2 edition of A Hot dynamic seal rig for measuring hypersonic engine seal durability and flow performance found in the catalog.
A Hot dynamic seal rig for measuring hypersonic engine seal durability and flow performance
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va
Written in English
|Statement||Jeffrey H. Miller ... [et al.].|
|Series||NASA technical memorandum -- 106294.|
|Contributions||Miller, Jeffrey H., United States. National Aeronautics and Space Administration.|
|The Physical Object|
This book is a self-contained text for those students and readers interested in learning hypersonic flow and high-temperature gas dynamics. It assumes no prior familiarity with either subject on the part of the reader. If you have never studied hypersonic and/or high-temperature gas dynamics before, and if you have never worked extensively in the area, then this book is for you.4/5(1). W.H. Mason Hypersonic Aerodynamics 7/31/16 Figure Sketch defining the hypersonic directional stability problem Now, for a high-speed flow, we will assume that the vertical tail is a two-dimensional surface with a constant pressure on each side, so that. We will consider two cases, one supersonic, the other Size: 1MB.
the enormous drag that prevails in hypersonic flight. The design of hypersonic inlet for scramjet-engine is Figure pivotal to ensure stable combustion . As the hypersonic flight exceeds Mach 5, the residence time of the air inside the combustion chamber drops to a very low value which engenders the difficulty of. Fig. 1 is a schematic representation of the combined seal structure composed of a rubber O-ring and a wedge-ring. This seal is installed in the groove of the cover, and the O-ring is compressed with the cylinder in the radial direction. The function of the wedge-ring is to avoid the O-ring from extruding through a gap between the cylinder and the by: 9.
This book is the second edition of a successful, self-contained text for those students and readers interested in learning hypersonic flow and high-temperature gas dynamics. Like the first edition, it assumes no prior familiarity with either subject on the part of the : $ Hypersonic and High Temperature Gas Dynamics by John D. Anderson to the AIAA Education Series. I have known John Anderson for more years than either he or I are comfortable recalling, and I have always found him to be extre-mely articulate and insightful. The original edition published by McGraw-Hill in.
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A HOT DYNAMIC SEAL RIG FOR MEASURING HYPERSONIC ENGINE SEAL DURABILITY AND FLOW PERFORMANCE Jeffrey H. Miller* Sverdrup Technology, Inc. Lewis Research Center Group Brook Park, Ohio Bruce M. Steinetz* National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio Paul J.
Sirocky* Sverdrup. Get this from a library. A Hot dynamic seal rig for measuring hypersonic engine seal durability and flow performance. [Jeffrey H Miller; United States. National Aeronautics and Space Administration.;]. Seal Technology for Hypersonic Vehicle and Propulsion: An Overview Abstract Hypersonic vehicles and propulsion systems pose an extraordinary challenge for structures and materials.
Airframes and engines require lightweight, high-temperature materials and structural configurations that can withstand the extreme environment of hypersonic flight. Stein Seal ® Company developed dynamic test rig capable of simulating extreme engine attitudes at any angle ranging from horizontal up to 90⁰ vertical in order to verify seal performance.
In addition to matching gas turbine engine bearing sump pressures and temperatures, the rig shaft rotates at speeds up to 20, rpm and can be maintained. In other words, this book is designed for two roles: 1) as an effective classroom text that can be used with ease by the instructor, and understood with ease by the student; and 2) as a viable, professional working tool for engineers, scientists, and managers who have any contact in their jobs with hypersonic and/or high-temperature by: A new type of engine seal is being developed to meet the needs of advanced hypersonic engines.
A seal braided of emerging high temperature ceramic fibers comprised of. Durable, flexible sliding seals are required in advanced hypersonic engines to seal the perimeters of movable engine ramps for efficient, safe operation in high heat flux environments at temperatures of to F.
Current seal designs do not meet the demanding requirements for future engines, so NASA's Glenn Research Center is developing Format: Paperback. A HOT DYNAMIC SEAL RIG FOR MEASURING HYPERSONIC ENGINE SEAL DURABILITY AND FLOW PERFORMANCE.
