High Reynolds Number Hybrid Laminar Flow Control (Hlfc) Flight Experiment. Report 4; Suction System Design and Manufacture PDF Download

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High Reynolds Number Hybrid Laminar Flow Control (Hlfc) Flight Experiment. Report 4; Suction System Design and Manufacture

High Reynolds Number Hybrid Laminar Flow Control (Hlfc) Flight Experiment. Report 4; Suction System Design and Manufacture PDF Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721078301
Category :
Languages : en
Pages : 110

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Book Description
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