopter type on a flat vertical surface|url = https://patents.google.com/patent/RU160508U1/en?inventor=%D0%90%D0%BD%D0%B4%D1%80%D0%B5%D0%B9+%D0%98%D0%B2%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%87+%D0%91%D0%BE%D0%B4%D1%80%D0%B5%D0%BD%D0%BA%D0%BE|website = patents.google.com|access-date = 6 November 2016|archive-date = 7 March 2017|archive-url = https://web.archive.org/web/20170307103055/https://patents.google.com/patent/RU160508U1/en?inventor=%D0%90%D0%BD%D0%B4%D1%80%D0%B5%D0%B9+%D0%98%D0%B2%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%87+%D0%91%D0%BE%D0%B4%D1%80%D0%B5%D0%BD%D0%BA%D0%BE|url-status = live}}</ref>