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
Amount:
$50,000.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
2746
Agency Tracking Number:
2746
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
505 8th Ave, New York, NY, 10018
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
A J SIPIN
PRINCIPAL INVESTIGATOR
() -
Business Contact:
() -
Research Institute:
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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