Accession Number : ADD011432

Title :   Flow Measurement Device.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Chandler,T C

Report Date : 17 Oct 1984

Pagination or Media Count : 18

Abstract : A device is described for measuring fuel flow to a power plant such as a turbo fan engine with a very high degree of accuracy, for example, + or - 0.5%. A tubular flow loop having quick disconnect fittings for detachably connecting the loop between the aircraft fuel system outlet and the engine fuel inlet is disclosed. Two specially calibrated mass flow transmitters are arranged in series, each preceded by a straight section of piping having a preferred given length to diameter ratio. Preceding each of the two straight pipe sections is a honeycomb flow straightener and three in-series perforated plates for removing any effects of upstream flow characteristics from the transmitters.

Descriptors :   *Patent applications, *Flowmeters, *Mass flow, *Fuels, Pipes, Turbofan engines, Measurement, Transmitters, Loops, Disconnect fittings, Tubular structures, Engines, Ratios, Inlets, Length, Calibration, Fuels, Diameters, Flow, Accuracy

Subject Categories : Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE