Landing apparatus for a reusable launch vehicle

Patent metadata

Field	Value
Publication number	US-11845574-B2
Application number	US-202217887064-A
Country	US
Kind code	B2
Filing date	Aug 12, 2022
Priority date	Aug 24, 2021
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A landing apparatus for a reusable launch vehicle is provided, including a landing leg pivotably mounted at one end to the reusable launch vehicle, for example, to a propellant tank part, and mounted at the other end to the propellant tank part by a detaching means such as a pyro bolt for example, a cover mounted to an outside of the landing leg along a longitudinal direction of the landing leg, and a leg landing plate mounted to a distal end of the landing leg and relatively pivotable with respect to the landing leg by its own weight when the other end of the landing leg is separated from the propellant tank part.

First claim

The invention claimed is:

1. A reusable launch vehicle including a landing apparatus, the landing apparatus comprising:
a landing leg pivotably mounted at one end to the reusable launch vehicle, and mounted to be selectively detachable from the other end to the reusable launch vehicle;
a cover pivotably mounted to the landing apparatus to cover an outside of the landing leg near the one end;
a leg landing plate mounted at the other end of the landing leg and relatively pivotable with respect to the landing leg by its own weight when the other end of the landing leg is separated from the reusable launch vehicle; and
a mechanism configured to detachably fix the other end of the landing leg to the reusable launch vehicle in a manner such that the other end is selectively detachable from the reusable launch vehicle,
wherein, during landing of the reusable launch vehicle, when the other end of the landing leg is separated from the reusable launch vehicle by the mechanism, the cover is configured to be spread by way of air resistance, and the landing leg is configured to extend longitudinally along the landing leg.

2. The reusable launch vehicle according to claim 1 , wherein the landing leg is an extendable multi-stage cylinder.

3. The reusable launch vehicle according to claim 2 , wherein the one end of the landing leg is pivotably mounted to an upper mount frame of the reusable launch vehicle, and
an upper cylinder of the multi-stage cylinder is provided with a protrusion, such that, when the landing leg is pivoted by a predetermined angle with respect to the reusable launch vehicle, the protrusion comes into contact with the upper mount frame to prevent the landing leg from being pivoted further.

4. The reusable launch vehicle according to claim 3 , wherein a point at which the one end of the landing leg is mounted to the upper mount frame is positioned higher than a center of gravity of the reusable launch vehicle.

5. The reusable launch vehicle according to claim 1 , wherein the mechanism comprises a pyro bolt.

6. The reusable launch vehicle according to claim 3 , wherein the upper mount frame is fixed to a Y-ring part of a propellant tank part of the reusable launch vehicle.

Assignees

• Korea Aerospace Res Inst

Inventors

• Jung Dong Ho

Classifications

• B64G1/625 Primary

  Landing devices; Undercarriages · CPC title

• B64G1/006

  Reusable launch rockets or boosters · CPC title