Vertiport and associated method for enhancing stability and attenuating noise during an aircraft landing and takeoff

Patent metadata

Field	Value
Publication number	US-11535989-B2
Application number	US-201916524974-A
Country	US
Kind code	B2
Filing date	Jul 29, 2019
Priority date	Jul 29, 2019
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A vertiport for an aircraft. The vertiport includes a landing platform that includes a landing surface and a plurality of primary through-openings, wherein the landing platform at least partially defines a primary chamber subjacent to the landing platform, the primary chambering having a primary chamber volume, and wherein the plurality of primary through-openings are in fluid communication with the primary chamber. The disclosed vertiport further includes an air moving unit positioned to withdraw air from the primary chamber.

First claim

What is claimed is:

1. A vertiport for an aircraft, said vertiport comprising:
a landing platform comprising a landing surface and a plurality of primary through-openings, wherein said landing platform at least partially defines a primary chamber subjacent to said landing platform, said primary chamber having a primary chamber volume, and wherein said plurality of primary through-openings are in fluid communication with said primary chamber;
an air moving unit positioned to withdraw air from said primary chamber; and
at least one actuator connected to said landing platform to move said landing platform along an axis that is substantially perpendicular to said landing surface of said landing platform, thereby controlling a depth of said primary chamber.

2. The vertiport of claim 1 defining a vertical axis that is substantially perpendicular to said landing surface of said landing platform, wherein an airflow is generated as said air moving unit withdraws air from said primary chamber, and wherein said airflow moves vertically downward through said plurality of primary through-openings into said primary chamber and then is redirected laterally outward relative to said vertical axis.

3. The vertiport of claim 1 wherein said air moving unit is one of a plurality of air moving units positioned to withdraw air from said primary chamber.

4. The vertiport of claim 3 further comprising at least one side wall, said side wall further defining said primary chamber.

5. The vertiport of claim 4 wherein at least one air moving unit of said plurality of air moving units is positioned proximate said side wall, and wherein at least one air moving unit of said plurality of air moving units is positioned within said primary chamber and is spaced away from said side wall.

6. The vertiport of claim 4 wherein at least one air moving unit of said plurality of air moving units is positioned to withdraw air from said primary chamber through an opening in said side wall.

7. The vertiport of claim 3 wherein said plurality of air moving units generate a total volumetric flow rate, and wherein said total volumetric flow rate is at least 50 percent of said primary chamber volume per minute.

8. The vertiport of claim 1 wherein said landing platform is reinforced with at least one reinforcement member.

9. The vertiport of claim 1 wherein said landing platform comprises mesh and said mesh defines said plurality of primary through-openings.

10. The vertiport of claim 1 wherein said landing surface has a landing surface area, and wherein said plurality of primary through-openings comprise about 10 percent to about 25 percent of said landing surface area.

11. The vertiport of claim 1 wherein said landing surface has a landing surface area, and wherein said plurality of primary through-openings comprise at least about 50 percent of said landing surface area.

12. The vertiport of claim 1 further comprising a support structure elevating said landing platform relative to a substructure.

13. The vertiport of claim 1 wherein each primary through-opening of said plurality of primary through-openings defines a through-opening axis and comprises a primary through-opening area measured perpendicular to said through-opening axis, and wherein said primary through-opening area of at least one primary through-opening of said plurality of primary through-openings is variable.

14. The vertiport of claim 13 further comprising:
a controller; and
a sensor in communication with said controller,
wherein said controller controls at least one of:
said depth of said primary chamber; and
said primary through-opening area of said at least one primary through-opening of said plurality of primary through-openings.

15. The vertiport of claim 1 wherein said primary chamber is a noise suppressor.

16. The vertiport of claim 1 further comprising a noise suppressor positioned in said primary chamber.

17. The vertiport of claim 16 wherein said noise suppressor comprises a plurality of acoustic resonators, each acoustic resonator of said plurality of acoustic resonators comprises a secondary chamber and a secondary through-opening in fluid communication with said secondary chamber.

18. The vertiport of claim 17 further comprising a controller configured to control, for each acoustic resonator of said plurality of acoustic resonators, at least one of:
a depth of said secondary chamber; and
a secondary through-opening area of said secondary through-opening.

19. A vertiport for an aircraft, said vertiport comprising:
a landing platform comprising a landing surface and a plurality of primary through-openings, wherein said landing platform at least partially defines a primary chamber subjacent to said landing platform, said primary chamber having a primary chamber volume, and wherein said plurality of primary through-openings are in fluid communication with said primary chamber;
a plurality of acoustic resonators received in said primary chamber, each acoustic resonator of said plurality of acoustic resonators comprises a secondary chamber and a secondary through-opening in fluid communication with said secondary chamber; and
a plurality of air moving units positioned at least partially within said primary chamber, wherein said plurality of air moving units establish an airflow that moves vertically downward through said plurality of primary through-openings into said primary chamber and laterally outward from said primary chamber.

20. The vertiport of claim 19 further comprising at least one linear actuator operatively connected to said landing platform to move said landing platform along a vertical axis that is substantially perpendicular to said landing surface of said landing platform, thereby defining a depth of said primary chamber.

21. A method for enhancing stability of an aircraft, said method comprising:
establishing an airflow through a landing platform and into a primary chamber subjacent to said landing platform;
redirecting said airflow outward from said primary chamber; and
selectively controlling a depth of said primary chamber by linearly moving said landing platform along an axis that is substantially perpendicular to a landing surface of said landing platform.

22. The method of claim 21 wherein said aircraft comprises at least two rotors.

23. The method of claim 21 further comprising moving said airflow across a plurality of acoustic resonators positioned in said primary chamber.

Assignees

• Aurora Flight Sciences Corp

Inventors

• Sarpotdar Shekhar Mahadev
• Ismail Yahia A

Classifications

• E01C9/008

  Paving take-off areas for vertically starting aircraft (landing platforms for helicopters E01F3/00) · CPC title

• B64F1/26

  for reducing engine or jet noise; Protecting airports from jet erosion · CPC title

• B64F1/007

  Helicopter portable landing pads · CPC title

• G05B15/02

  electric · CPC title

• E01F3/00 Primary

  Landing stages for helicopters, e.g. located above buildings (layout of airfields B64F; buildings or like structures for special purposes E04H) · CPC title