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Harmful trailing vortices downstream of an aircraft wing are at least partly dissipated by a respective counteracting vortex for each trailing vortex at each wing. An auxiliary counteracting vortex generating flap, preferably in the form of at least part of a delta wing, is journaled to the respecti

Harmful trailing vortices downstream of an aircraft wing are at least partly dissipated by a respective counteracting vortex for each trailing vortex at each wing. An auxiliary counteracting vortex generating flap, preferably in the form of at least part of a delta wing, is journaled to the respective wing in the area of the outer end of a landing flap. The counteracting vortex is imposed on the respective trailing vortex, whereby the trailing vortex is caused to vibrate. The vibration dissipates the trailing vortex at least partially.

대표청구항 ▼

Harmful trailing vortices downstream of an aircraft wing are at least partly dissipated by a respective counteracting vortex for each trailing vortex at each wing. An auxiliary counteracting vortex generating flap, preferably in the form of at least part of a delta wing, is journaled to the respecti

Harmful trailing vortices downstream of an aircraft wing are at least partly dissipated by a respective counteracting vortex for each trailing vortex at each wing. An auxiliary counteracting vortex generating flap, preferably in the form of at least part of a delta wing, is journaled to the respective wing in the area of the outer end of a landing flap. The counteracting vortex is imposed on the respective trailing vortex, whereby the trailing vortex is caused to vibrate. The vibration dissipates the trailing vortex at least partially. to reverse-rotate the reel upon the force generating; a force transmitting portion including an arm positioned in a first chamber of the housing, one end of which is directed to the piston in the cylinder and the other end of which is extended out of the cylinder, a pulley rotatably mounted on axes of the other branched end of the arm and a cable fixed at one end to a predetermined position of the housing, passed through the pulley, wound around a clutch disk by a predetermined turn and fixed at the other end to a predetermined position of the clutch disk; and a pretensioner positioned in a second chamber adjacent to the first chamber, which comprises the clutch disk and a clutch portion, in which the clutch disk includes a circular groove formed around the periphery thereof to allow a predetermined length of the cable to be wound thereon, a plurality of the second coupling projections each having a right-angled surface toward one direction and a slanted surface toward the other direction adjacent to the periphery of one side surface thereof, at least three of coupling grooves each cut out at one side in a right-angle and at the other side in a slant angle and a first fixing groove formed to fix the other end of the cable, and the clutch portion includes at least three of first coupling projections each forming a slanted surface at one side and a right-angled surface at other side for cooperating with the coupling grooves to allow the clutch disk to be reversely rotated and a plurality of third coupling projections or concaved grooves formed at the positions facing to the second coupling projections on one side surface of the reel for coupling with the second coupling projections. 2. The pretensioner integrated with the pyrotechnic gas generating apparatus according to claim 1, in which: at least three of the first coupling projections in the second chamber are positioned at different arc angles α, β, γ to be staggered from one another properly dividing the circumferential angle of 360° so that they are respectively inserted into preferable insertion position of the coupling grooves. 3. The pretensioner integrated with the pyrotechnic gas generating apparatus according to claim 1, in which: a small bearing and a pin are used to mount the pulley on the arm to freely rotate the pulley, thereby minimizing the friction of the cable on the pulley. 4. The pretensioner integrated with the pyrotechnic gas generating apparatus according to claim 1, in which: a weight is provided on the pulley to have an eccentricity so that the weight center of the pulley is slightly inclined toward one direction. 5. The pretensioner integrated with the pyrotechnic gas generating apparatus according to claim 1, in which: supporting grooves are formed on both sides of the pulley and supporting bars are fixed to positions corresponding to at least one predetermined length of the cable, thereby securing the exact traveling length of the cable. 6. The pretensioner integrated with the pyrotechnic gas generating apparatus according to claim 1, in which: the safety belt retractor further comprises a guider for guiding the safety belt being wound on or released from the reel, thereby smoothing the webbing due to the reverse-rotating of the reel upon the operating of the pretensioner. rt housing which transmits loads developed by the main rotor assembly into the airframe. Integral main rotor servo attachment lugs extend from the cylindrical body member to provide lower attachment points for the rotor servo actuators which are operable to articulate a rotor swash plate or the like. The servo attachment lugs are integrally formed as part of the cylindrical body member and spaced thereabout. A substantially L-shaped metallic insert is sandwiched and bonded within each servo attachment lug to resist axial and transverse tension of the rather high forces exerted by the rotor servo actuators.