Related Articles Editor's NotesNewsWorld News “အမေရိကန်တို့.. အိမ်အပြန်” NewsWorld News Save Italy!!! Health & FitnessMyanma NewsNewsSouth East AsiaWorld News ၀◌ူဟနျ ကာကှယျဖို့ NewsSciences & ResourcesWorld NewsWorld’s Smallest Co-axial Helipcopter smytu1996December 11, 20102min780 This is the GEN H-4. It is the world’s smallest co-axial helipcopter. It is powered by four GEN125 engines, producing 40hp @ 6800-7500rpm and boasts a shock absorbent aluminum frame. It has a maximum cruising speed of 55mph. The GEN H-4 will cost you a whopping $35, 000. Post Views: 78