15 November 2013
Following four weeks of wind-tunnel tests by Boeing and NASA at the Ames Research Center’s National Full-Scale Aerodynamic Facility, a full-scale 757 tail with sweeping jet active flow control (AFC) showed increased rudder effectiveness. NASA’s Environmentally Responsible Aviation (ERA) program funded the project, which aims to increase sideforce 20% on demand, and shrink the vertical tail by 17% to reduce aircraft fuel burn by 1-2%. These wind tunnel tests demonstrated a 20-30% increase in the sideforce, as well as an optimum actuator distribution and mass flow for a 2015 test flight for Boeing’s Eco Demonstrator program. NASA is also participating in that part of the project. (Image Credit: Boeing)
More Info > (Aviation Week)