One-way imaging optical window film
    92.
    发明申请
    One-way imaging optical window film 审中-公开
    单向成像光学窗膜

    公开(公告)号:US20020118460A1

    公开(公告)日:2002-08-29

    申请号:US09793330

    申请日:2001-02-26

    Abstract: A one-way imaging optical film is provided by a transparent polymer substrate bearing a first coating defining an image area and a second coating defining a background or surround area. In the visible light spectrum, the two coatings have very similar light transmittance characteristics and very similar reverse reflectance characteristics, but different reflectance characteristics such that when the film is viewed from the coated side the image area is visually distinct from the surround area, and when the film is viewed from the substrate side, the film is transparent and the image virtually non-discernible. The film has a visible light transmittance of at least about 25 percent for use especially as an architectural and vehicle window film.

    Abstract translation: 单向成像光学膜由承载限定图像区域的第一涂层和限定背景或环绕区域的第二涂层的透明聚合物基板提供。 在可见光光谱中,两个涂层具有非常相似的透光率特性和非常相似的反向反射特性,但反射特性不同,使得当从涂覆侧观察膜时,图像区域在视觉上与环绕区域不同,并且当 从基板侧观察膜,膜是透明的,并且图像实际上是不可辨别的。 该膜具有至少约25%的可见光透射率,特别用作建筑和车辆窗膜。

    FABRICATION OF NEAR NET-SHAPED SILICON CARBIDE STRUCTURES

    公开(公告)号:US20250042821A1

    公开(公告)日:2025-02-06

    申请号:US18365115

    申请日:2023-08-03

    Abstract: A method of manufacturing a target structure is provided. The method includes: obtaining a model structure of an initial material composition having a predetermined geometry and dimensions; applying a slurry mixture into the model structure; and processing the model structure with the slurry mixture inside the model structure to convert the initial material composition of the model structure into a final material composition to obtain the target structure with the final material composition and having a geometry and dimensions that are substantially similar to the predetermined geometry and dimensions of the model structure.

    Airborne recovery of unmanned aerial vehicles

    公开(公告)号:US11820531B2

    公开(公告)日:2023-11-21

    申请号:US17455376

    申请日:2021-11-17

    CPC classification number: B64F1/029 B64C39/024 B64U70/30

    Abstract: Features for in-flight recovery of an unmanned aerial vehicle (UAV). A towline may be deployed by a host aircraft in-flight to recover an in-flight target UAV. The towline or portion thereof may be oriented nearly vertical. The towline may have a fitting thereon. A capture mechanism on the target UAV may have one or more deployable flaps that engage with the near vertical towline and fitting. The flaps may stow to secure the target aircraft to the towline and fitting. The host aircraft may then retract the towline to pull in the target UAV to the host aircraft using a hoist system having a winch. A latching system located in a pylon of the host aircraft, which may be under a wing, may have a towline connector that engages with and secures the target UAV. The host aircraft may have multiple hoist systems for deployment and/or recovery of multiple target UAV's.

    FAULT-TOLERANT FUEL ISOLATION FROM ENGINE FIREBAY

    公开(公告)号:US20230294511A1

    公开(公告)日:2023-09-21

    申请号:US18087635

    申请日:2022-12-22

    CPC classification number: B60K15/077 F02M37/0088 F02M37/106 F02M37/025

    Abstract: Fuel isolation systems, apparatuses and methods are described. In some embodiments, a system comprises a fuel tank, a fuel pump, an engine, a firewall, a fuel line from the fuel tank to the engine, a connector coupled inline with the fuel line on a cold side of the fuel line, a valve coupled to the connector, a fluid feed line coupled to a fluid source and to the valve. In the event of an engine fire condition, a control unit outputs signaling to turn off the fuel pump and operate the valve to introduce fluid from the fluid source into the fuel line. The introduced fluid provides a siphon break in the fuel line such that the only fuel that can pass the firewall is the remaining fuel in the fuel line downstream of the connector and the introduced fluid.

    AUTONOMOUS FLIGHT SAFETY SYSTEM
    100.
    发明申请

    公开(公告)号:US20230071617A1

    公开(公告)日:2023-03-09

    申请号:US17469024

    申请日:2021-09-08

    Abstract: The present disclosure describes autonomous flight safety systems (AFSSs) that incorporate an autonomous flight termination unit (AFTU) enabling AFSS monitoring for various termination conditions that are used to activate a flight termination system (e.g., in the event a termination condition is detected). Such termination conditions include boundary limit detection (e.g., whether a vehicle position is outside or projected outside a planned flight envelope), as well as body instability detection (e.g., whether a pitch rate and yaw rate exceed some threshold indicative of vehicle instability). For instance, an AFTU may incorporate a three-axis gyroscope sensor and may implement instability detection processing based on information obtained via the sensor. Instability detection processing may include, for example, a BID algorithm that may be implemented by an AFTU to monitor angular rates of the vehicle, to determine if the vehicle is no longer under stable control, and to issue termination commands when termination conditions are detected.

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