Name: High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles
SKU: 59701086
Price: 936.00 TWD
Availability: InStock
Author: Dunlap, Patrick H. ; Nasa Technical Reports Server (Ntrs) ; Et Al
ISBN: 9781287268840

portada High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles

High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles

Type

Physical Book

Author

Nasa Technical Reports Server (Ntrs)

Patrick H. Dunlap

Publisher

Bibliogov

Language

English

Pages

Format

Paperback

Dimensions

24.6x18.9x0.2 cm

Weight

0.07 kg.

ISBN13

9781287268840

Synopsis "High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles"

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 2000 to 2500 F. Current seal designs do not meet the demanding requirements for future engines, so NASA s Glenn Research Center is developing advanced seals and preloading devices to overcome these shortfalls. An advanced ceramic wafer seal design and two types of seal preloading devices were evaluated in a series of compression, scrub, and flow tests. Silicon nitride wafer seals survived 2000 in. 1000 cycles) of scrubbing at 1600 F against an Inconel 625 rub surface with no chips or signs of damage. Flow rates measured for the wafers before and after scrubbing were almost identical and were up to 32 times lower than those recorded for the best braided rope seal flow blockers. Canted coil springs and silicon nitride compression springs showed promise conceptually as potential seal preloading devices to help maintain seal resiliency. A finite element model of the canted coil spring revealed that it should be possible to produce a spring out of high temperature materials for applications at 2000+ F.

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High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles - Dunlap, Patrick H. ; Nasa Technical Reports Server (Ntrs) ; Et Al

Synopsis "High Temperature Propulsion System Structural Seals for Future Space Launch Vehicles"

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