Managing operations of the aircraft approach process and analyzing runway landing capacity, utilization and related risks require detailed insight into the stochastic characteristics of the process. These characteristics can be represented by probability distributions. The focus of this study is analyzing landings on a runway operating independent of other runways making it as a single runway. ...

The characteristics performance of the small quadcopter was measured in a wind tunnel. effect propellers on lift and drag frame has been found. descent stage investigated numerically by RANS approximation. calculations allowed determining interference between from propeller with element. A significant vortex ring state

Bubble-powered acoustic microsystems span a plethora of applications that range from lab-on-chip diagnostic platforms to targeted interventions as microrobots. Numerous studies strategize this bubble-powered mechanism generate autonomous self-propulsion microrobots in response high frequency sound waves. Herein, we present two micro-propeller designs which contain an axis-symmetric distribution...

This paper presents an improved modelling method for a water jet‐based multi‐propeller propulsion system. In our previous work, the modelling experiments were only carried out in 2D planes, whose experimental results had poor agreement when we wanted to control the propulsive forces in 3D space directly. This research extends the 2D modelling described in the authors’ previo...

In this paper we shed light on the fundamental actuation capabilities of multi-rotors, such as force-moment decoupling and ability to robustly fly still in place after the loss of propellers. These two actuation properties are formalized through the definition of some necessary algebraic conditions on the control force and control moment input matrices of generically tilted multi-rotors. Standa...

Powerboats in operation represent a system consisting of a number of complex components such as: surface propellers, aerodynamics and hydrodynamics; which interact with each other and with the wind and water surface conditions. By measuring the behaviour of the powerboat it is possible to create a mathematical model using system identification methods. A neural network model has been generated ...