Abstract: An illustrative example embodiment of an elevator counterweight includes a frameless stack of a plurality of weights that are connected to maintain a vertical and horizontal alignment of the weights. A plurality of guides are directly supported on at least some of the weights. The plurality of guides are configured to guide movement of the counterweight along elevator guide rails.

Abstract: An illustrative example embodiment of an elevator counterweight includes a frameless stack of a plurality of weights that are connected to maintain a vertical and horizontal alignment of the weights. A plurality of guides are directly supported on at least some of the weights. The plurality of guides are configured to guide movement of the counterweight along elevator guide rails.

Abstract: A mixer has an internal bore with an inlet to a chamber, and an outlet at an opposed end/A duct is connected to receive a recirculated air flow. The duct communicates air into the chamber through recirculating air ports such that the recirculating air can mix with the air from the inlet. The mixer housing has a cockpit outlet for delivering air to a second outlet, with the cockpit output being located axially upstream from the recirculating air ports. An isolator is mounted at an outer periphery of the mixer housing, and has flat sides on each of two circumferentially spaced sides. A belly band is bolted to an outer periphery of the mixer housing and to flat sides of the isolator.

Abstract: A primary heat exchanger for use in an environmental control system of an aircraft is provided having a rectangular core. The core includes a plurality of alternately stacked first fluid layers and second fluid layers. The core has a length to width ratio of about 4.88 and a width to height ratio of about 2.37. A first header is positioned adjacent a first surface of the core and a second header is positioned adjacent a second opposite surface of the core. The first header and the second header form a portion of a flow path for a first fluid. An inlet flange is positioned adjacent a third surface of the core. An outlet flange is positioned adjacent a fourth, opposite surface of the core to form a portion of a flow path for a second fluid.

Abstract: A primary heat exchanger for use in an environmental control system of an aircraft is provided having a rectangular core. The core includes a plurality of alternately stacked first fluid layers and second fluid layers. The core has a length to width ratio of about 4.88 and a width to height ratio of about 2.37. A first header is positioned adjacent a first surface of the core and a second header is positioned adjacent a second opposite surface of the core. The first header and the second header form a portion of a flow path for a first fluid. An inlet flange is positioned adjacent a third surface of the core. An outlet flange is positioned adjacent a fourth, opposite surface of the core to form a portion of a flow path for a second fluid.