Abstract: In one or more embodiments, a disclosed method for cooling a vehicle involves routing, by a bypass line, boil-off of a cryogenic fuel of the vehicle past a cold plate to cool a subsystem mounted proximate the cold plate. The method further involves purging the boil-off in a direction away from the vehicle, after the boil-off passes the cold plate. In one or more embodiments, the cryogenic fuel involves liquid hydrogen (LH2), liquid oxygen (LO2), and/or liquid methane (LCH4). In at least one embodiment, the boil-off of the cryogenic fuel involves gaseous hydrogen (GH2), gaseous oxygen (GO2), and/or gaseous methane (GCH4). The vehicle is a space vehicle, an airborne vehicle, a terrestrial vehicle, or a marine vehicle. In at least one embodiment, the vehicle is a fuel cell vehicle (FCV).

Abstract: A wood post assembly for supporting signs or mail boxes is constructed entirely of wood parts without metal fasteners and without adhesives. It includes a post, cross beam and beam support member. A mortise runs through the post and the cross beam has a tenon extending through the post mortise. A first dowel pin extends through an aperture in the tenon and bears against the rear of the post. The support beam lies against the front face of the post with its upper end supporting the cross beam. A second dowel pin extends through axially aligned apertures drilled through the support member and post. The top surface of the support member has an inclined plane matching that of a recess formed in the lower surface of the cross beam.

Abstract: A nozzle ejection system having an outer nozzle, an inner nozzle located within the outer nozzle and a snap ring within the outer nozzle for holding the inner nozzle in place. An explosive charge is operatively connected to the snap ring, with the explosive charge detonating at a preselected time thereby either breaking or releasing the snap ring and allowing the inner nozzle to be ejected from the outer nozzle.