DAMPING OF OSCILLATIONS IN FLIGHT CONTROL CIRCUITS OF SCHOOL AND TRAINING AIRCRAFT
Journal Title: INCAS BULLETIN - Year 2010, Vol 2, Issue 1
Abstract
The specific developments of Dutch roll mode have shown a number of flight dynamics deficiencies, prevailing in aircraft with fixed (non-assisted) controls in which the damping factor is at level 2. The project deals with the lateral motion damping (damper of gyration) issue according to the flight regulations, for an envelope as wide as possible, but mainly referring to missions involving the Dutch roll type developments. The undertaken analysis takes as a reference the school and training aircraft IAR – 99. The execution equipment, an actuator assisted by a servo valve, ensures the system efficiency of self-stabilization system SAS providing low execution times and high precision. The relationship between the flight quality parameters related to characteristics of lateral-directional motion modes, depending on gravimetric-inertial and aerodynamic parameters of the airplane is envisaged to meet the regular levels of flying qualities. The proposed calculation method can be used both for flight qualitative analysis and for defining the overall conditions for meeting the quality flight regulations. These conditions can serve as a basis for assessing the possibilities to remedy the above-mentioned deficiencies mater.
Authors and Affiliations
Bogdan DOBRESCU, Radu BOGATEANU, Ion NILĂ
Keywords
Related Articles
- EP ID EP155354
- DOI 10.13111/2066-8201.2010.2.1.2
- Views 105
- Downloads 0
Runway incursions – clear and constant danger
Runway safety plays an important role in aviation industry. This paper deals with runway safety – runway incursion as a serious safety concern. Focusing attention on this issue is necessary due to many collisions with a...
On the evaluation of mechanical properties of honeycombs by using finite element analyses
This paper presents some general two- and three-dimensional finite element models to study the equivalent orthotropic mechanical properties of honeycombs. The models are developed on a representative volume element with...
Preliminary Estimation Methods for the Definition of the Landing Gear
The landing gear of an aircraft is an important part of the aircraft structure. The landing and the taking off are most critical parts of a flight mission. The main goal of this paper is to provide a methodology for desi...
Numerical Simulations of Flow in Axial Compressor System, Preparatory Steps for Active Control
For most compressor flows, the existence of turbulent shear stresses is essential to compensate and overcome the adverse pressure gradients without separation. The performance of compressor improves as the turbulent stre...
Image Compression Using Wavelet Methods
This paper aims to study and compare the compression efficiencies of wavelet-bitmap and wavelet-Huffman. Both methods use wavelet to deduct a portion of the information in the image that can endure losing it without a si...