Mkuu usifikirie ni ngumu kiasi hicho unachodhani wewe,najua kwa akili zako unakuwa unawaza engine ilipotokea ndio maana neno assembly likakutoka,kwa kukusaidia ni kwamba Modern helicopter engines are turbine rather than piston type and are purchased from an engine supplier. The helicopter manufacturer may purchase or produce the transmission assembly, which transfers power to the rotor assembly. Transmission cases are made of aluminum or magnesium alloy.in this case we have choosen to purchase and not to produce an engine na hiyo haimaanishi kwamba hatujaitengeneza sisi.
kuna stage nyingi za muhimu katika kutengeneza helicopter ambazo mtengenezaji lazma azipitie ili aw ndiye aliyetengeneza hiyo helicopter na ndicho tulichokifanya kuanzia Airframe Preparing and the tubing design,Forming sheet metal details,Making the cores of composite components,Making the fuselage,Specify the engine, transmission and rotors,design and install Systems and controls,na Final assembly.
Hata hivyo kama ulikuwa haujui ni kwamba Rolls Royce ndio mtengenezaji na designer wa engines za Airbus and Boeing lakini haimaanishi kuwa RR ndio watengenezaji wa Airbus au Boeing.