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Active Flow Control (AFC) and Insect Accretion and Mitigation (IAM) System Design and Integration on the Boeing 757 ecoDemonstrator

机译：波音757 ecoDemonstrator上的主动流控制（AFC）和昆虫积聚与缓解（IAM）系统设计与集成

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This paper presents a systems overview of how the Boeing and NASA team designed, analyzed, fabricated, and integrated the Active Flow Control (AFC) technology and Insect Accretion Mitigation (IAM) systems on the Boeing 757 ecoDemonstrator. The NASA Environmentally Responsible Aviation (ERA) project partnered with Boeing to demonstrate these two technology systems on a specially outfitted Boeing 757 ecoDemonstrator during the spring of 2015. The AFC system demonstrated attenuation of flow separation on a highly deflected rudder and increased the side force generated. This AFC system may enable a smaller vertical tail to provide the control authority needed in the event of an engine failure during takeoff while still operating in a conventional manner over the rest of the flight envelope. The AFC system consisted of ducting to obtain air from the Auxiliary Power Unit (APU), a control valve to modulate the system mass flow, a heat exchanger to lower the APU air temperature, and additional ducting to deliver the air to the AFC actuators located on the vertical tail. The IAM system demonstrated how to mitigate insect residue adhesion on a wing's leading edge. Something as small as insect residue on a leading edge can cause turbulent wedges that interrupt laminar flow, resulting in an increase in drag and fuel use. The IAM system consisted of NASA developed Engineered Surfaces (ES) which were thin aluminum sheet substrate panels with coatings applied to the exterior. These ES were installed on slats 8 and 9 on the right wing of the 757 ecoDemonstrator. They were designed to support panel removal and installation in one crew shift. Each slat accommodated 4 panels. Both the AFC and IAM flight test were the culmination of several years of development and produced valuable data for the advancement of modern aircraft designs.
机译：本文概述了波音和NASA团队如何在波音757 ecoDemonstrator上设计，分析，制造和集成主动流控制（AFC）技术和减毒减毒（IAM）系统的系统概述。美国国家航空航天局（NASA）的环境责任航空（ERA）项目与波音公司合作，于2015年春季在专门配备的波音757 ecoDemonstrator上演示了这两种技术系统。 。这种AFC系统可以使较小的垂直尾翼在起飞期间发生发动机故障的情况下提供所需的控制权限，同时在其余的飞行包线中仍以常规方式运行。 AFC系统包括用于从辅助动力装置（APU）获取空气的管道，用于调节系统质量流量的控制阀，用于降低APU空气温度的热交换器以及用于将空气输送到所位于的AFC执行器的附加管道。在垂直尾巴上。 IAM系统演示了如何减轻机翼前缘上的残留农药。前缘上的昆虫残留物之类的东西很小，会导致湍流楔形物中断层流，从而增加阻力和燃料消耗。 IAM系统由美国宇航局（NASA）开发的工程表面（ES）组成，该表面是薄铝板基板，外部涂有涂料。这些ES安装在757 ecoDemonstrator右翼的8号和9号板条上。它们的设计目的是在一班人员的陪同下支持面板的拆卸和安装。每个板条可容纳4个面板。 AFC和IAM飞行测试都是几年发展的高潮，并为推进现代飞机设计提供了宝贵的数据。

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