3 edition of Actively controlled shaft seals for aerospace applications found in the catalog.
Actively controlled shaft seals for aerospace applications
by Georgia Institute of Technology, National Aeronautics and Space Administration, National Technical Information Service, distributor in Atlanta, Ga, [Washington, DC, Springfield, Va
Written in English
|Statement||principal investigator, Richard F. Salant.|
|Series||NASA contractor report -- NASA CR-198035.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
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This study experimentally investigates an actively controlled mechanical seal for aerospace applications. The seal of interest is a gas seal, which is considerably more compact than previous actively controlled mechanical seals that were developed for industrial : Richard F.
Salant. Get this from a library. Actively controlled shaft seals for aerospace applications: semiannual status report, July - December, [Richard F Salant; United.
Get this from a library. Actively controlled shaft seals for aerospace applications: summary of research, January 1, - Decem [Richard F Salant; United States. National Aeronautics and Space Administration.].
A controllable mechanical seal is one in which the thickness of the lubricating film separating the sealing surfaces is adjustable, and can be controlled by an electronic control system, based on information supplied by sensors that monitor the condition of the film.
This study experimentally investigates an actively controlled mechanical seal for aerospace applications. The seal of interest is a gas seal, which is considerably more compact than previous actively controlled mechanical seals that were developed for industrial use.
In a mechanical seal, the radial convergence of the seal interface has a primary effect on the film : Richard F. Salant. The thickness of the lubricating film is controlled by adjusting the coning of the carbon face.
This is accomplished by applying a voltage to a piezoelectric actuator to which the carbon face is bonded. The seal has been operated with a closed-loop control system that utilizes either the leakage rate or the seal face temperature as the feedback.
In a previous study (5), a controllable gas seal for aerospace applications was examined under steady state operating conditions. Results from experiments were compared with those obtained from a mathematical model.
During the steady state tests, the seal was operated with an open-loop control system. Elastomeric Products – Seals & Gaskets Custom engineered seals & gaskets that are designed specifically for your application. Seal Science, Inc. has always been able to provide its customers with the best possible solution at the most competitive price.
Precision Polymer Engineering (PPE) is a Nadcap accredited, AS Rev.C certified designer and manufacturer of high performance sealing solutions, providing O-rings, custom mouldings and other seal geometries to the entire aerospace supply chain.
Rexnord Industries manufactures aerospace seals including contacting face seals for applications with high pressures and high shaft speeds with moderate axial shaft movement. The non-contacting face seals feature a hydrodynamic design, while the circumferential seals/control gap seals are designed to allow a controlled flow.
This seal has nearly the same leakage control, but since it is a slipper seal, speeds of up to 15 m/s (49 ft/s) are acceptable and adhesion is eliminated. The grooves on the dynamic seal surface provide pockets where the hydraulic fluid can accumulate and lubricate the seal, therefore increasing seal Size: 3MB.
aerospace applications. The seal of interest is a gas seal, which is considerably more compact than previous actively controlled mechanical seals that were developed for industrial use.
In a mechanical seal, the radial convergence of the seal interface has a primary effect on the film thickness. Active control of the film thickness is established by controlling the radial convergence of the seal interface.
Aerospace Sealing Applications. The Aerospace industry is synonymous with Safety, Performance and Innovation. Both civilian and military sealing applications push the limit.
Industry trends such as increased fuel efficiency, lighter equipment, more extreme altitudes and temperature considerations all have significant sealing application impacts. eagle engineering aerospace korea co.,ltd. 4B 5L Chilseo Industrial Complex Chilseo-Myun, Haman-Gun, Gyeong-Nam, Korea EAGLE ENGINEERING AEROSPACE TAIWAN CO.,LTD.
Eaton offers the most diverse line of mechanical seals and sealing components, including pressure-balanced face seals, circumferential segmented seals, brush seals and welded metal bellows seals.
Each incorporates the optimum seal configuration, material and technology, including hydrodynamics; which can be applied to both face and. Shaft Seals for Dynamic Applications (Mechanical Engineering) 1st Edition by Les Horve (Author) out of 5 stars 3 ratings. ISBN ISBN Why is ISBN important.
ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book Cited by: Aerospace seals Our cutting edge sealing solutions are made using approved materials and meet the requirements of all types of applications in the aerospace and spacial environment.
The aerospace seals mainly include filled PTFE-based composite seals, particularly for rod seals, piston seals, wiper seals and guiding components. Seals for general industrial applications.
Seals for heavy industrial applications. Additional HDS design options ; Radial shaft seals with a low cross sectional height. Cassette seals. Design features. Wear sleeves. Track pin seals. Metal face seals. V-ring seals. Axial clamp seals. Sealing and spacing washers. Hydraulic seals.
General technical information. Manufacturer of standard and custom solid and sponge rubber seals for aircraft and aerospace industries. Materials used include EPDM, neoprene, SBR, PVC and natural rubber. Rubber seals are resistant to abrasion, ozone, hydrocarbon solvents, alkalis, acids, weather, water, steam and tensile strength.
The mechanical seal technology is a sum of mechanical engineering and physical property technology due to the above-mentioned functions and applications. More specifically, the core of the mechanical seal technology is the tribology (friction, wear and lubrication) technology used to control the surfaces where the stationary and rotary rings.
The advancement of machinery design will depend on these re- lationships; the firstto be successful will lead the next phase in seal evolution. ’s ’s ’s ’s ’s ’s. Radial Shaft Seal Evolution The first known shaft seals were leather straps used to retain animal fat on the end of a .BASIC GASKET APPLICATION GUIDE & MATERIAL SELECTION Application / Function Because gaskets are generally low cost and appear to be simple, the criticality of their role in a device is often overlooked.
They usually don’t garner much attention until there is a problem with an application or if there are high maintenance cost to service the Size: KB.DeltaMod™ Rod Seal assembly: Has a unique geometry to prevent rolling, spiraling and extrusion of the elastomer seal element.
The reduced footprint and the Poly Mod ® or Ultra Mod ™ elastomer provide for both low friction and long wear life while maintaining excellent leakage control. These seals have also been used in some rotary applications.