Scaled Composites Sierra

The Scaled Composites Sierra, company Model 401, is an American experimental aircraft designed and produced by Scaled Composites at Mojave, California, and introduced in 2017. Two examples were built for an unnamed customer to demonstrate advanced, low-cost manufacturing techniques for research aircraft for industry and government. It is a single-seat prototype of broadly conventional layout, with a pressurized cockpit under a bubble canopy, a single jet engine and retractable tricycle landing gear. It is a low-wing cantilever monoplane of composite construction, with lightly swept constant-chord wings of 38 foot span, a butterfly or V tail and a fuselage also 38 feet long. Empty weight is about 4,000 pounds and gross takeoff weight 8,000 pounds. Power comes from a single Pratt & Whitney Canada JT15D-5D turbofan, and the first flight was on October 11, 2017.