SYSTEMS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,712.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
2733
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Nde Technology Inc
2909 Oregon Ct #c-8, Torrance, CA, 90503
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JOHN R MASTANDREA
PRINCIPAL INVESTIGATOR
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
A CRITICAL NEED EXISTS TO RELIABLY AND IMMEDIATELY PINPOINT AND DETERMINE THE ONSET, ESTENT AND RATE OF DETERIORATION AND ACTUAL LEAKAGE IN THERMAL CONTROL SYSTEMS DURING LONG-TERM SPACE MISSIONS. THE NEW AND NOVEL ADVANCED ACOUSTIC LEAK/FAILURE DETECTION SYSTEM (ALFDS) PROVIDES A VIABLE SOLUTION. ALFDS, RECENTLY DEVELOPED FOR OIL AND GAS PIPELINE SYSTEMS, HAS SUCCESSFULLY PROVIDED AUTOMATIC, REMOTE, IMMEDIATE PINPOINTING OF THE ONSET OF LEAKAGE (CRITICAL FLAWS, ETC.), AND ACTUAL MINUTE LEAKAGE IN A VARIETY OF FLUID SYSTEMS (PIPING, HOSES, ETC.) SIMILAR TO THOSE USED IN SPACECRAFT. THIS PASSIVE/ACTIVE ACOUSTIC FAILURE PREVENTION SYSTEM IS BASED ON RECENT RESEARCH. WORKIN PASSIVE ACOUSTICS REVEALED THAT IMPENDING FAILURE AND ACTUAL LEAKAGE IN FLUID SYSTEMS NORMALLY HAVE HIGH FREQUENCY, CONTINUOUS AND/OR REPETITIOUS ACOUSTIC SIGNATURESTHAT CAN BE DISCRIMINATED FROM CONSIDERABLE BACKGROUND NOISEUSING ADVANCED SIGNAL ENHANCEMENT TECHNIQUES. THESE ACOUSTIC SIGNALS PROVIDE EARLY ALERT OF IMPENDING FAILURE AND ACTUAL LEAKAGE. ACTIVE ACOUSTICS CAN IMMEDIATELY IDENTIFY SIGNIFICANT STRUCTURAL DEFECTS, CHANGES, AND EVEN LOST COMPONENTS. PHASE I PROVIDES IN-DEPTH THEORETICAL ANALYSIS, PROTOTYPE SYSTEM DESIGN AND FABRICATION, AND LABORATORY TESTS. A FINALIZED COMPUTERIZED SYSTEM FOR CONTINUOUS, REAL-TIME MONITORING WILL BE DEVELOPED AND DEMONSTRATED IN PHASE II FOR ACTUAL SPACECRAFT THERMAL CONTROL SYSTEMS.

* information listed above is at the time of submission.

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