A flight investigation was conducted with a variable stability helicopter to determine the effects of variations in controls and displays on helicopter instrument approach capabilities. The baseline instrument approach task was a decelerating approach to a hover along a 6 deg glide slope. Pilot evaluations were obtained for both the constant speed part of the task and the deceleration and hover part of the task. The attitude stability augmentation system (SAS) was strongly preferred over the rate SAS because the aircraft had a divergent pitch response. From a display variation standpoint, it was not possible to decelerate to a hover in a consistent manner, regardless of the control system employed, with situation information only. In particular, the deceleration and hover part of the task was unacceptable without flight director command information.
The effect of variations in controls and displays on helicopter instrument approach capability
1977-02-01
Miscellaneous
No indication
English
Helicopter Unique Instrument Approaches: Trajectories, Flying Qualities, Controls and Displays
British Library Conference Proceedings | 1994
|Helicopter Unique Instrument Approaches: Trajectories, Flying Qualities, Controls and Displays
SAE Technical Papers | 1994
|Integrated avionics-controls and displays for helicopter IFR operation
Tema Archive | 1975
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