Lockheed Martin Corporation

Matthew M Kapelanczyk

Yongdan Hu

Corey Adam Fleischer

John Ditri

John J Morber

Greg W Klein

David Velasco

Nancy E Wasson

Kristopher Thomas Heick

Christina M Gallo

A receiver used in a solar collection assembly includes a tube adapted to carry a heat transfer medium therethrough. An envelope surrounds the tube and has opposed ends and a diaphragm is interposed between each end and the tube to support the tube from the envelope. The diaphragm comprises radially oriented convolutions which minimizes the axial length of the diaphragm and hence reduces shading of the absorber tube.

Solar receiver diaphragm

A solar receiver assembly includes a tube adapted to carry a heat transfer medium and a glass envelope surrounding the tube and having opposed ends. An interface is disposed between each end and the tube so as to seal and support the tube from the envelope. And the receiver includes a prism disposed over the interface to divert incident radiation away from the interface and toward the tube and/or the glass envelope. The prisms may be provided with reflective and/or anti-reflective coatings to further optimize diversion of radiation from the interface.

Prism shields for a parabolic trough solar collector

A crew transfer system for transferring personnel from a vessel to a stationary platform, such as an oil rig, is disclosed. In the illustrative embodiment, the system includes a ramp that is coupled to the vessel and an interface that is attached to the stationary platform. The ramp is coupled to the vessel in such a way as to permit one translational and three rotational degrees of freedom at the vessel-end of the ramp. The ramp is coupled to the interface in such a way as to permit no translational and at least one rotational degree-of-freedom at the rig-end of the ramp with respect to the interface. The interface is rotatably coupled to the stationary platform in such a way as to permit a rotation of the interface about the yaw axis. Permitted rotation of the interface enables a range of acceptable angles of orientation between the vessel and the platform.

Rotating gangway support platform

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Baltimore, MD, United States of America

Matthew M Kapelanczyk