Given two points in a plane, each with a prescribed direction of motion in it, the question being asked is to find the shortest smooth path of bounded curvature that joins them. The classical 1957 result by Dubins gives a sufficient set of paths (each consisting of circular arcs and straight line segments) which always contains the shortest path. The latter is then found by explicitly computing...

SOUND AND VIBRATION/NOVEMBER 2002 A brief overview is given of transport airplane ground vibration testing (GVT) at Boeing Commercial Airplane Group. A GVT is a modal test conducted for the purpose of validating and improving a structural dynamic model of the airplane. A “small signal” model is quickly and conveniently identified from multi-input burst random excitation. Sine excitation is used...

We study the minimum time problem for a simplified model of ship towing long spread cables. Constraints are on curvature trajectory as well shape what represent cables here. This turns out to be same cart two trailers and rolling without sleeping plane in uniform translation. analyse Hamiltonian system describing extremal flow given by Pontrjagin maximum principle. detail equilibria prove that,...

This paper describes an analytic real-time emergency landing trajectory planner applicable in situations where an aircraft experiences severe damage or failure(s) that contract the feasible lateral plane flight envelope. Solutions are constructed as sequences of spirals that follow a reference arc, extending a traditional Dubins path solver to handle cases in which an aircraft cannot fly straig...

The radiations produced by airplane fling in clouds were measured by using the New Mexico Tech Lightning Mapping Array (LMA) system during STEPS in 2000. The results indicated that the source powers of airplane radiations follow an approximate Pdistribution. This is a kind of radiation produced by a discharge. The maximum powers vary from minimum locatable values of about 1W typically up to 10k...

The paper is focused on practical application of Cambridge Correlator. The goal is to propose a traffic signs inventory system by using excellent characteristics of correlator in the rapid optical correlation. The proposal of this inventory system includes obtaining of traffic signs to create the database either collecting the GPS coordinates. It is necessary to know the traffic signs position ...