 The Hunting H.126 is highly unorthodox aircraft; according to Flight, development "posed numerous aerodynamic, thermodynamic and structural problems... the ducting of hot gases, large changes of trim which occur with such a large variation in lift coefficient, and the inter-relation between control jets... and the conventional elevator and rudder controls".Despite this, several aspects of the aircraft, such as its fixed nosewheel undercarriage, were relatively conventional.There was a deliberate effort to avoid unnecessary complexity, partially as it was felt that testing of the jet flap concept should be carried out in several manageable stages.