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

IPC: G05D1/08 ,  B64C39/08 ,  B64C9/00

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.

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

IPC: G05D1/08 ,  B64C9/00 ,  B64C39/08

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.

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

IPC: B64C23/06 ,  B64C3/10

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.