Aviation dictionary. 2014.
high-bypass turbofan — A turbofan engine with a bypass ratio of 4:1 or higher (i.e., four or more times as much air flows across the fan as across the core engine) … Aviation dictionary
very high bypass — An engine with a bypass ratio in the region of 15:1. These engines may be used for reverse thrust. This type of configuration is known as cold reverse thrust, as opposed to hot reverse thrust, which is provided by hot exhaust gases … Aviation dictionary
Bypass ratio — The term bypass ratio (BPR) relates to the design of turbofan engines, commonly used in aviation. It is defined as the ratio between the mass flow rate of air drawn in by the fan but bypassing the engine core to the mass flow rate passing through … Wikipedia
Bypass duct — A bypass duct is an annular passage that allows some of a turbofan s airflow to bypass the engine core, or gas generator. If the turbofan is unmixed, the bypass duct will terminate at the bypass nozzle. In mixed turbofans, the bypass duct leads… … Wikipedia
High voltage switchgear — is any switchgear used to connect or disconnect a part of a high voltage power system. These switchgear are essential elements for the protection and safe operation, without interruption, of a high voltage power system. This type of equipment is… … Wikipedia
High availability — is a system design approach and associated service implementation that ensures a prearranged level of operational performance will be met during a contractual measurement period. Users want their systems, for example wrist watches, hospitals,… … Wikipedia
High-temperature electrolysis — (also HTE or steam electrolysis) is a method currently being investigated for the production of hydrogen from water with oxygen as a by product.EfficiencyHigh temperature electrolysis is more efficient economically than traditional room… … Wikipedia
High Plateau line — Overview Status Under construction Operation Operator(s) SNTF Technical Track gauge … Wikipedia
Bypass (surgical) — In medicine, a bypass generally means an alternate or additional route for blood flow, which is created in bypass surgery, e.g. coronary artery bypass surgery by moving blood vessels or implanting synthetic tubing. Vessels frequently used for the … Wikipedia
High-quality dual carriageway — A High quality dual carriageway (HQDC) is a category of road in the Republic of Ireland. It is an all purpose dual carriageway road type of motorway standard, but without the route section being classified as motorway or having motorway… … Wikipedia
