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  • 1
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    Cleaning verification by air/water impingement (1995)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: This paper will discuss how the Kennedy Space Center intends to perform precision cleaning verification by Air/Water Impingement in lieu of chlorofluorocarbon-113 gravimetric nonvolatile residue analysis (NVR). Test results will be given that demonstrate the effectiveness of the Air/Water system. A brief discussion of the Total Carbon method via the use of a high temperature combustion analyzer will also be given. The necessary equipment for impingement will be shown along with other possible applications of this technology.
    Keywords: MECHANICAL ENGINEERING
    Type: NASA. Marshall Space Flight Center, Aerospace Environmental Technology Conference; p 583-591
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Balanced Rotating Spray Tank and Pipe Cleaning and Cleanliness Verification System (1998)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A system for cleaning and verifying the cleanliness of the interior surfaces of hollow items, such as small bottles, tanks, pipes and tubes, employs a rotating spray head for supplying a gas-liquid cleaning mixture to the item's surface at a supersonic velocity. The spray head incorporates a plurality of nozzles having diverging cross sections so that the incoming gas-liquid mixture is first converged within the spray head and then diverged through the nozzles, thereby accelerating the mixture to a supersonic velocity. In the preferred embodiment, three nozzles are employed; one forwardly facing nozzle at the end of the spray head and two oppositely facing angled nozzles exiting on opposite sides of the spray head which balance each other, and therefore impart no net side load on the spray head. A drive mechanism is provided to rotate the spray head and at the same time move the head back and forth within the item to be cleaned. The drive mechanism acts on a long metal tube to which the spray head is fixed, and thus no moving parts are exposed to the interior surfaces of the items to be cleaned, thereby reducing the risk of contamination.
    Keywords: Engineering (General)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Supersonic-Spray Cleaner (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Spraying system for cleaning mechanical components uses less liquid and operates at pressures significantly lower. Liquid currently used is water. Designed to replace chlorofluorocarbon (CFC) solvent-based cleaning and cleanliness verification methods. Consists of spray head containing supersonic converging/diverging nozzles, source of gas at regulated pressure, pressurized liquid tank, and various hoses, fittings, valves, and gauges. Parameters of nozzles set so any of large variety of liquids and gases combined in desired ratio and rate of flow. Size and number of nozzles varied so system built in configurations ranging from small hand-held spray heads to large multinozzle cleaners. Also used to verify part adequately cleaned. Runoff liquid from spray directed at part collected. Liquid analyzed for presence of contaminants, and part recleaned if necessary.
    Keywords: MACHINERY
    Type: KSC-11641 , NASA Tech Briefs (ISSN 0145-319X); 19; 2; P. 75
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Balanced-Rotating-Spray Tank-And-Pipe-Cleaning System (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Spray head translates and rotates to clean entire inner surface of tank or pipe. Cleansing effected by three laterally balanced gas/liquid jets from spray head that rotates about longitudinal axis. Uses much less liquid. Cleaning process in system relies on mechanical action of jets instead of contaminant dissolution. Eliminates very difficult machining needed to make multiple converging/diverging nozzles within one spray head. Makes nozzle much smaller. Basic two-phase-flow, supersonic-nozzle design applied to other spray systems for interior or exterior cleaning.
    Keywords: MACHINERY
    Type: KSC-11694 , NASA Tech Briefs (ISSN 0145-319X); 19; 12; P. 78
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Supersonic gas-liquid cleaning system (1994)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: A system to perform cleaning and cleanliness verification is being developed to replace solvent flush methods using CFC 113 for fluid system components. The system is designed for two purposes: internal and external cleaning and verification. External cleaning is performed with the nozzle mounted at the end of a wand similar to a conventional pressure washer. Internal cleaning is performed with a variety of fixtures designed for specific applications. Internal cleaning includes tubes, pipes, flex hoses, and active fluid components such as valves and regulators. The system uses gas-liquid supersonic nozzles to generate high impingement velocities at the surface of the object to be cleaned. Compressed air or any inert gas may be used to provide the conveying medium for the liquid. The converging-diverging nozzles accelerate the gas-liquid mixture to supersonic velocities. The liquid being accelerated may be any solvent including water. This system may be used commercially to replace CFC and other solvent cleaning methods widely used to remove dust, dirt, flux, and lubricants. In addition, cleanliness verification can be performed without the solvents which are typically involved. This paper will present the technical details of the system, the results achieved during testing at KSC, and future applications for this system.
    Keywords: ENGINEERING (GENERAL)
    Type: NASA, Washington, Technology 2003: The Fourth National Technology Transfer Conference and Exposition, Volume 1; p 232-240
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Facility Systems, Ground Support Systems, and Ground Support Equipment General Design Requirements (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: This standard establishes requirements and guidance for design and fabrication of ground systems (GS) that includes: ground support equipment (GSE), ground support systems (GSS), and facility ground support systems (F GSS) to provide uniform methods and processes for design and development of robust, safe, reliable, maintainable, supportable, and cost-effective GS in support of space flight and institutional programs and projects.
    Keywords: Engineering (General)
    Type: NASA/TP-2014-218361 , KSC-DE-512-SM , KSC-E-DAA-TN16183
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Facility Systems, Ground Support Systems, and Ground Support Equipment General Design Requirements (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: KSC-DE-512-SM establishes overall requirements and best design practices to be used at the John F. Kennedy Space Center (KSC) for the development of ground systems (GS) in support of operations at launch, landing, and retrieval sites. These requirements apply to the design and development of hardware and software for ground support equipment (GSE), ground support systems (GSS), and facility ground support systems (F-GSS) used to support the KSC mission for transportation, receiving, handling, assembly, test, checkout, servicing, and launch of space vehicles and payloads and selected flight hardware items for retrieval. This standards manual supplements NASA-STD-5005 by including KSC-site-specific and local environment requirements. These requirements and practices are optional for equipment used at manufacturing, development, and test sites.
    Keywords: Engineering (General)
    Type: NASA/TP-2014-218361, Rev. 1 , KSC-DE-512-SM , KSC-E-DAA-TN19376
    Format: application/pdf
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