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Technology transfer of aircraft actuation to marine and propulsion

Journal of Mechanical Science and Technology volume 21, pages 950–954 (2007)Cite this article

Abstract

The most fundamental concept in designing multi-lane smart electromechanical actuation systems, besides meeting performance requirements, is the realization of high integrity. The main aim of this paper is to discuss fundamental consolidation designs and monitoring schemes in different architectures and to address threshold settings methodologies, inherent randomness, lane equalization, and control strategy. The analysis is based on a 4-lane actuation system capable of driving aerodynamic and inertial loads (with 2 lanes failed) of an aileron control surface similar to that of the Sea Harrier.

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Abbreviations

ATWi :

Control parameters in ANOVA

BTwi, … Cost00 :

Cost of accepting hypothesis ℜ0 when hypothesis ℜ0 is true

Cost11 :

Cost of accepting hypothesis ℜ1 when hypothesis ℜ1 is true

Cost01 :

Cost of accepting hypothesis ℜ0 when hypothesis ℜ1 is true

Cost10 :

Cost of accepting hypothesis ℜ1 when hypothesis ℜ0 is true

KA, KB :

Number of levels in the control

…:

factors ATWi, BTWi, …

Kc :

Number of interactions between ATWi, BTwi

K1 & K2 :

Constants to be evaluated

LATWi :

Levels of control parameter ATWLi

LBTWi :

Levels of control parameter BTWLi

M:

Mach Number

NATWi :

Number of simulation tests for control parameter ATWi

NBTWi :

Number of simulation tests for control parameter BTWi

Nobs :

Total number of observations

Pℜ0 :

Priori probability that hypothesis ℜ0 will occur

PR1 :

Priori probability that hypothesis ℜ1 will occur

S:

Sample size (to be determined) with certain confidence level

SSA :

Variation due to control parameter ATWi

SSAxB :

Variation due to interaction between ATWi and BTWi

SSB :

Variation due to control parameter BTWi

SSe :

Error sums of squares

SST :

Sums of squares

Tobs :

Sum of all observations

T obs :

Average of all observations =Tobs/ Nobs, global mean

ZT :

Threshold value

δa=18°|M :

18° Aileron deflection at Mach

=0.2:

Number 0.2

ℵ:

Expected Bays Risk value

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Authors and Affiliations

  1. Electrical and Electronic Engineering Department, University of Fukui, Fukui, Japan

    Fawaz Yahya Annaz

Authors
  1. Fawaz Yahya Annaz
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Correspondence to Fawaz Yahya Annaz.

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Annaz, F.Y. Technology transfer of aircraft actuation to marine and propulsion. J Mech Sci Technol 21, 950–954 (2007). https://doi.org/10.1007/BF03027075

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  • DOI: https://doi.org/10.1007/BF03027075

Keywords

  • Multi-lane electromechanical actuator