Odezva lehkého letounu na průlet poryvem

Response of light aircraft under gust loads

journal article - other

en

In general, there are two methods widely accepted by the aeronautical authorities. Both of them are implemented in the world leading sets of aeronautical safety requirements. The deterministic method describes the ‘worst case’ atmospheric gust approach. The nature of the gust field is reduced to a form of one dominant discrete gust with closer shape specification. The second approach belongs to the family of statistical methods. The atmosphere is described by the power spectral density function and transforms the problem from the time to a frequency domain. For both methods a set of gust velocities for specific flight conditions has been defined.

V obecnosti jestvují dvě, leteckými úřady široce akceptované metody a obě jsou implementovány do světově rozšířených leteckých předpisů. Deterministická metoda popisuje případ nejhoršího atmosférického poryvu. Povaha poryvového pole je redukována do podoby jednoho dominantního diskrétního poryvu s blíže specifikovaným tvarem (1-cos). Druhý přístup patří do rodiny statistických metod. Atmosférická turbulence je popsána funkcí spektrální výkonové hustoty a transformuje problém z časové domény do frekvenční. Pro obě metody byla definována sada poryvových rychlostí

In general, there are two methods widely accepted by the aeronautical authorities. Both of them are implemented in the world leading sets of aeronautical safety requirements. The deterministic method describes the ‘worst case’ atmospheric gust approach. The nature of the gust field is reduced to a form of one dominant discrete gust with closer shape specification. The second approach belongs to the family of statistical methods. The atmosphere is described by the power spectral density function and transforms the problem from the time to a frequency domain. For both methods a set of gust velocities for specific flight conditions has been defined.

computational aeroelasticity, gust loading, dynamic response estimation, finite element model, unsteady aerodynamics, advanced modeling techniques

2004

06.06.2004

The Czech Technical University in Prague Publishing House

Prague

1210-2709

1210-2709

Acta Polytechnica

Acta Polytechnica

2

2/2004

6