1993-05-01

Preliminary Design of a Single Engine Business Jet 931253

The preliminary design of a single engine business jet is presented. The airplane is intended to fill a market niche surrounded by several types of airplanes: single engine (piston and turboprop) and entry-level twin engine airplanes (turboprop and turbofan). The Williams-Rolls FJ44 turbofan engine, with a takeoff thrust rating of 1900 pounds, is chosen as the powerplant because of its low acquisition and maintenance costs. The airplane is designed to carry four persons and baggage 1500 n.m. with VFR reserves, and is intended to meet FAR 23 standards — including the 61 knot single engine stall speed requirement. A parametric analysis of wing aspect ratio, thickness, and taper is performed to determine the best planform from the standpoint of weight, cruise speed, and cost. Maximum cruise speed is estimated to be 371 knots and the airplane purchase price is estimated to be 1.98 million. These results indicate the airplane will satisfy intended market niche.

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