JEFFREY MILLER, BRUCE ACOUSTICS DUE TO FLOW-STRUCTURAL INTERACTION AND ITS TRANSMISSION THROUGH A DOUBLE-PANEL IN HIGH-SPEED CRUISING FLIGHT A Static and Dynamic Aeroelastic Loads and Sensitivity. XA Waverider hypersonic flight failed the first test just because the thermal seal between the rear of the fuel-cooled engine and its vehicle mounted nozzle was not as tight as it.
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There are three main reasons to conduct dynamic seal testing when looking to validate a part’s performance prior to distribution. Testing can accurately simulate the extremes of operating conditions, it can improve confidence in a product and testing provides a predictable service life.
Improved test control. Seal Dynamics (A HEICO Company) founded inwith its corporate headquarters based in Hauppauge, NY is a world leader in technical sales and the distribution of aerospace components. Our unique marketing and technical sales approach is the most effective way to assist our customers in selecting products that reduce cost of ownership.
Check Valves, Relief Valves and Fluid Controls: Hydraulic, Fuel, Pneumatic, Waste Water, Actuation Systems. View or Download Line Card. Cox & Company – (FSCM) Temperature Controls, Ice Protection Systems and Indicators.
View or Download Line Card. Donaldson Filtration Solutions – AFS, Le Bozec and Western Filter (FSCMF,). The Active Hypersonic Engine can be positioned on all sides or on only one side of a vehicle.
Example given, like a single sided (linear) aerospike engine, our concept can be realized as an engine with Single Expansion Ramp Nozzle (SERN) only. The Active Hypersonic Engine can be realized as an internal or external combustion engine. In order to study the performance of the dynamic seal and static seal of D-ring, the FEM models of D-ring and O-ring were built, and the process of reciprocating seal of the D-ring was simulated.
In addition, the effects of pre-compression, medium pressure, friction coefficient, and rubber hardness on sealing performance were discussed. The friction coefficients Cited by: 6. The rotary lip seal is the most widely used type of dynamic seal. It is a relatively inexpensive, mass-produced product, primarily used for low pressure applications.
It is extensively used in the automotive industry to seal crankshafts, transmissions, wheel hubs, axle pinions, and power steering Size: 2MB. Converting from Carbon seal to Dynamic seal Discussion in 'Turbo Tech Questions' started by I had to have a carbon seal put in my new turbo and the guy that did the work said he has to mill the plate to install the new carbon seal.
I get the tubo back and install it and low and behold I pump about a half a pint of oil through my engine. seal test, the effect of rotation on seal performance will be determined when the dynamic test rig becomes available for use.
A series of experiments was performed to test the effects of leakage as a function of bump height and different radial clearances. Larger bumps allow the seal to accommodate greater radial excursion by the rotor. Seal Performance Improvement There are times when a seal is working, but you would like it to achieve more.
Whether you need your seal to withstand higher temperatures, operate at higher pressures, last longer under changing conditions, or to meet different criteria, American High Performance Seals offers Seal Performance Improvement services. When a seal fails prematurely or if you would like to extend the seal life, it is time to request a Seal Failure Analysis by an American High Performance Seals engineer.
Our highly skilled engineers can analyze seal failures using our extensive knowledge gained. At lower speeds (below Mach 5-ish), stagnation temperature (TAT) is a very accurate proxy for skin at mid/high hypersonic speeds (especially in the thin upper atmosphere where mass flow is low), thermal radiation bleeds off a significant amount of heat, especially as temperatures climb into the thousands of Kelvin.hypersonic vehicles such as the Space Shuttle, Boeing X, and NASA X (Figure 1) have achieved hypersonic flight, but not without failures under their belt.
Hypersonic vehicle design is a complicated and ongoing process. As a conventional rule of thumb, hypersonic flow can be defined as flow above Mach 5.
This book is the second edition of a successful, self-contained text for those students and readers interested in learning hypersonic flow and high-temperature gas dynamics.
Like the first edition, it assumes no prior familiarity with either subject on the part of the reader/5(36).