High Reynolds Number Hybrid Laminar Flow Control Hlfc Flight Experiment Report 4 Suction System Design And Manufacture

Download or read book High Reynolds Number Hybrid Laminar Flow Control (Hlfc) Flight Experiment. Report 4; Suction System Design and Manufacture written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-12 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document describes the design of the leading edge suction system for flight demonstration of hybrid laminar flow control on the Boeing 757 airplane. The exterior pressures on the wing surface and the required suction quantity and distribution were determined in previous work. A system consisting of porous skin, sub-surface spanwise passages ("flutes"), pressure regulating screens and valves, collection fittings, ducts and a turbocompressor was defined to provide the required suction flow. Provisions were also made for flexible control of suction distribution and quantity for HLFC research purposes. Analysis methods for determining pressure drops and flow for transpiration heating for thermal anti-icing are defined. The control scheme used to observe and modulate suction distribution in flight is described. Langley Research Center NAS1-18574; RTOP 522-32-31-01