|Title||Vertical Navigation Displays: Pilot Performance and Workload During Simulated Constant Angle of Descent GPS Approaches|
|Publication Type||Journal Article|
|Year of Publication||2001|
|Authors||Oman, C. M., A. J. Kendra, M. Hayashi, M. Stearns, and J. Burki-Cohen|
|Journal||International Journal of Aviation Psychology|
|MVL Report Number||01.01|
|Keywords||cockpit displays, navigation displays, flight management systems,vertical navigation, VNAV|
This study compared the effect of alternative graphic or numeric vertical navigation(VNAV) aircraft cockpit displays on horizontal and vertical flight technical error (FTE),workload and subjective preference. Displays included: a) a moving map with altituderange arc, b) the same format, supplemented with a push-to-see profile view, including avector flight-path predictor, c) an equivalent numeric display, and d) a numeric non-VNAV display. Sixteen pilots each flew four different approaches with each format in aFrasca 242 simulator. Our VNAV displays reduced vertical FTE by as much as a factor oftwo without increasing workload. Relative advantages of the graphics formats arediscussed.