Smaaart task order SOW - refined AFC-enabled high-lift system integration study 1.0 introduction/background: the NASA fixed wing (FW) project is seeking to demonstrate the potential benefits of…

Smaaart task order SOW - refined AFC-enabled high-lift system integration study 1.0 introduction/background: the NASA fixed wing (FW) project is seeking to demonstrate the potential benefits of reducing complexities associated with a modern high-lift system for low-speed flight conditions representative of takeoff and landing without sacrificing aerodynamic or acoustic performance. One promising approach is to use active flow control (AFC) to provide the required high-lift performance while reducing the system part count and associated external drag. NASA is seeking to explore and evaluate AFC-enabled high-lift systems within the framework of the FW project goals regarding noise and fuel burn reductions of a modern civil transport aircraft. Modern high-lift systems are designed to allow a transport aircraft with typical transonic cruise speeds to safely operate at slow speeds for landing and takeoff operations. The high-lift system is usually slotted both on the leading edge and the trailing edge of the wing to take advantage of the aerodynamic properties of slotted flows and achieve the necessary high lift performance. The slotted leading and trailing edge devices, and the associated sub-systems necessary to change the wing configuration from cruise to low-speed, are complex and employ a significant number of parts to enable safe operation. In addition, these complex mechanical high-lift systems often protrude externally under the wings and require external fairings that result in increased cruise drag. This task order builds upon work completed under contract/task order NNL10AA05B/ NNL13AB65T) entitled AFC-enabled high-lift system integration study, where a systems benefit study was performed on three candidate AFC-enabled simplified high-lift systems for modern civil transports. For this task order, a refined conventional high-lift system based on the NASA common research model (CRM) will be used as the baseline for comparison purpose. This updated baseline will have improved stall characteristics for landing, acceptable lift/drag (l/d) performance for takeoff, and integrated nacelle/pylon in addition to the wing-only option developed under smaaart task order # NNL13AB65T. 2.0 scope & objective(s): 2.1 the scope of this task order is to explore new design space in order to close the technology GAP identified for the mass flow requirement as applied to a refined AFC-enabled high-lift system. 2.2 the objective(s) of this task order are to: use refined computational fluid dynamics (CFD)-based analysis to close the critical technology GAP identified for the mass flow and pressure requirements. perform system-level trade study to determine whether AFC yields a closed design. identify technical challenges associated with the integration of an AFC system. 3.0 description of the work/tasks to be performed: the contractor shall perform the following tasks: 3.1 refine conventional baseline high-lift configuration 3.1.1 using the NASA CRM geometry as a starting point, the contractor shall deliver a draft refined baseline conventional high-lift design for technical point of contact (tech POC) for approval. (deliverable item 4.3). The tech POC will provide written approval via email to the contractor with a copy to the contracting officer within 7 calendar days of receipt. This refined baseline conventional high-lift configuration shall be representative of a modern in-service commercial transport aircraft. This includes high lift stall characteristics representative of current production transonic transport aircraft, and a nacelle/pylon/wing integration that avoids having separated flow over the nacelle adversely impacting the CRM high-lift performance. 3.1.2 the contractor shall deliver the final refined baseline geometry for the conventional high lift system as initial graphics exchange specification (iges) FIL