Aerial vehicles are a trending topic amid engineers and scientists. With the advent of drones and multicopters, they strenuously began to study the control of such aircrafts, not only in normal flight mode, but also in the case of troubles. For example, if quadcopter has two symmetric faulty motors it is called a as bispinner [5]. Bispinner is an example of a new type of aircraft, the main feature of which is the continuous rotation around the vertical axis. The prefix in the name of the aircraft indicates the number of propellers in the aircraft. The appearance of aircraft of this type has put forward new requirements of safety when debugging control algorithms at the initial stage, because between the takeoff and the crush landing of such an aircraft with no proper control takes very little time. The use of simulators and plants can significantly reduce the risks of falling aircraft. Therefore, to study a tree-degree-of-freedom (3DOF) bispinner with shifted center of mass may be a promising start, as it is relatively simpler than 6DOF heavy quadcopter with two symmetric faulty motors.

In this paper, we present a fast algorithm of time synchronization between User Equipment (UE) and Base Station (BS) which is suitable for Long Term Evolution (LTE) Random Access Channel (RACH). The algorithm reduces the complexity more than 1.5 times. Further, if the SNR is above a threshold, the algorithm allows to extremely reduce the complexity of synchronization more than 3 times. The presented method uses the sparse nature of a time synchronization problem, where the spike of a cross-correlation between received signal and local RACH preamble indicates correct time delay.

The article considers the problem of mixed control of an unmanned aerial vehicle with aerodynamic and reactive controls. The main criterions of formation mixed control are formulated and generalized estimate of efficiency reactive control channel functioning in tasks of damping oscillation processes caused by nonlinear characteristics in the aerodynamic control channel is given.

In this work, Krasnoshchekov’s model, which describes the behavior of people in a community under social and informational influences, is generalized to include the case of a system with a sophisticated structure of social interaction. In particular, the situation when an isolated group of people is formed who are not familiar with the rest of the community, which corresponds to a decomposable matrix of social interactions, is studied. The conditions for the solution of the system of equations describing the behavior of such a community to exist and be unique are considered. The problem of finding the relation between Krasnoshchekov’s and De Groot’s models is solved. The way this matrix of social interactions and the social independence of individuals affect the structure of the solution of this system, which describes in particularl how beliefs spread among people, is studied.