The work contained in this report is part of an on-going programme of research intohandling qualities of fly-by-wire civil transport aircraft currently being undertakenwithin the Flight Dynamics Group of the College of Aeronautics .Although much work has been undertaken into handling qualities of military aircraftover the last 30 years, civil aircraft have received considerably less attention. Over thelast decade civil transport aircraft incorporating fly-by-wire flight control systemshave been introduced into commercial operation, the latest including some modifiedaerodynamic designs. However the civil arena lacks the supportingresearch into handling qualities that the military side has enjoyed. More recently thecivil side is beginning to receive the attention it deserves with work in Europe byFokker and the Group for Aeronautical Research and Technology inEURope (GARTEUR), for example. In the United States much work hasbeen done by the manufacturers such as Boeing andMcDonnell Douglas, and as ever work supported by the USAir Force and NASA.The primary aim of this current programme is to design flight control laws to givefly-by-wire civil transport aircraft excellent flying qualities at all flight conditions,but especially in piloted flight phases. The most critical flight phase of a civiltransport is that of the landing approach, and, as with other studies of this type, thisphase receives the greatest attention in this study.This report concerns an analysis of the C* parameter. The C* criterion was one of thefirst handling qualities criteria designed to take account of advanced aerodynamicdesigns of modern aircraft and higher order systems introduced by flight controlsystems. Several aircraft have since employed control laws based around the C*parameter. A proportional feedback C* controller was applied to a Boeing 747-100 inlanding approach configuration, and assessed against the C* criterion and the USmilitary specification MIL-STD- 1797A.
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机译：本报告中的工作是航空学院飞行动力学小组目前正在进行的一项研究电传飞行民用运输机质量的正在进行的计划的一部分。在过去的30年中，军用飞机受到的关注大大减少。在过去的十年中，结合了电传飞行控制系统的民用运输飞机已被引入商业运营，最新的飞机包括一些改进的空气动力学设计。然而，民用领域缺乏军事方面享有的对处理质量的支持性研究。最近，例如在福克和欧洲航空研究与技术集团（GARTEUR）在欧洲的工作中，民间方面开始受到应有的重视。在美国，波音公司和麦克唐纳·道格拉斯公司等制造商已经做了很多工作，并且一如既往地受到美国空军和美国国家航空航天局的支持。当前计划的主要目的是设计飞行控制法，以实现电传民用运输。飞机在所有飞行条件下均具有出色的飞行质量，但在无人驾驶飞行阶段尤其如此。民用运输机最关键的飞行阶段是着陆进近阶段，与其他此类研究一样，该阶段在本研究中得到了最大的关注。本报告涉及对C *参数的分析。 C *准则是第一个处理质量准则，旨在考虑现代飞机的先进空气动力学设计和由飞行控制系统引入的高阶系统。此后有几架飞机采用了基于C *参数的控制定律。将比例反馈C *控制器应用于波音747-100内陆进近配置，并根据C *标准和美国军用规格MIL-STD-1797A进行了评估。
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