초록 ▼

An improved pneumatic valve and a missile with an improved thrust directional valve. In one embodiment, a refractory material lining for a pneumatic valve enables better valve operation and better valve performance. A thin-wall cylindrical sleeve of rhenium or other suitable refractory metal is loca

An improved pneumatic valve and a missile with an improved thrust directional valve. In one embodiment, a refractory material lining for a pneumatic valve enables better valve operation and better valve performance. A thin-wall cylindrical sleeve of rhenium or other suitable refractory metal is located inside a cylinder. A valve piston may then travel within the refractory sleeve with greater reliability and better operation. The refractory sleeve cylinder lining can be subject to high temperatures at a rapid rate and remain operational. Under such a hostile environmental, including corrosive/erosive environments created by the passage of hot propellant gasses, the refractory cylinder sleeve has a more reliable operational life and is lighter in weight than conventional valves made entirely of refractory metals.

대표청구항 ▼

1. A valve for directing propellant thrust, comprising:a refractory cylinder wall lining defining a cylinder symmetrically disposed about a longitudinal axis; and a piston disposed axially relative to the longitudinal axis and configured to slidably move within the cylinder along the longitudinal ax

1. A valve for directing propellant thrust, comprising:a refractory cylinder wall lining defining a cylinder symmetrically disposed about a longitudinal axis; and a piston disposed axially relative to the longitudinal axis and configured to slidably move within the cylinder along the longitudinal axis. 2. A valve for directing propellant thrust as set forth in claim 1, wherein the refractory cylinder wall lining is made from metal of the group consisting of rhenium, tungsten, niobium, tantalum, molybdenum, and alloys thereof.3. A valve for directing propellant thrust as set forth in claim 1, further comprising:a housing defining a cylindrical bore; and the lining circumscribing an interior of the bore; whereby the housing is protected by the lining. 4. A valve for directing propellant thrust as set forth in claim 3, further comprising:the lining being fit by interference in the bore. 5. A valve for directing propellant thrust as set forth in claim 3, further comprising:the lining being fit by adhesion in the bore. 6. A valve for directing propellant thrust, comprising:a housing having a cylindrical bore formed therein; a refractory cylinder wall lining circumscribing an interior of the bore such that the housing is protected by the lining, the refractory lining defining a cylinder symmetrically disposed about a longitudinal axis; and a piston disposed axially relative to the longitudinal axis and configured to slidably move within the cylinder along the longitudinal axis. 7. A valve for directing propellant thrust as set forth in claim 6, further comprising:the refractory cylinder wall lining being fit by into the bore by means selected from the group consisting of interference fit, shrink fit, and adhesion. 8. A valve for directing propellant thrust as set forth in claim 6, wherein the refractory cylinder wall lining is made from metal of the group consisting of rhenium, tungsten, niobium, tantalum, molybdenum, and alloys thereof.9. A missile guided by diverted thrust gasses, comprising:a divert valve having a refractory cylinder wall lining, the refractory cylinder wall lining defining a cylinder symmetrically disposed about a longitudinal axis; and a piston disposed axially relative to the longitudinal axis and configured to slidably move within the cylinder along the longitudinal axis. 10. A missile guided by diverted thrust gasses as set forth in claim 9, wherein the divert valve further comprises:a housing having a cylindrical bore formed therein; and a rhenium cylinder wall lining circumscribing an interior of the bore such that the housing is protected by the lining, the rhenium lining defining the cylinder symmetrically disposed about a longitudinal axis.