Dichotomic Structure of DAEs Solutions for the Aircraft Control
Journal Title: INCAS BULLETIN - Year 2009, Vol 1, Issue 1
Abstract
The paper has its roots in earlier studies focused on DAEs solutions, for the aircraft flight control and intends to be a synthesis of them. The main goal is to structure the solution for the control laws so as to derive its components, which control any significant mechanical phenomenon for the controlled flight. The basic method used becomes from a unified manner of finding the solution of DAEs using a rigorous guideline stated as “necessary and sufficient condition” in an algebraic equation form that is used in an algorithmic procedure and for statement of the equations, which emphasises the dichotomic structure. The viewpoint considers an extended DAE system, including the differential equations of control variables, that allows to formulate this question as an inverse problem and to regard the algebraic equation, for constraints, as a singular implicit solution of the differential subsystem. Stating the necessary and sufficient condition for an implicit equation be a singular implicit solution of the extended differential system, we use it to approach the solution for flight control and for its dichotomic structure with additive components.
Authors and Affiliations
Sorin Ştefan RADNEF
Aerodynamic Analysis of C-Wing Aircraft
In the recent years, the researchers focused on the development of long-range aircraft with the commercial aid of nonconventional design concepts. The C-wing concepts for large aircraft are highly preferred to overcome t...
Modelling the wear processes of the automotive brake pad and disc
The automotive disc braking system is based on the friction between a disc and two pads and this friction determines their wear. The theoretical study proposed in this paper aims to model this wear process. It is based o...
Unsteady Flow in a Horizontal Double-Sided Symmetric Thin Liquid Films
In this paper a mathematical model is constructed to describe a two dimensional incompressible flow in a symmetric horizontal thin liquid film for unsteadies flow. We apply the Navier-Stokes equations with specified boun...
Thermal Effects on Single - Lap, Single - Bolt, Hybrid Metal – Composite Joint Stiffness
A three-dimensional finite element model has been developed to study the temperature effects on stiffness in linear-elastic range of the bolted metal-composite joints. In this study a quasi - symmetric lay - up for CFRP...
Comprehensive study of endurance for IAR-99 Hawk
The paper presents some methods of on-ground and in-flight calibration for strain gauges, intended to the development of complex programs which analyze the endurance phenomena for aerospace structures, with direct applic...