Rolls-royce Corporation

Rolls-royce Deutschland Ltd & Co. Kg

Kasten Chase Applied Research Limited

Chris Hall

Donald Harold Ferguson

John Dodds

Thomas Giersch

Alexandru Oprea

Keith Juson

Bernhard Mueck

Dimitrie Octavian Paun

Maciek Opoka

Christopher Hook

Maciej Opoka

A rotor of a turbomachine includes a plurality of rotor blades, which each have a blade leading edge and a tip, the rotor blades forming a first group and at least one further group of rotor blades of different construction. It is provided that the rotor blades of the first group are nominal rotor blades, the rotor blades of the at least one further group each have a material cutout in the transition from the blade leading edge to the tip, the material cutout not being present in the case of the rotor blades of the first group, and the rotor blades of the first group and of the at least one further group form a non-periodic sequence in a circumferential direction.

Rotor with subset of blades having a cutout leading edge

The present invention relates to an electronic identification system comprising one or more transponders which store identification and other information in memory, and readers, which capture information from the transponders and write new information thereto, and in which communications between transponders and readers are accomplished using radio frequency signals. The present invention has attributes which make it particularly useful in automatic fare collection systems, where transponders, typically in the form of thin cards and used as pre-paid tickets, are carried by fare paying passengers to replace printed tickets and eliminate exchange of cash. Specifically the system achieves simultaneous identification of numerous transponders by one reader, permits a reader to selectively program any of many transponders under its control, exhibits fast transaction speed to maximize passenger throughput, and achieves exceptional data storage integrity.

Passive transponder

Growing community of inventors

London, United Kingdom

Chris Hall