▁Nobel ▁Mor al ▁originally ▁for ▁air sh ows , ▁but ▁has ▁been ▁adopted ▁by ▁Chinese ▁military ▁for ▁training ▁of ▁the ▁air ▁defense ▁force . ▁ ▁The ▁dr one ▁is ▁mainly ▁used ▁to ▁provide ▁real istic ▁visual ▁identification ▁training ▁of ▁the ▁ground ▁force ▁and ▁air ▁cre ws . ▁A H - 6 4 ▁Apache ▁dr one ▁is ▁constructed ▁of ▁metal ▁and ▁power ed ▁by ▁OS 3 2 ▁class ▁m eth an ol ▁engine . ▁Spec ification : ▁L ength ▁( m ): ▁ 1 . 1 5 ▁Width ▁( m ): ▁ 0 . 8 ▁Height ▁( m ): ▁ 0 . 4 ▁ ▁A iler on ▁less ▁U AV ▁A iler on ▁less ▁U AV ▁is ▁U AV ▁is ▁an ▁experimental ▁U AV ▁developed ▁by ▁Nobel ▁Mor al , ▁and ▁it ▁is ▁an ▁un mann ed ▁hel ic opter ▁in ▁co ax ial ▁layout ▁with ▁a iler on ▁elimin ated . ▁A iler on ▁less ▁U AV ▁is ▁a ▁rem ot ely ▁pil oted ▁vehicle ▁( R P V ), ▁and ▁its ▁development ▁was ▁completed ▁in ▁March ▁ 2 0 0 9 . ▁Spec ification : ▁L ength ▁( m ): ▁ 1 . 5 5 ▁Width ▁( m ): ▁ 0 . 5 5 ▁Height ▁( m ): ▁ 0 . 6 ▁ ▁Communic ation ▁relay ▁U AV ▁Communic ation ▁relay ▁U AV ▁( T ong - X un ▁Zh ong - J i - Y ong ▁Wu - R en ▁Z hi - Sh eng - J i , ▁ 通