Special Aerospace Services, LLC

Kaltura, Inc.

Rapt Media, Inc.

Christopher Hayes

Timothy Bulk

Methods and systems for manipulating surface topology of additively manufactured fluid interacting structures, such as additively manufactured heat exchangers or airfoils, and associated additively manufactured articles, are disclosed. In one aspect, an article which interacts with a fluid is imparted with surface topology features which affect performance parameters related to the fluid flow. The topological features may be sequenced, combined, intermixed, and functionally varied in size and form to locally manipulate and co-optimize multiple performance parameters at each or selectable differential lengths along a flow path. The co-optimization method may uniquely prioritize selectable performance parameters at different points along the flow path to improve or enhance overall system performance. Topological features may include design features such as dimples, fins, boundary layer disruptors, and biomimicry surface textures, and manufacturing artefacts such as surface roughness and subsurface porosity distribution and morphology.

Surface topology manipulation for performance enhancement of additively manufactured fluid-interacting components

Devices and methods of rocket propulsion are disclosed. In one aspect, a staged combustion liquid rocket engine with preburner and turbopump unit (TPU) integrated into the structure of the combustion chamber is described. An initial propellant mixture is combusted in a preburner combustion chamber formed as an annulus around a main combustion chamber, the combustion products from the preburner driving the turbine of the TPU and subsequently injected into the main combustion chamber for secondary combustion along with additional propellants, generating thrust through a supersonic nozzle. The preburner inner cylindrical wall is shared with the outer cylindrical wall of the engine's main combustion chamber and the turbine is axially aligned with the main combustion chamber. Liquid propellants supplied to the engine are utilized for regenerative cooling of the combustion chamber and preburner, where the liquid propellants are gasified in cooling manifolds before injection into the preburner and main combustion chamber.

Staged combustion liquid rocket engine cycle with the turbopump unit and preburner integrated into the structure of the combustion chamber

Surface topology manipulation for performance enchancement of additively manufactured fluid-interacting components

A computing device plays at least one first video content segment. The video content segment may be a portion of an interactive video content sequence including multiple segments that may each be selected during play of one or more of the other segments. The computing device determines one or more second video content segments that are associated with the first video content segment. Such determination may be made by analyzing information describing an interactive video content sequence of which the video content segment is a part. The computing device attempts to load one or more second video content segments. In this way, play of the video content segments may reduce and/or avoid delays in changing the video content being played.

Pre-fetching video content

An external application is loaded by an electronic device. The external application loads one or more internal applications. The internal application loads a player application, such as a video player. At least one communication channel is configured between the external application and the player application. Subsequently, the player application may provide signals to the external application via the communication connection when one or more events occur. In response, the external application may perform one or more actions and/or may provide reply signals to the player application. Additionally, the player application may provide instructions to the external application and/or the external application may provide instructions to the player application.

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Boulder, CO, United States of America

Christopher Hayes