THERE IS NEED FOR A TWO-PHASE FLOWMETER TO MEASURE MASS FLOWRATE OF EACH PHASE OF LIQUID/VAPOR FLOW IN CONDUITS FOR LAUNCH PROPELLANT MANAGEMENT.

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 2746
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1985
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
505 8th Ave, New York, NY, 10018
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 A J SIPIN
 PRINCIPAL INVESTIGATOR
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THERE IS NEED FOR A TWO-PHASE FLOWMETER TO MEASURE MASS FLOWRATE OF EACH PHASE OF LIQUID/VAPOR FLOW IN CONDUITS FOR LAUNCH PROPELLANT MANAGEMENT. A GREAT VARIETY AND COMBINATIONS OF FLOW MEASURING DEVICES AND METHODS HAVE BEEN USED FOR TWO-PHASE FLOW, INCLUDING VIBRATORY TUBULAR TRUE MASS FLOWMETERS. SUCH FLOWMETERS AREDEFICIENT FOR MEASURING HORIZONTALLY STRATIFIED TWO-PHASE FLOW, AND EXISTING CONDUIT SHAPES PROVIDE VAPOR TRAPS WHICH AFFECT THE CALIBRATION IN ANY ORIENTATION. THE PROPOSED METER OVERCOMES THESE DRAWBACKS BY USING A VIBRATING CONDUIT WITH A VERTICAL COMPONENT OF FLUID VELOCITY AT EVERY POINT, WHICH IS ACHIEVED BY A HELICAL CONDUIT WITH A VERTICAL AXIS. DYNAMIC REACTIONS TO VIBRATION ARE SENSED AS A MEASURE OF TOTAL MASS FLOW RATE; THE FREQUENCY OF THE RESONANT VIBRATION IS SENSED AS A MEASURE OF MEAN FLUID DENSITY; AND PHASE DENSITIES ARE DETERMINED BY A PRESSURE MEASUREMENT. A PROCEDURE IS DESCRIBED FOR CALCULATING MASS FLOW RATES OF INDIVIDUAL PHASES WITHIN A USEFUL ENVELOPE OF OPERATING CONDITIONS.

* Information listed above is at the time of submission. *

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