The KhAI-90 Light Civil Turboprop Airplane Pilot Project

Abstract The pilot project of new light civil turboprop aircraft, called the KhAI-90, featuring a cruising speed 350km/h, payload 600 kg at 500 km range, and equipped with two Rolls-Royce 250-B17F engines each power 420 hp (alternatively, AI-450C 450 may be installed) is presented herein. Based on developed technical task, concept for creating KhAI-90 competitive analysis prototypes’ aircraft parameters characteristics, main tactical requirements are assigned. take-off weight determined in three approximations preliminary design stage using iterative software “CLA-TOW”, studying influence wing geometric lift devices aerodynamic performance, power-to-weight ratio airplane parameters. following calculated design: minimum W TO min = 3,600 kg, optimal loading p 0 opt 130 daN/m 2 , aspect 9.6, taper 2.25, sweep angle leading edge 3 degrees, airfoil relative thickness 10.6%. A general view three-dimensional parametric models master-geometry passenger cabin space distribution constructed by means SIEMENS NX computer integrated system. More broadly, this has also demonstrated viability method we previously reported determining