초록 ▼

This airlifting surface division idea provides for division of airlifting surfaces resulting in low induced and interference drag. It can be applied to aircraft wings and helicopter and windmill rotor blades to significantly reduce induced drag when compared to prior art. Also, it can be used for ne

This airlifting surface division idea provides for division of airlifting surfaces resulting in low induced and interference drag. It can be applied to aircraft wings and helicopter and windmill rotor blades to significantly reduce induced drag when compared to prior art. Also, it can be used for new concepts of large subsonic and hypersonic aircraft to significantly reduce their overall drag and external dimensions when compared to prior art, simultaneously providing for very good pitch maneuver and longitudinal stability of such aircraft.

대표청구항 ▼

This airlifting surface division idea provides for division of airlifting surfaces resulting in low induced and interference drag. It can be applied to aircraft wings and helicopter and windmill rotor blades to significantly reduce induced drag when compared to prior art. Also, it can be used for ne

This airlifting surface division idea provides for division of airlifting surfaces resulting in low induced and interference drag. It can be applied to aircraft wings and helicopter and windmill rotor blades to significantly reduce induced drag when compared to prior art. Also, it can be used for new concepts of large subsonic and hypersonic aircraft to significantly reduce their overall drag and external dimensions when compared to prior art, simultaneously providing for very good pitch maneuver and longitudinal stability of such aircraft. rface of the cylindrical part on an upstream fuel side of the valve seat, each of the plurality of ceramic heaters having an arc shape in cross section and being arranged in a circumferential direction to form a cylindrical shape in contact with an outer peripheral surface of the cylindrical part; and a heater holder surrounding outer peripheral surfaces of the plurality of ceramic heaters and being in contact with the outer peripheral surface of the valve body; wherein the heater holder includes a large diameter part and a small diameter part, the plurality of ceramic heaters is inserted in the large diameter part and the small diameter part is press-fitted to the cylindrical part of the valve body. 7. The fuel injector according to claim 6, wherein the large diameter part and the small diameter part respectively provide slits extending in the axial direction to provide resiliency, each of the slits is located without corresponding to the other in a circumferential direction. 8. A fuel injector comprising: a valve body having a cylindrical part defining a fuel passage and a valve seat at an end of the cylindrical part on a downstream fuel side and providing an orifice on a downstream fuel side of the valve seat; a valve member enclosed and supported in the valve body to reciprocate in the fuel passage in an axial direction of the cylindrical part, the valve member having a contact portion on a downstream fuel side end to be seated on the valve seat to close the orifice and lifted from the valve seat to open the orifice; a heating element provided on an outer peripheral surface of the cylindrical part of the valve body on an upstream fuel side of the valve seat; and a holder surrounding an outer periphery of the heating element and being in contact with both the outer periphery of the heating element and the outer peripheral surface of the cylindrical part of the valve body, wherein the holder is made of metal. 9. The fuel injector according to claim 8, wherein the heating element is a ceramic heater. 10. The fuel injector according to claim 9, wherein the ceramic heater has a cylindrical shape and press-fitted in the holder. 11. The fuel injector according to claim 9, wherein the ceramic heater is brazed with the holder. 12. The fuel injector according to claim 8, wherein the holder contacts the outer peripheral surface of the cylindrical part of the valve body axially between the heating element and the valve seat. 13. The fuel injector according to claim 12, wherein the holder has a large diameter part and a small diameter part, the large diameter part contacting the outer peripheral surface of the heating element, and the small diameter part contacting the outer peripheral surface of the cylindrical part of the valve body. 14. The fuel injector according to claim 8, wherein the valve member has a hollow cylindrical part having a bottom on a valve seat side. 15. The fuel injector according to claim 8, further comprising a cover surrounding an outer periphery of the holder with a predetermined space. 16. A fuel injector comprising: a valve body having a cylindrical part defining a fuel passage and a valve seal at an end of the cylindrical part on a downstream fuel side and providing an orifice on a downstream fuel side of the valve seat; a plurality of ceramic heaters provided on an outer peripheral surface of the cylindrical part on an upstream fuel side of the valve seat, each of the plurality of ceramic heaters having an arc shape in cross section and being arranged in a circumferential direction to form a cylindrical shape in contact with an outer peripheral surface of the cylindrical part; and a heater holder surrounding outer peripheral surfaces of the plurality of ceramic heaters and being in contact with the outer peripheral surface of the valve body, wherein the heater holder has a slit extending in an axial direction to provide resiliency. 17. A fuel injector comprising: a valve body having a cylindrical part defining a fuel passage and a valve seat at an end of the cylindrical part on a downstream fuel side and providing an orifice on a downstream fuel side of the valve seat; a valve member enclosed and supported in the valve body to reciprocate in the fuel passage in an axial direction of a cylindrical part, the valve member having a contact portion on a downstream fuel side end to be seated on the valve seat to close the orifice and lifted from the valve seat to open orifice; a heating element provided on an outer peripheral surface of the cylindrical part of the valve body on an upstream fuel side of the valve seat; and a holder surrounding an outer periphery of the heating element and being in contact with both the outer periphery of the heating element and the outer peripheral surface of the cylindrical part of the valve body, wherein the holder has a large diameter part and a small diameter part, the heating element is press-fitted in the large diameter part and the small diameter part is press-fitted on the cylindrical part of the valve body. 18. The fuel injector according to claim 17, wherein the large diameter part and the small diameter part respectively provide slits extending in the axial direction, and each of the slits is located without corresponding to the other in a circumferential direction. 19. A fuel injector comprising: a valve body having a cylindrical part defining a fuel passage and a valve seat at an end of the cylindrical part on a downstream fuel side and providing an orifice on a downstream fuel side of the valve seat; a valve member enclosed and supported in the valve body to reciprocate in the fuel passage in an axial direction of a cylindrical part, the valve member having a contact portion on a downstream fuel side end to be seated on the valve seat to close the orifice and lifted from the valve seat to open orifice; a heating element provided on an outer peripheral surface of the cylindrical part of the valve body on an upstream fuel side of the valve seat; and a holder surrounding an outer periphery of the heating element and being in contact with both the outer periphery of the heating element and the outer peripheral surface of the cylindrical part of the valve body, wherein the heating element is fitted around the outer peripheral surface of the cylindrical part of the valve body more loosely than the holder is fitted around the outer periphery of the heating element.