Abstract

A pellet for deployment in a composite armor panel has a first end face at a projectile-receiving end thereof and has a second end face at an end that is opposite the projectile-receiving end. The pellet has an outer surface extending between the first end face and the second end face, the outer surface comprising a plurality of non-contiguous arc-segment surface sections that are arranged in an alternating fashion with a plurality of planar surface sections. In a cross-section that is taken in a plane, each one of the arc-segment surface sections lies along the circumference of a circle of diameter D and each one of the plurality of planar surface sections defines a chord within the circle of diameter D.

IPC Classes  ?

• F41H 5/02 - Plate construction
• F41H 5/04 - Plate construction composed of more than one layer

Abstract

A system for aligning an aircraft-engaging end of a passenger boarding bridge with a doorway of an aircraft includes a passive radio frequency identification (RFID) tag for being disposed at a known location aboard the aircraft, relative to the doorway thereof. The passive RFID tag includes a tag antenna and an integrated circuit for encoding data relating to the passive RFID tag. An antenna including a plurality of antenna elements is disposed proximate the aircraft-engaging end of the passenger boarding bridge. The antenna emits radio frequency waves and receives from the passive RFID tag a wireless data communication signal including the encoded data. A processor is provided for identifying the encoded data within the wireless data communication signal, for determining an angle of arrival of the encoded data based on differences in signal received at each of the plurality of antenna elements and for determining an intensity of the signal including the encoded data. A bridge controller in communication with the processor determines a movement of the passenger boarding bridge toward the doorway of the aircraft, based on the determined angle of arrival of the encoded data and the intensity of the signal including the encoded data.

IPC Classes  ?

• B64F 1/305 - Bridges extending between terminal building and aircraft, e.g. telescopic, vertically adjustable
• G01S 13/75 - Systems using reradiation of radio waves, e.g. secondary radar systemsAnalogous systems using transponders powered from received waves, e.g. using passive transponders
• G01S 13/79 - Systems using random coded signals or random pulse repetition frequencies
• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
• G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation