NRC hosts Learjet 85 Aircraft for wind-tunnel testing

Citation

(2008), "NRC hosts Learjet 85 Aircraft for wind-tunnel testing", Aircraft Engineering and Aerospace Technology, Vol. 80 No. 6. https://doi.org/10.1108/aeat.2008.12780fab.020

NRC hosts Learjet 85 Aircraft for wind-tunnel testing

Article Type: News and views From: Aircraft Engineering and Aerospace Technology: An International Journal, Volume 80, Issue 6

The National Research Council Institute for Aerospace Research announces that Bombardier Aerospace chose its 1.5 m trisonic blowdown wind tunnel to test the high-lift aerodynamics of its prototype Learjet 85 aircraft (Figure 1). For over 15 years, the National Research Council Canada (NRC) tunnel has been Bombardier’s go-to place for high-lift tests, helping the company develop the high-lift systems for three other aircraft: the Global Express and Challenger 300 business jets and the CRJ700 regional jet.

Figure 1 The Learket 85, Bombardier Aerospace's first all-compsite structure aircraft

The configuration of NRC’s high-speed wind tunnel allows researchers to predict maximum lift and stall characteristics. This information, in turn, helps designers optimize an aircraft’s performance, particularly in the takeoff and landing configuration where high lift is required. In addition, the tunnel’s high-Reynolds number flow capability makes the facility an ideal tool for improving the aerodynamic performance of business and regional jets.

“We’re pleased that Bombardier Aerospace decided to bring the new Learjet 85 aircraft to NRC for testing because it builds on our past successful collaborations,” says Dr Steve Zan, Director of the NRC-IAR Aerodynamics Laboratory. “With its high Reynolds number capability, our 1.5 m trisonic blowdown wind tunnel provides a reliable, affordable way to develop regional and business jets. Clients can be confident that what works in the tunnel will work in flight.”

The new Learjet 85 aircraft will be Bombardier Aerospace’s first all-composite structure aircraft, allowing Learjet designers to maximize cabin comfort while minimizing drag and improving performance. Exceptional strength-to-weight ratio, reduced maintenance and extended service life are key characteristics of all composite airframes, as are the ultra smooth surfaces that permit superior aerodynamics