IMPROVED AIR-CHECK VALVE FOR SECOND-STAGE MOTOR OF POLARIS A-1 MISSILE
Abstract
Id n ifiers: Guided missile Polaris. The air-c eck valve made of neopr ne which is presently being i stalled in a nozzle of the econd-st ge motor of Polaris A-1 missiles has marginal durability. This valve may be ruptured by rapi pas age of ir uring the pre-launch pressuriz tion of the seco d- ag mo or. HE Rubber Laboratory h s d veloped a natural rubber stock for use in these valves in lieu of neoprene. A VALVE MADE FROM THIS STOCK WITHSTANDS RAPI PASSAG OF AIR APPROXIMATELY * TIMES AS LONG AS THE NEOPRENE VALVE. T HE NATURAL RUBBER VALVE S ALS SATISFACTORILY AGAI ST BACK FLOW, AND ADHERES WELL TO A GRAPHI E SURFACE USING EPOXY RESI AS TH BONDING AGENT. The durability of t e natural rubber valve is not r duc d by accelerated aging. The natural rubber valve is suitable only for installation in the noz le before assembly of the missile. It is too stiff for practical installation in an assembl d missile. Specification requirements based on the prop rti s of t e natural rubber check valve have been prepared. (Author AD-2774 1 1 ++ An improved ir-check valve for the eco dstag motor of t Polaris -1 mis ile.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 25, 1962
- Accession Number
- AD0277421
Entities
People
- A.e. Barrett
- J.m. Holloway