LQR CONTROL FOR A SMALL SCALE HELICOPTER IN HOVER FLIGHT CONDITION - Ariyanto, Mochammad; Mechanical Engineering Department, Faculty of Engineering UNDIP Jl. Prof. Soedharto, SH, Tembalang, Semarang e-mail: ari_janto5@yahoo.co.id (Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik, 2012)