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stage mass ratio

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  • mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …   Universalium

  • ratio — An expression of the relation of one quantity to another ( e.g., of a proportion or rate). SEE ALSO: index (2), quotient. [L. r. (ration ) a reckoning, reason, fr. reor, pp. ratus, to reckon, compute] absolute terminal innervation r. the number… …   Medical dictionary

  • Single-stage-to-orbit — The VentureStar was a proposed SSTO spaceplane. A single stage to orbit (or SSTO) vehicle reaches orbit from the surface of a body without jettisoning hardware, expending only propellants and fluids. The term usually, but not exclusively, refers… …   Wikipedia

  • Propellant mass fraction — In aerospace engineering, the propellant mass fraction is a measure of a vehicle s performance, determined as the portion of the vehicle s mass which does not reach the destination. In a spacecraft, this is an orbit, while for aircraft it is… …   Wikipedia

  • Two-stage-to-orbit — A two stage to orbit (TSTO or DSTO Double/Dual Stage To Orbit) launch vehicle is a spacecraft in which two distinct stages provide propulsion consecutively in order to achieve orbital velocity. It is intermediate between a three stage to orbit… …   Wikipedia

  • Protein mass spectrometry — A mass spectrometer used for high throughput protein analysis. Protein mass spectrometry refers to the application of mass spectrometry to the study of proteins. Mass spectrometry is an important emerging method for the characterization of… …   Wikipedia

  • Zero-stage — Jet engines are often uprated by adding a zero stage to the front of a compressor. At a given core size, adding a stage to the front of the compressor not only increases the cycle overall pressure ratio, but increases the core mass flow. This is… …   Wikipedia

  • T-stage — T stages are the small compressor stages, featured on some turbofan engines, that are mounted on the LP shaft directly behind the fan.Although T stages usually only supercharge the core stream, some engines do feature a deliberately oversized IP… …   Wikipedia

  • 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

  • Sacrifice of the Mass — • The word Mass (missa) first established itself as the general designation for the Eucharistic Sacrifice in the West after the time of Pope Gregory the Great, the early Church having used the expression the breaking of bread (fractio panis) or… …   Catholic encyclopedia

  • Inductively coupled plasma mass spectrometry — ICP MS Instrument Acronym ICP MS Classification Mass spectrometry Analytes atomic and polyatomic species in plasma, with exceptions; usually inte …   Wikipedia

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