Chris Geoghegan has been appointed COO of BAE SYSTEMS. Mike Turner, CEO, will retain the responsibilities he previously held for the company's relationship with Airbus. Nick Franks was appointed group managing director, Avionics Group. He was previously managing director, Gripen and South Africa.   . . .   White Electronic Designs Corp.'s Display Products Div. has received a $1.1 million order for displays using super-bright low-reflection technology for avionics applications, such as cockpit instrumentation in commercial business jets and air transport planes, where ambient light precludes the use of conventional flat panel displays.