Abstract: An aircraft propulsive power unit comprises an engine, a nacelle structure which houses the engine and which includes displaceable nacelle portions which form a forward part of the nacelle structure and which take up operational positions in which a forward end of each nacelle portion forms part of an intake opening which leads to an intake barrel which is located upstream of the engine for the supply of intake air to the engine and which is secured to a forward component of the engine. Each displaceable nacelle portion includes a lipskin structure which has rearwardly extending outer and inner lipskin edge portions, and further includes an outer main skin.

Abstract: A secondary light sensitive photoelectric product separator for use with a primary product separator that concentrates a material so that it is visually distinguishable from adjacent materials. The concentrate separation is accomplished first by feeding the material onto a vibratory inclined surface with a liquid flow, such as a wet concentrating table. Vibrations generally perpendicular to the stream direction of flow cause the concentrate to separate from its mixture according to its color. When the concentrate and its surrounding stream reach the recovery end of the table, a detecting device notes the line of color demarcation and triggers a signal if it differs from a normal condition. If no difference is noted nothing moves on the second separator. However, if a difference is detected in the constant monitoring of the color line's location, a product splitter and recovery unit normally positioned near the color line at the recovery end, moves to a new position.