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An aircraft 1 in the form of an airplane with a spiral inducing assembly 2 which is capable of inducing the airplane to travel in a continuous spiralling motion without rolling. Two fins 3 and 4 are attached to a tube 5 that is able to rotate around the encircled part of the fuselage. The fins 3, 4

An aircraft 1 in the form of an airplane with a spiral inducing assembly 2 which is capable of inducing the airplane to travel in a continuous spiralling motion without rolling. Two fins 3 and 4 are attached to a tube 5 that is able to rotate around the encircled part of the fuselage. The fins 3, 4 are able to rotate in a pivoting manner on the rotatable tube 5 with respect to the rotatable tube 5, thereby changing their pitch relative to the longitudinal axis of the rotatable tube 5. Fin 3 is larger than fin 4. The diferene in sizes between the fins makes the larger fin 3 exert a greater force on the rotatable tube 4 than the smaller fin 4 when the fins are pitched in unison. The aerodynamic imbalance between the fins thus casues the rotatable tube 5 to rotate. When pitched at an angle to the longitudinal axis in unison, both fins 3, 4 would exert a lateral force on the rotatable tube 5. Thus, as well as forcing the rotatable tube 5 to rotate, the fins 3, 4 would also push the rotatable tube sideways. But as the rotatable tube is pushed sideways, it rotates, and hence the lateral direction of push constantly revolves, causing a spiralling motion when in flight.

대표청구항 ▼

An aircraft 1 in the form of an airplane with a spiral inducing assembly 2 which is capable of inducing the airplane to travel in a continuous spiralling motion without rolling. Two fins 3 and 4 are attached to a tube 5 that is able to rotate around the encircled part of the fuselage. The fins 3, 4

An aircraft 1 in the form of an airplane with a spiral inducing assembly 2 which is capable of inducing the airplane to travel in a continuous spiralling motion without rolling. Two fins 3 and 4 are attached to a tube 5 that is able to rotate around the encircled part of the fuselage. The fins 3, 4 are able to rotate in a pivoting manner on the rotatable tube 5 with respect to the rotatable tube 5, thereby changing their pitch relative to the longitudinal axis of the rotatable tube 5. Fin 3 is larger than fin 4. The diferene in sizes between the fins makes the larger fin 3 exert a greater force on the rotatable tube 4 than the smaller fin 4 when the fins are pitched in unison. The aerodynamic imbalance between the fins thus casues the rotatable tube 5 to rotate. When pitched at an angle to the longitudinal axis in unison, both fins 3, 4 would exert a lateral force on the rotatable tube 5. Thus, as well as forcing the rotatable tube 5 to rotate, the fins 3, 4 would also push the rotatable tube sideways. But as the rotatable tube is pushed sideways, it rotates, and hence the lateral direction of push constantly revolves, causing a spiralling motion when in flight. xit of the cartridge to a rotation center of the take-up reel; a threader base to which a second end of the threader arm is rotatably connected; and an elastic body restricting backlash of the threader arm so that the threader pin does not shift from the rotation center, said elastic body being on said threader base and being stationary with respect to said threader arm. 7. The magnetic tape unit according to claim 6, wherein the elastic body is selected from the group consisting of a rubber block, a compression coil spring, and a resin block. 8. The magnetic tape unit according to claim 6, further comprising driving arm for driving the threader arm. 9. The magnetic tape unit according to claim 8, further comprising a motor, said threader arm being driven by said motor through said driving arm. 10. A magnetic tape unit comprising: a take-up reel for winding a magnetic tape thereon; a threader pin from which a leader block connected to a front end of the magnetic tape housed in a cartridge is suspended; a threader arm having a first end to which the threader pin is attached in order to lead the leader block from a tape exit of the cartridge to an inside of the take-up reel by leading the threader pin from the tape exit of the cartridge to a rotation center of the take-up reel; and an elastic member damping vibration of the threader arm so that the threader pin does not shift from the rotation center, said elastic body being immovable and being at a fixed position spaced apart from said take-up reel. A housing is interconnected to a stationary portion of the motor and defines a grinding chamber housing the blades therein. The assembly is mountable on a steam producing device so that the grinding chamber communicates with the water chamber of the steam producing device. The pump and grinder assembly is operatively effective for pumping water and loose scale contained within the water out of the steam producing device and grinding the scale into relatively smaller pieces. ned as a separation between said first rotation blade and said second rotation blade; and said first width being adjustable according to at least said size, said density, and said unburned carbon content of said first material, whereby said separation device is adaptable according to variations in said first material. 5. A separation device, according to claim 4, wherein: said first rotation blade includes a blade quantity and a first shape adapted to an inside surface of said casing; said second rotation blade includes a blade quantity and a second shape adapted to said inside surface of said casing; at least one of said first rotation blade and said second rotation blade being rotationally operable at least one of an opposite direction and a same direction of at least said other of said first rotation blade and said second rotation blade; and said first rotation blade and said second rotation blade being rotationally operable according to said inside surface to create circulating vortices within said casing sufficient to cause said separation and said reduction in size of said first material by fracture impact and shear stress. 6. A separation device, according to claim 5, further comprising: a suction device; a connecting channel connecting said suction device to said casing; and said suction device drawing a gas containing said first material into said inlet, over said first rotation blade, into said pulverization chamber, and over said second rotation blade to said segregation means to assist said vortices to transport said first material into said separation device for processing. 7. A separation device, according to claim 6, further comprising: at least one of a first and a second outlet opening on said casing; and said at least one outlet opening receiving said first reduced-size portion and said second reduced-size portion from said casing and transferring said first reduced-size portion and said second reduced-size portion to said segregation means. 8. A separation device, according to claim 7, further comprising: a first storage part in said segregation means; a second storage part in said segregation means; said first storage part formed for receiving and segregating said first reduced-size portion depending upon a particle size and a mass of said first reduced-size portion; and said second storage part formed for receiving and segregating said second reduced-size portion depending upon a particle size and a mass of said second reduced size-portion, whereby said separation device provides easy separation of said unburned carbon from said second portion. 9. A separation device, according to claim 8, further comprising: said first and said second outlet opening; said first outlet opening at a first position on said casing adjacent said first rotation axis receives said first reduced-size portion; and said second outlet opening at a second position on said casing adjacent an outer circumference of said second rotation blade receives said second reduced-size portion; whereby segregation of particle size and mass is simplified. 10. A separation device, according to claim 9, wherein: said first inlet opening is at a third position on said casing adjacent an outer circumference of said first rotation blade. 11. A separation device, according to claim 10, further comprising: a classification device in said segregation means; said connecting channel connects said classification device to said casing; and said classification device receives discharged particles of said first reduced-size portion and said second reduced-size portion and uses differences in mass and density of said discharged particles to classify them for later use. 12. A method for separating unburned carbon in a first material containing both an unburned carbon portion and a second portion, comprising the steps of: operating a pulverization chamber comprising first and said second rotation blades dispose