초록 ▼

An apparatus for providing buoyancy to a towed marine divertor and for reducing drag acting on the divertor as the equipment is towed through water. A float attached to the divertor has a curved leading end oriented toward the tow direction to reduce water drag acting against the float. The float ca

An apparatus for providing buoyancy to a towed marine divertor and for reducing drag acting on the divertor as the equipment is towed through water. A float attached to the divertor has a curved leading end oriented toward the tow direction to reduce water drag acting against the float. The float can be integrated within the divertor or can be attached with wire rope or chains to lower the divertor within the water. The trailing end of the float can be tapered, and vane foils can be attached to the float outboard side.

대표청구항 ▼

An apparatus for providing buoyancy to a towed marine divertor and for reducing drag acting on the divertor as the equipment is towed through water. A float attached to the divertor has a curved leading end oriented toward the tow direction to reduce water drag acting against the float. The float ca

An apparatus for providing buoyancy to a towed marine divertor and for reducing drag acting on the divertor as the equipment is towed through water. A float attached to the divertor has a curved leading end oriented toward the tow direction to reduce water drag acting against the float. The float can be integrated within the divertor or can be attached with wire rope or chains to lower the divertor within the water. The trailing end of the float can be tapered, and vane foils can be attached to the float outboard side. r. 35. The laser system of claim 1, wherein the laser system comprises a stereolithography system. 36. A method for producing a laser system, comprising: providing a mounting fixture and a chamber adapted for holding the mounting fixture; cleaning the mounting fixture and the chamber; cleaning at least a surface of a frequency conversion crystal to be protected by the chamber; assembling the frequency conversion crystal, the mounting fixture and the chamber to define an assembly and sealing the chamber to enclose the surface of the frequency conversion crystal to be protected by the chamber, providing the chamber with heating elements used for adjusting an operating temperature of the frequency conversion crystal, where all the heating elements are provided outside of the chamber and where the chamber is stable to baking at 300° C.; providing a laser outputting light of a fundamental wavelength; and aligning the frequency conversion crystal with respect to an optical path of the laser. 37. The method of claim 36, further comprising the step of adjusting a temperature of the frequency conversion crystal to an operation temperature prior to aligning the frequency conversion crystal. 38. The method of claim 36, further comprising filling the chamber with a gas consisting essentially of large, slow diffusing molecules. 39. The method of claim 38, wherein the gas is sulfur hexaflouride. 40. A method for producing a laser system, comprising: providing a mounting fixture and a chamber adapted for holding the mounting fixture; cleaning the mounting fixture and the chamber; cleaning at least a surface of a frequency conversion crystal to be protected by the chamber; assembling the frequency conversion crystal, the mounting fixture and the chamber to define an assembly and sealing the chamber to enclose the surface of the frequency conversion crystal to be protected by the chamber, providing the chamber with heating elements used for adjusting an operating temperature of the frequency conversion crystal, where all the heating elements are provided outside of the chamber and where the chamber is stable to baking at 300° C.; and adjusting a temperature of the frequency conversion crystal to identify an operating temperature. 41. The method of claim 40, wherein the act of cleaning the mounting fixture and the chamber is performed before the act of assembling. 42. The method of claim 40, wherein the act of cleaning the mounting fixture and the chamber is performed after the act of assembling. 43. The method of claim 40, whe