Fly-by-wire flight control systems are becoming more common in both civil and
military aircraft. These systems give many benefits, but also present a new set of
problems due to their increased complexity compared to conventional systems and
the larger choice of options that they provide. The work presented here considers
the application of fly-by-wire to a generic regional transport aircraft. The flying qualities criteria used for typical flying qualities evaluations are described
briefly followed by analysis of several past transport aircraft flying qualities programmes against these criteria. From these results, some control law independent
design requirements are formulated for a civil aircraft for the approach and landing
task. These control law independent flying qualities criteria are intended to be used
with any generic rate-like control law for a transport aircraft and enabled a number
of different control laws to be designed.
The results of a number of flying qualities evaluations are presented. Both an ILS
approach task and a formation flying task were used. The effects of windshear
were also considered. It was found that control laws which maintain flight path are
suitable for the ILS approach task, while most rate-like response characteristics give
good flying qualities for the formation flying task.
Finally, the conclusions drawn from these evaluations are presented, and both the
Civil and Military current airworthiness requirements are assessed.
In addition to the flying qualities work, a study is made of the management issues
associated with fly-by-wire design. A fly-by-wire aircraft design programme was
proposed and the project management issues associated with this were considered.
A timescale was proposed for the design process for a generic regional aircraft, and
the critical path for this process is presented. / EPSRC; Avro International Aerospace.
| Identifer | oai:union.ndltd.org:CRANFIELD1/oai:dspace.lib.cranfield.ac.uk:1826/9594 |
| Date | 09 1900 |
| Creators | Gautrey, Jim |
| Contributors | Cook, M. V. |
| Publisher | Cranfield University, College of Aeronautics (SoE) |
| Source Sets | CRANFIELD1 |
| Language | English |
| Detected Language | English |
| Type | Thesis or dissertation, Doctoral, EngD |
| Rights | This thesis is submitted in partial fulfilment of the requirements for the Degree of Doctor of Engineering. |
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