Abstract: A recovery system for receiving rockets upon landing comprising a deceleration pool filled with liquid. The system may have a volume filled with the liquid having a desired density profile. An injection manifold injects gas into the liquid to create the density profile. The liquid may have a first density at a landing region of the pool and a second density greater than the first density away from the landing region, such as increasing in density radially outward from a center of the landing region. The pool may be located under a primary landing system intended to secure the landing rocket, such as a hook catch. The pool may be a contingency system for mitigating damage to a landing rocket that unsuccessfully attempts securing with the primary landing system.

Abstract: A fluid pump assembly includes a rotatable component that can be rotated about an axis and a static vane assembly located adjacent to the rotatable component. The static vane assembly includes a circumferential surface axially spaced from the rotatable component, and one or more vanes extending from the circumferential surface toward the rotatable component. The one or more vanes are configured to produce a radial load on the rotatable component when the rotatable component is rotating about the axis and a fluid is present between the static vane assembly and the rotatable component.

Abstract: A fluid pump assembly includes a rotatable component that can be rotated about an axis and a static vane assembly located adjacent to the rotatable component. The static vane assembly includes a circumferential surface axially spaced from the rotatable component, and one or more vanes extending from the circumferential surface toward the rotatable component. The one or more vanes are configured to produce a radial load on the rotatable component when the rotatable component is rotating about the axis and a fluid is present between the static vane assembly and the rotatable component.