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Showing 1 to 11 of 11 for “"Hybrid Wing Body"”.
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Hybrid wing-body aircraft noise and performance assessment
Hybrid wing-body aircraft noise generation and boundary layer ingestion (BLI) performance trends with increased fan face Mach number inlet designs are investigated. The presented topics are in support of the NASA subsonic fixed wing project, which seeks to lower noise and increase performance by …
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Design and acoustic shielding prediction of hybrid wing-body aircraft
… in aircraft design have focused on the growing concerns about the environment impact of aviation and the rising costs of fuel. Under NASA's N+2 subsonics fixed-wing project, hybrid-wing-body (HWB) aircraft are investigated with the goal to meet the N+2 noise, fuel burn, and emissions …
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Control Power Optimization using Artificial Intelligence for Hybrid Wing Body Aircraft
… the control allocation optimization problem of Hybrid Wing Body (HWB) aircraft concepts for minimizing control power, hinge moments, and actuator forces, while keeping the system weights within acceptable limits. The main objective is to develop a proof-of-concept process suitable to demonstrate …
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Hydrogen powered hybrid wing body freighter systems analysis and conceptual design using the ACS tool
… a result a higher aircraft volume was needed. A Hybrid Wing Body was approximated in ACS because of the excess volume in that particular configuration. That made a HWB an attractive candidate for hydrogen fuel. The hydrogen candidate was scaled down to two additional sized to accomplish the …
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Control Power Optimization using Artificial Intelligence for Forward Swept Wing and Hybrid Wing Body Aircraft
Many futuristic aircraft such as the Hybrid Wing Body have numerous control surfaces that can result in large hinge moments, high actuation power demands, and large actuator forces/moments. Also, there is no unique relationship between control inputs and the aircraft response. Distinct sets of …
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Impact of Liquefied Natural Gas usage and payload size on Hybrid Wing Body aircraft fuel efficiency
This work assessed Hybrid Wing Body (HWB) aircraft in the context of Liquefied Natural Gas (LNG) fuel usage and payload/range scalability at three scales: H1 (B737), H2 (B787) and H3 (B777). The aircraft were optimized for reduced fuel burn and airframe noise at approach, based on NASA N+3 goals …
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Stereoscopic Particle Image Velocimetry Measurements of Swirl Distortion on a Full-Scale Turbofan Engine Inlet
… a swirl distortion that is representative for hybrid wing body applications and was made of Ultem*9085 using additive manufacturing. Additional improvements to the StreamVane method are also described. Data reduction algorithms are put forth to reduce spurious velocity vectors. Uncertainty …
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The Analysis and Prediction of Jet Flow and Jet Noise about Airframe Surfaces
… used to demonstrate the shielding effects of the Hybrid Wing Body (HWB) aircraft. The validation assessment shows that the acoustic analogy and tailored Green's function provided by the ray tracing method are capable of capturing jet shielding characteristics for multiple configurations and jet …
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A diffraction integral based turbomachinery noise shielding method
… assessment of turbomachinery noise shielding in hybrid wing body aircraft. The preliminary design and assessment of novel aircraft configurations require both low computational cost and versatility of the shielding method. High fidelity methods, such as for example boundary element methods, are …
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Comprehensive Multi-Scale Progressive Failure Analysis for Damage Arresting Advanced Aerospace Hybrid Structures
… to be implemented, enabling the feasibility of Hybrid Wing Body (HWB) aircraft. In addition to its unique fabrication process, the through-thickness stitching utilized by PRSEUS overcomes the low post-damage strength present in typical composites. Although many proof-of-concept tests have been …
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The power balance method For aerodynamic performance assessment
… and 3) performance quantification of a hybrid wing body (HWB) with BLI propulsion system. In the first application, an analytical expression for the form factor used in the wetted area method (a profile drag correlation employed in conceptual design, which is heavily based on empiricism) …