초록 ▼

A hybrid rocket motor is provided with a precombustion chamber supplied with propellant from separate fuel and oxidizer sources. The propellant can be in the form of gas or liquid and injected substantially tangentially into the head end of the hybrid motor adjacent the oxidizer injector to form a p

A hybrid rocket motor is provided with a precombustion chamber supplied with propellant from separate fuel and oxidizer sources. The propellant can be in the form of gas or liquid and injected substantially tangentially into the head end of the hybrid motor adjacent the oxidizer injector to form a propellant swirl. As the hybrid motor oxidizer is injected into the swirl, it is heated and gasified, and assumes a swirling motion which increases the oxidizer path length and thereby increases the dwell time of the oxidizer. The increased dwell time increases combustion efficiency and permits multiple restarts of the hybrid motor. The propellant may also be a combination of solid and fluid reactants. In one embodiment, the oxidizer injector is extended into the combustion chamber to form a toroidal precombustion chamber which has an annular nozzle adjacent a face of the oxidizer injector.

대표청구항 ▼

A hybrid rocket motor is provided with a precombustion chamber supplied with propellant from separate fuel and oxidizer sources. The propellant can be in the form of gas or liquid and injected substantially tangentially into the head end of the hybrid motor adjacent the oxidizer injector to form a p

A hybrid rocket motor is provided with a precombustion chamber supplied with propellant from separate fuel and oxidizer sources. The propellant can be in the form of gas or liquid and injected substantially tangentially into the head end of the hybrid motor adjacent the oxidizer injector to form a propellant swirl. As the hybrid motor oxidizer is injected into the swirl, it is heated and gasified, and assumes a swirling motion which increases the oxidizer path length and thereby increases the dwell time of the oxidizer. The increased dwell time increases combustion efficiency and permits multiple restarts of the hybrid motor. The propellant may also be a combination of solid and fluid reactants. In one embodiment, the oxidizer injector is extended into the combustion chamber to form a toroidal precombustion chamber which has an annular nozzle adjacent a face of the oxidizer injector. detecting a user input entry for selecting a stored information module; displaying the selected module responsive to said detected user input entry; storing a marker character in a predefined input field of each link reference phrase to the displayed modules; and storing a blank character in each predefined input field of each link reference phrase responsive to a user exiting the hypertext network. 7. A method for dynamically displaying hypertext modules as recited in claim 6 wherein the step of displaying the selected module includes the step displaying a predefined marker character with each link reference phrase for previously displayed modules. 8. A method for dynamically displaying hypertext modules as recited in claim 6 further comprising the step of maintaining each said stored marker character throughout a complete session of the hypertext network. 9. An interactive data processing system comprising: a processor device; a user input device coupled to said processor device for user selection input; a memory for storing a hypertext network having a plurality of information modules, each module including a predefined descriptive header and at least some modules including a link reference phrase to another one of said plurality of stored information modules; each link reference phrase including a marker character input field; a display coupled to said processor device for displaying one of said plurality of stored information modules responsive to a user selection input; means responsive to displaying said selected module for storing a marker character in said marker character input field of each link reference phrase to said selected displayed module; and means responsive to a user access to the hypertext network for setting said marker character input field to blank. a accessing information input is to receive at least a portion of a branch instruction address. 12. The filtered memory of claim 9 wherein each of said plurality of data entries is to store a memory operation address; and the data accessing information input is to receive at least a portion of an instruction address. 13. The filtered memory of claim 9 wherein each of said plurality of data entries comprises: said relevance counter field. 14. A filtered memory comprising: means for providing a plurality of first entries having at least a tag field; means for comparing coupled to said tag fields of said means for providing the plurality of first entries and having an input for address data; and means for providing a plurality of second entries having a field to store data; each of said plurality of second entries field to store data, upon a hit in the plurality of first entries. 15. The filtered memory of claim 14 further comprising: means for selecting between said data value input and said data accessing information input. 16. The filtered memory of claim 14 wherein said means for selecting comprises: means for outputting coupled to said second means for storing and said second means for comparing. 17. The filtered memory of claim 14 wherein each of said plurality of first entries tag fields has an associated relevance counter field to store a relevance counter value. 18. A machine-readable medium having stored thereon a plurality of executable instructions to perform a method comprising: determining whether there has been a prior attempt to store a data item in a memory, during an attempt to store the data item in the memory; and storing the data item in the memory during the attempt to store the data item in the memory, if there have been a threshold number of prior attempts to store the data item in the memory. 19. The machine-readable medium of claim 18 wherein the threshold number is one. 20. The machine-readable medium of claim 18 wherein storing the data item in the memory comprises: storing the data item in the memory, if there has been one prior attempt to store the data item in the memory. 21. The machine-readable medium of claim 20 further comprises: storing a data item in a second memory section, if it is determined that there has been a prior attempt to store the data item. 22. The machine-readable medium of claim 18 wherein said determining comprises: reading from a first memory section a count value of prior attempts to store the data item. 23. The machine-readable medium of claim 22 further comprising: allocating an entry in the first memory section for the data item, if there is no count value stored in the first memory section. 24. The machine-readable medium of claim 18 wherein said storing comprises: storing the data item in a second memory section.