ogo " ▁machine ▁that ▁takes ▁off ▁and ▁lands ▁straight ▁up . ▁It ▁is ▁a ▁st um py - looking ▁machine ▁with ▁four ▁tail f ins , ▁each ▁with ▁landing ▁g ear ▁on ▁the ▁f int ip , ▁and ▁a ▁wing ▁that ▁p iv ots , ▁allowing ▁it ▁to ▁be ▁aligned ▁with ▁the ▁aircraft ▁center line ▁in ▁cru ise ▁flight ▁and ▁at ▁a ▁right ▁angle ▁to ▁the ▁center line ▁in ▁hover ▁flight . ▁ ▁The ▁Golden ey e ▁is ▁built ▁of ▁graph ite ▁and ▁fi berg lass ▁compos ites , ▁and ▁has ▁a ▁low ▁rad ar , ▁inf ra red , ▁and ▁ac oust ic ▁signature . ▁It ▁is ▁power ed ▁by ▁a ▁ 2 8   k W ▁( 3 8   hp ) ▁W ank el - rot ary ▁engine ▁from ▁AV ▁Eng ines ▁Ltd ▁in ▁the ▁UK . ▁It ▁has ▁an ▁autonom ous ▁flight ▁control ▁system ▁with ▁G PS - IN S ▁navigation . ▁ ▁The ▁Golden ey e ▁can ▁carry ▁a ▁small ▁elect o - opt ic ▁sensor ▁tur ret ▁or ▁other ▁payload ▁and ▁features ▁a ▁radio ▁dat al ink . ▁Appar ently ▁the ▁D AR PA ▁specification ▁myster iously ▁required ▁that ▁it ▁be ▁able ▁to ▁carry ▁" two ▁co ke - can ▁size ▁pay loads " ▁that ▁were ▁not ▁described ▁further . ▁Aur ora ▁is ▁working ▁on ▁a ▁half - scale ▁version ▁of ▁the ▁Golden ey e ▁for ▁commercial ▁sales . ▁ ▁Spec ifications ▁( G old en ey e ▁ 1 0 0 ) ▁ ▁References ▁ ▁This