The algorithm of generation of the initial states set for the launch of the gliding unmanned aerial vehicle in the problem of attainability of the given set of navigation points

Аuthors

Grumondz V. T.^1*, Polishcuk M. A.^2**

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. GNPP "Region", 13a, Kashirskoe shosse, Moscow, 115230, Russia

*e-mail: v.grumondz@gmail.com
**e-mail: maxipol@mail.ru

Abstract

The paper considers a gliding unmanned aerial vehicle (UAV), which is equipped with a high-aspect- ratio wing and pneumatic control actuators. These elements make the long-range flight of the UAV possible. The UAV is the newest aircraft type with improved efficiency.
The paper considers the problem of selection of aerodynamic and dynamic configuration of the gliding UAV. This selection should provide a substantial improvement of the flight performance and dynamic characteristics of the analyzed gliding UAV. The task is solved by the usage of the configuration elements, which can be regarded as new for the UAV design practice. These elements include a high-aspect-ratio wing and pneumatic control actuators. The mathematical model of the UAV motion and the problem solution algorithm for all path segments were created. The aerodynamic characteristics of the wing were chosen. Together with the control algorithm these characteristics provide maximization of the projected length of the UAV flight path onto a horizontal plane (in particular case, maximization of the actual flight range). The parameters of the angle stabilization and target guidance system were chosen as well. The algorithm for the solution of the mentioned above problems under additional conditions was created. These additional conditions include the following: the requirement for flying over the arbitrarily assigned set of navigation points on the earths surface; the task of maximization of the absolute values of the flight path angle at the end of the trajectory (target approach). Such research is topical for many practical problems of UAV target guidance. The results show that the maximum flight range can be increased by at least 75% compared to that of the existing modern Russian analogues.
The paper considers the problem of construction of the algorithm for generation of the initial state set for the launch of gliding UAV from the carrier. This problem is considered as a part of a task of providing attainability of the given set of navigation points for the designed UAV. One of the points of this set is the target point. The above mentioned task takes into account the constraint of the maximum value of the total energy of the UAV, which is transferred to it at the moment of launch. The paper also shows the dependency of the parameters of the initial state set on the number of navigation points and their location on the earths surface.
The complexity of this problem is rather high due to the given set of navigation points. This complexity is the main difference between the presented algorithm and algorithms that were used in the standard situations. This paper serves as a continuation of papers [1] and [4].

Keywords:

high aspect ratio wing, the mathematical model, gliding unmanned aerial vehicle, targeting, stabilization, planning, navigation points set, initial states set

References

1. Grumondz V.T., Polishchuk M.A., Chertoryzhskaya S.S., Krivoguz A.S. Izvestiya VUZov. Aviatsionnaya tekhnika, 2012, no. 3, pp. 22-27.
2. Grumondz V.T., Polishchuk M.A., Chertoryzhskaya S.S. Vestnik Moskovskogo aviatsionnogo instituta, 2012, vol. 19, no. 4, pp. 5-12.
3. Grumondz V.T., Yakovlev G.A. Algoritmy aerogidroballisticheskogo proektirovaniya (Aero-hydro ballistic design algorithms), Moscow, MAI, 1994, 304 p.
4. Solovei E.Ya., Khrapov A.V. Dinamika sistem navedeniyaupravlyaemykh aviabomb (Dynamics guided bombs homing systems), Moscow, Mashinostroenie, 2006, 327 p.