nxControl: Ground Mode for Manual Flight Control Laws with Longitudinal Load Factor Command
nxControl: Ground Mode for Manual Flight Control Laws with Longitudinal Load Factor Command
- New search for: Schreiter, K.
- New search for: Müller, S.
- New search for: Luckner, R.
- New search for: Manzey, D.
- New search for: Schreiter, K.
- New search for: Müller, S.
- New search for: Luckner, R.
- New search for: Manzey, D.
Abstract More complex flight trajectories and rising requirements on flight precision increase pilots’ workload during manual flight. The control augmentation system nxControl supports manual control by enabling pilots to command the longitudinal load factor $$n_x$$ instead of engine thrust and spoiler deflections in flight. The load factor $$n_x$$ is equivalent to the total energy angle and is directly influenced by thrust and aerodynamic drag. The system allows for higher precision with lower workload during manual flight. In order to prevent mode switching problems in the time-critical and demanding situations of take-off and landing the system was extended with a ground mode for aircraft control on ground and the transition phases. It controls forward thrust, spoilers, wheel brakes, and thrust reverser. This paper describes the design of the feedback controller considering common take-off and landing procedures as well as the pilots’ view. The resulting control laws of the ground mode as well as the new human-machine interface are presented. In a flight simulator study with seven airline pilots, the feasibility of the nxControl extension was tested in landing, taxi, and take-off scenarios. The results show, that the pilots were able to precisely manage the used runway length at landing. At taxi, the pilots could manage taxi speed with low command input frequency. The general performance during the take-off process, in particular in case of engine failure, was not influenced by nxControl.
Document information
nxControl: Ground Mode for Manual Flight Control Laws with Longitudinal Load Factor Command
2017-12-15
21 pages
Article/Chapter (Book)
Electronic Resource
English
Similar titles
nxControl: Ein Beitrag zum reglergestützten manuellen Fliegen
| TIBKAT | 2020
nxControl: Ein Beitrag zum reglergestützten manuellen Fliegen
| TIBKAT | 2020
Design and Flight Testing of Manual Nonlinear Flight Control Laws
| British Library Conference Proceedings | 2011