초록 ▼

An electromagnetic propulsion fan includes a hub and a plurality of fan blades coupled to the hub. The electromagnetic propulsion fan also includes a rim coupled to the fan blades such that rotating the rim causes the fan blades to rotate. The rim includes a plurality of magnets coupled thereto. The

An electromagnetic propulsion fan includes a hub and a plurality of fan blades coupled to the hub. The electromagnetic propulsion fan also includes a rim coupled to the fan blades such that rotating the rim causes the fan blades to rotate. The rim includes a plurality of magnets coupled thereto. The electromagnetic propulsion fan further includes a plurality of electromagnets in proximity to the rim, the electromagnets controllable to generate magnetic fields that interact with the magnetic fields of the magnets to cause the rim to rotated.

대표청구항 ▼

An electromagnetic propulsion fan includes a hub and a plurality of fan blades coupled to the hub. The electromagnetic propulsion fan also includes a rim coupled to the fan blades such that rotating the rim causes the fan blades to rotate. The rim includes a plurality of magnets coupled thereto. The

An electromagnetic propulsion fan includes a hub and a plurality of fan blades coupled to the hub. The electromagnetic propulsion fan also includes a rim coupled to the fan blades such that rotating the rim causes the fan blades to rotate. The rim includes a plurality of magnets coupled thereto. The electromagnetic propulsion fan further includes a plurality of electromagnets in proximity to the rim, the electromagnets controllable to generate magnetic fields that interact with the magnetic fields of the magnets to cause the rim to rotated. ly measured quantity. 17. An apparatus comprising: first means for providing a first signal representative of a three dimensional geo-based position of a first location in a frame of reference of an aircraft; second means for providing a second signal representative of a three dimensional geo-based position of a second location in said frame of reference of an aircraft; means for determining a location separation distance between said first location and said second location; means for generating a deviation signal of said second location with respect to a predetermined aircraft flight path vector, wherein said deviation signal is a function of said first signal and said location separation distance. 18. An apparatus of claim 17 wherein said means for determining a location separation distance is a computer processor included in said second means for providing a second signal representative of a three dimensional geo-based position. 19. An apparatus of claim 18 wherein said means for generating a deviation of said second location with respect to a predetermined aircraft flight path vector is a computer processor included in said first means for providing a first signal representative of a three dimensional geo-based position of a first location in a frame of reference of an aircraft. , wherein the display device is further configured to simultaneously display a subset of the plurality of password characters, wherein one of the subset of the plurality of password characters is highlighted. 13. A vehicle computer system as recited in claim 10, further comprising a fourth button configured to enter a plurality selected password characters. 14. A vehicle computer system as recited in claim 10, wherein the third button is rotatable to select among the plurality of password characters by scrolling through the plurality of password characters when the third button is rotated. 15. A user interface for a vehicle stereo system, the user interface comprising: a first button configured to initiate a login procedure; a second button that is rotatable in a first direction and an opposite direction, the second button configured to scroll through a plurality of password characters, the second button further configured to select a highlighted password character when the second button is pressed; and a display device coupled to the second button for displaying the highlighted password character. 16. A user interface as recited in claim 15, wherein rotating the second button in the first direction scrolls through the plurality of password characters in a first direction and rotating the second button in the opposite direction scrolls through the plurality of password characters in a second direction, wherein the second direction is opposite the first direction. 17. A user interface as recited in claim 15, further comprising a third button configured to enter a plurality of selected password characters. 18. A user interface as recited in claim 15, further comprising a third button configured to terminate selection of password characters. 19. A user interface as recited in claim 15, wherein the second button is further configured to adjust an audio volume of the vehicle stereo system. 20. A user interface for a vehicle stereo system, the user interface comprising: a first button configured to initiate a login procedure; a second button that has a first position and a second position, the second button configured to scroll through a plurality of password characters in a first direction when the second button is in the first position, and the second button further configured to scroll through the plurality of password characters in an opposite direction when the second button is in the second position; a third button configured to select a highlighted password character; and a display device coupled to the second button for displaying the highlighted password character. 21. A user interface as recited in claim 20, wherein the second button has a third position in which the scrolling of the plurality of passwords stops. 22. A user interface as recited in claim 20, further comprising a fourth button configured to terminate selection of password characters. 23. A user interface as recited in claim 20, wherein the second button is further configured to adjust an audio volume of the vehicle stereo system. 24. A user interface as recited in claim 20, wherein the second button is further configured to change radio frequencies. 25. A user interface as recited in claim 20, wherein the second button is further configured to change music tracks on a CD. 26. A method comprising: receiving a first login request from a first user of a vehicle computer system; displaying a password prompt to the first user of the vehicle computer system; receiving a first password from the first user of the vehicle computer system; validating the first password; receiving a second login request from a second user of the vehicle computer system; displaying the password prompt to the second user of the vehicle computer system; receiving a second password from the second user of the vehicle computer system; and validating the second password. 27. A method as recited in claim 26, wherein the first password is received through a user inte