In-Flight Simulators and Fly-by-Wire/Light Demonstrators

Hamel, Peter G.

doi:10.1007/978-3-319-53997-3

Cited by 16 publications

(1 citation statement)

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“…Aircraft handling qualities were widely misunderstood at the early stages of aviation [5][6][7][8]. Pilot hands-on flight experience did not match theoretical predictions and understanding of desirable aircraft manoeuvrability derived from the equations of motion [9] and what theoreticians understood as desirable aircraft manoeuvrability.…”

Section: Historical Development Of Handling Qualities Investigationsmentioning

confidence: 99%

Development of a Multi-Directional Manoeuvre for Unified Handling Qualities Investigation

2019

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A slalom and alignment tracking manoeuvre was developed for multi-directional handling qualities analysis of large transport aircraft in simulation environments. The manoeuvre is defined and scaled as a function of aircraft characteristics, flight conditions using a simple set of mathematical models. Throughout the manoeuvre, the trajectory and overall performances are monitored at a set of gross position and alignment control checkpoints methodically distributed and sized to buoy the task and allow handling qualities analysis based on Cooper Harper Ratings and quantitative data analysis. Initial tests have shown that the manoeuvre sizing method led to feasible manoeuvres at multiple points of the flight envelope of a large civil transport aircraft. The manoeuvre capability to highlight desirable and undesirable handling qualities was also highlighted based on the initial findings for a couple of commercial large transport aircraft, a high aspect ratio wing and in-flight folding wingtip aircraft concepts. The relevance and applicability of the manoeuvre for multi-directional studies are discussed and compared against a more conventional offset landing manoeuvre. Finally, the potential use of the manoeuvre for different aircraft type and test flight is also suggested based on augmented reality technology.

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Section: Historical Development Of Handling Qualities Investigationsmentioning

confidence: 99%

Development of a Multi-Directional Manoeuvre for Unified Handling Qualities Investigation

2019

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Conservatism reduction for linear parameter‐varying control design facing inexact scheduling parameters illustrated on flight tests

Sato

Peaucelle

2020

Intl J Robust & Nonlinear

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This article addresses the design problem of linear parameter-varying (LPV) output feedback controllers that depend on inexact scheduling parameters for LPV systems. This problem has already been tackled and several methods have been proposed by overbounding the discrepancies between the actual scheduling parameters and the provided ones in the derivation of controller design condition. However, all methods in literature have conservatism in the overbounding, which is the main issue addressed in this article. We therefore propose a new overbounding for the discrepancies with the reverse use of Elimination lemma, which introduces no conservatism in theory. The new method is formulated in terms of bilinear matrix inequality, which is not tractable compared with linear matrix inequality, thus a practical design procedure composed of line search and iterative algorithm is shown. The effectiveness of our method is illustrated by an application to flight controller design for the lateral-directional motions of a research airplane MuPAL-and the consequently conducted flight tests.

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