According to the article, at the same time, says Learjet 85 vice president Ralph Acs, Bombardier has changed the composites technology from the wet layup used by Grob and familiar to the European certification authorities to the prepreg material with which U.S. industry and the U.S. Federal Aviation Administration (FAA) is more accustomed.
The report says material certification and structural testing, meanwhile, has been subcontracted to the National Institute for Aviation Research (NAIR) in Wichita, Kan., close to the Learjet plant where the aircraft will be assembled and flight tested. "NIAR has a good relationship with the FAA and has been instrumental is choosing the materials," he says. The switch in materials technology followed input from an advisory council of composites experts, which has met twice since December. Several different composites will be used, but the material system selected for the overall airframe is a low-pressure, oven-cured out-of-autoclave carbon fiber, says Acs.
Information: Click here for original AviationWeek report.