Method for dive characteristics evaluation of the attack aircraft

Аuthors

Karpenko O. N.^*, Kostin P. S.^**

Air force academy named after professor N.E. Zhukovskii and Y.A. Gagarin, Voronezh, Russia

*e-mail: kaska79@yandex.ru.
**e-mail: texnnik@mail.ru

Abstract

The article considers the isssue of determining the aircraft dive characteristics based on simulation. To achieve the goal of the study, a software-modeling complex was developed, which allows evaluate the characteristics of a dive attack aircraft. To achieve the goal of the study, a software-modeling complex was developed, which allows evaluate the characteristics of a dive attack aircraft. All models and most of the blocks are implemented in the Matlab@Simulink software package.

With a view of performing simulation of the attack aircraft dive and pullout the aircraft control laws were developed. These control laws were formed in accordance with the requirements of the guidelines for the attack aircraft flight operation.

The time of the pullout time and altitude change while the pullout were determined by the simulation results at various flight modes. The simulation was performed with pitch angles from – 20 to – 60° with an interval of 10° and at velocities from 600 to 900 km / h with an interval of 50 km / h.°

A nomogram for determining the altitude loss while the pullout as a dependence from the values of airspeed, dive angle and normal overload at the end of pullout was plotted based on the simulation results.

The presented method of dive characteristics estimating allows reduce the time, financial and labor costs for the relevant tests of an aircraft.

Keywords:

modelling, control, dive characteristics, software package

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