摘要:
Method and Apparatus for efficiently applying coating systems to a surface that can survive the thermal gradient that is encountered in high temperature, high heat flux environments such as a rocket engine or like using vapor or cluster deposition process such as a directed vapor deposition (DVD) approach. Method and Apparatus provides electron or other energetic beam technique to evaporate and deposit compositionally and morphologically controlled bond coats at high rate while providing a highly strain tolerant thermal barrier coating that has an improved porosity morphology between columnar grains.
摘要:
A method for producing a brazed joint having at least one of a metal/ceramic joint and a ceramic/ceramic joint. The method includes forming bores in at least one ceramic surface to be brazed, and the bores have an average diameter of greater than 550 μm. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
摘要:
The present invention is related to an ablative baffle for a liquid rocket engine thrust chamber that comprises: a hub member having a hollow structure, of which both top and bottom parts are open; a plurality of blade rib members, each of which is connected removably at one end to the outer surface of the hub member; and a blade-connecting member having a hollow structure, of which both top and bottom parts are open, to the inner part of which each of blade rib members is connected at the other end. The present invention does not use a conventional internal cooling method, but an ablation cooling method using the composite heat resistant material structure with metal core, so that a liquid rocket engine system may be simplified, and the reliability of liquid rocket engine increases, and the manufacturing cost is cut down.
摘要:
A rocket engine has a combustion chamber formed of an annular wall made of an annular wall material, and an annular insert made of an annular insert material that is of substantially the same thermal expansion coefficient as the annular wall material. The annular insert has an insert outer surface sized to fit within and contact the wall inner surface along less than the wall length. The annular wall and the annular insert are welded together. There is further an attachment between the combustion chamber and an injector. The attachment includes an annular metallic deposit bonded to the combustion chamber, an annular adaptor ring, a weld joint between the adaptor ring and the metallic deposit, and a joint between the adaptor ring and the injector.
摘要:
A discus-shaped aircraft is provided with a peripheral jet arrangement for generating lift and, in the bottom of the aircraft, at least one rocket engine supplied with silicon hydride and compressed air and operated under conditions in which the silicon hydride is reacted with nitrogen of the compressed air to form silicon nitride while the nitrogen of the silicon hydride compounds reacts with oxygen to form H.sub.2 O.
摘要:
A generator of hot gases employing hybrid propellant, more especially for a rocket-motor, and which includes an enclosure which terminates at one of its ends in a nozzle and in which there is accommodated a propellant in the solid phase and into which at least two injection devices have port, which devices each emit at least one jet of a propellant in the fluid phase able to enter into reaction with the propellant in the solid phase so as to produce a gaseous mass which escapes through the nozzle, wherein the enclosure is divided by a perforated partition or screen, arranged transversely to the general direction of flow of the gaseous mass, into an upstream space remote from the nozzle, in which space the entirety of the solid phase is accommodated in the form of a multitude of fragments, and into an unoccupied downstream space, one of the injection devices, or the primary injection device, having port in the upstream space while the other or secondary injection device has port in the downstream space.