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公开(公告)号：US20180299907A1
公开(公告)日：2018-10-18
申请号：US15853158
申请日：2017-12-22
Applicant: Facebook, Inc.
Inventor： Zhang Liu , Amnon G. Talmor
Abstract: In one embodiment, an aircraft includes one or more first wings configured to produce lift in a first direction when the aircraft is moving in a second direction that is substantially perpendicular to the first direction. The first wings may also produce a centripetal force when the aircraft is banking while moving in the second direction. The aircraft may also include one or more second wings affixed and oriented substantially perpendicular to the first wings and configured to produce a counter force in a third direction that is substantially perpendicular to both the first direction and the second direction. The counter force may reduce the centripetal force when the aircraft is banking.
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Patent Agency Ranking
公开(公告)号：US10928837B2
公开(公告)日：2021-02-23
申请号：US15853158
申请日：2017-12-22
Applicant: Facebook, Inc.
Inventor： Zhang Liu , Amnon G. Talmor
Abstract: In one embodiment, an aircraft includes one or more first wings configured to produce lift in a first direction when the aircraft is moving in a second direction that is substantially perpendicular to the first direction. The first wings may also produce a centripetal force when the aircraft is banking while moving in the second direction. The aircraft may also include one or more second wings affixed and oriented substantially perpendicular to the first wings and configured to produce a counter force in a third direction that is substantially perpendicular to both the first direction and the second direction. The counter force may reduce the centripetal force when the aircraft is banking.
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公开(公告)号：US20180297693A1
公开(公告)日：2018-10-18
申请号：US15853045
申请日：2017-12-22
Applicant: Facebook, Inc.
Inventor： Zhang Liu , Amnon G. Talmor , Yusong Cao
Abstract: In one embodiment, an aircraft includes a number of propellers Nprop, wherein each propeller comprises a diameter dprop, has a propeller efficiency ηprop, and is configured to absorb power pprop to rotate at a rate RPM to generate thrust for a flight speed V of the aircraft. The aircraft may further include a total power ptotal absorbed by the propellers that is approximately pprop×Nprop, a wing having a circulation distribution, wherein the wing comprises a wingspan B, a drag D that is approximately equal to ptotal×ηprop/V. For V and B, the circulation distribution, dprop, and RPM substantially minimizes D.
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公开(公告)号：US11164464B1
公开(公告)日：2021-11-02
申请号：US16549234
申请日：2019-08-23
Applicant: Facebook, Inc.
Inventor： Jack Marriott , Birce Tezel , Zhang Liu , Nicolas E. Stier-Moses , Julian Diego Mestre
Abstract: The present disclosure is directed toward methods, non-transitory computer-readable media, and systems for trajectory optimization in a high-altitude, long-endurance aircraft. For example, the systems described herein can generate an optimized flight plan for an aircraft during active flight of the aircraft by utilizing a greedy algorithm with buffering. In one or more embodiments, the systems described herein identify a plurality of possible states and select a predetermined number of the top possible states (based on energy change associated with transitioning to each possible state) at each incremental time period within a flight time window starting from an initial state to a plurality of possible states for a final incremental time period. Furthermore, in some embodiments, the systems described herein select a final state based on a final energy associated with the final state and determine a flight plan for the aircraft from the initial state to the selected final state.
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公开(公告)号：US20170183095A1
公开(公告)日：2017-06-29
申请号：US14982648
申请日：2015-12-29
Applicant: Facebook, Inc.
Inventor： Zhang Liu , Chien-Chung Chen
CPC classification number: B64C39/024 , B60L8/003 , B60L11/1835 , B60L11/1838 , B60L2200/10 , B64C2201/042 , B64C2201/066 , B64D2211/00 , H02J50/30 , H02J50/90 , H02S20/30 , H02S40/38 , Y02T10/7016 , Y02T10/7072 , Y02T10/7083 , Y02T90/121 , Y02T90/125 , Y02T90/128 , Y02T90/14 , Y02T90/163
Abstract: In one embodiment, a system includes a laser configured to generate a laser beam and a laser-aiming module configured to aim the laser beam to be at least in part incident on a remotely located, continuously moving solar cell. The system also includes a controller configured to receive a feedback signal indicating a position of the laser beam relative to the remotely located, continuously moving solar cell and instruct the laser-aiming module to adjust the aiming of the laser beam based on the feedback signal.
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公开(公告)号：US10155586B2
公开(公告)日：2018-12-18
申请号：US14982648
申请日：2015-12-29
Applicant: Facebook, Inc.
Inventor： Zhang Liu , Chien-Chung Chen
Abstract: In one embodiment, a system includes a laser configured to generate a laser beam and a laser-aiming module configured to aim the laser beam to be at least in part incident on a remotely located, continuously moving solar cell. The system also includes a controller configured to receive a feedback signal indicating a position of the laser beam relative to the remotely located, continuously moving solar cell and instruct the laser-aiming module to adjust the aiming of the laser beam based on the feedback signal.
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