Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.)最新文献_第3页

Data-Driven Reduced Order Control for Partially Observed Fluid Systems 部分观测流体系统的数据驱动降阶控制

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-1813

P. Sashittal, D. Bodony

引用次数: 0

Correction: A Preliminary Study on Transonic Shock Tube Airfoil Flows with Gurney Flap by utilizing PDI 修正:利用PDI对带轮尼襟翼的跨声速激波管翼型流动的初步研究

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-1356.c1

M. Kashitani, M. Taguchi, N. T. Duong, A. Oomori, M. Nishiyama, H. Tanno

引用次数: 0

Mechanics-Based Modeling Approach for Rapid Prediction of Low Velocity Impact Damage in Composite Laminates 基于力学的复合材料层合板低速冲击损伤快速预测建模方法

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-0726

L. Borkowski, R. Kumar, U. Palliyaguru

{"title":"Mechanics-Based Modeling Approach for Rapid Prediction of Low Velocity Impact Damage in Composite Laminates","authors":"L. Borkowski, R. Kumar, U. Palliyaguru","doi":"10.2514/6.2020-0726","DOIUrl":"https://doi.org/10.2514/6.2020-0726","url":null,"abstract":"A mechanics-based modeling approach is developed to rapidly predict damage in polymer matrix composites resulting from a low velocity impact event. The approach is incorporated into a computer code that provides an efficient means to assess the damage resistance for a range of material systems, layup configurations, and impact scenarios. It is envisioned that the developed approach will aid in early design and analysis of composite structures where sizing and layup decisions must be made, and evaluating the feasibility of a large number of laminate configurations using numerical approaches such as finite element analysis (FEA) is prohibitively expensive. Therefore, the goal of the modeling approach is to predict the impact damage size given the laminate configuration and impact scenario. This information can then be used to determine the residual strength of the material. To be useful in such a context, the tool is designed to run quickly (<2 minutes) to allow a large number of design cases to be investigated. The results presented demonstrate that the model is capable of efficiently predicting low velocity impact damage size, shape, and location within an acceptable accuracy suitable for preliminary design and analysis of composite structures.","PeriodicalId":93413,"journal":{"name":"Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.)","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90759215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis of Automatic Control Function Effects on Vertical Tail Plane Critical Load Conditions 自动控制功能对垂直尾翼临界载荷工况的影响分析

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-1621

T. Kier, R. Muller, G. Looye

{"title":"Analysis of Automatic Control Function Effects on Vertical Tail Plane Critical Load Conditions","authors":"T. Kier, R. Muller, G. Looye","doi":"10.2514/6.2020-1621","DOIUrl":"https://doi.org/10.2514/6.2020-1621","url":null,"abstract":"This paper presents a modelling scheme suitable for loads analysis of maneuvers and gusts of flexible aircraft with active control systems. In contrast to most ongoing research the component to be investigated is not the wing but the vertical tail plane (VTP). Critical load conditions for vertical tail plane include yawing maneuver conditions as well as discrete lateral gusts. A new rudder reversal load condition features a three full reversals of the rudder pedal input instead of just one step input and amere return to neutral. This condition, where resulting loads are considered ultimate, was mainly motivated by wake vortex encounters during which the pilots made excessive use of the rudder. The design loads resulting from all conditions are heavily influenced by the flight control system, the underlying control law design method, and associated control law parameters. This gives rise to interesting trade-offs between handling qualities and loads sizing the VTP structure. Therefore, in this paper the influence of different types of lateral control laws on the loads of the different gust and maneuver conditions for certification as specified by the authorities is analysed. The control laws considered vary from basic yaw damping with rudder travel limitation to full roll and yaw command augmentation systems. From a design methodology point of view, classical and (incremental) Nonlinear Dynamic Inversion-based methods are analysed.","PeriodicalId":93413,"journal":{"name":"Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89906583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Supersonic Technology Concept Aeroplanes for Environmental Studies 用于环境研究的超音速技术概念飞机

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-0263

J. Berton, D. Huff, K. Geiselhart, J. Seidel

{"title":"Supersonic Technology Concept Aeroplanes for Environmental Studies","authors":"J. Berton, D. Huff, K. Geiselhart, J. Seidel","doi":"10.2514/6.2020-0263","DOIUrl":"https://doi.org/10.2514/6.2020-0263","url":null,"abstract":"The International Civil Aviation Organization is considering new environmental standards for future supersonic civil aircraft. NASA is supporting this effort by analyzing several notional, near-term supersonic transports. NASA’s performance, noise, and exhaust emission predictions for these transports are being used to inform a larger study that will determine the global environmental and economic impact of adding supersonic aircraft to the fleet beginning this decade. A supersonic business jet with a maximum takeoff gross weight of 55 tonnes is the focus of this paper. A smaller business jet weighing 45 tonnes is also discussed. Both airplanes use supersonic engines derived from a common contemporary commercial subsonic turbofan core. Aircraft performance, airport-vicinity noise, and exhaust emissions are predicted using NASA tools. Also investigated are some of the anticipated behaviors and requirements of these aircraft in the commercial airspace. The sensitivity of noise to system uncertainties is presented and alternative engine studies are discussed.","PeriodicalId":93413,"journal":{"name":"Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.)","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74916203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30

Aerodynamic Performance of the 2018 InSight Mars Lander 2018年洞察号火星着陆器的空气动力学性能

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-1272

A. Korzun, R. Maddock, M. Schoenenberger, K. Edquist, C. Zumwalt, C. Karlgaard

引用次数: 5

Fuel and Operating Condition Effects on Lean Blowout in a Swirl-Stabilized Single-Cup Combustor 燃料和工况对旋流稳定单杯燃烧器贫爆的影响

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-1883

Jennifer G. Colborn, Joshua S. Heyne, Tyler H. Hendershott, S. Stouffer, Erin Peiffer, E. Corporan

引用次数: 7

Simulating a Vortex-Driven Cloud Feature on Uranus 模拟天王星上旋涡驱动的云特征

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-0143

Kevin Farmer

引用次数: 0

RANS and LES Simulation of a Mach 7 Axisymmetric Flare Interaction 7马赫轴对称耀斑相互作用的RANS和LES模拟

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-1331

Cyrus Jordan, G. Buss, J. Edwards, D. Stefanski

引用次数: 4

Performance Analysis of a Team of Highly Capable Individual Unmanned Aerial Systems 高性能单兵无人机系统的性能分析

Applied aerodynamics : papers presented at the AIAA SciTech Forum and Exposition 2020 : Orlando, Florida, USA, 6-10 January 2020. AIAA SciTech Forum and Exposition (2020 : Orlando, Fla.) Pub Date : 2020-01-06 DOI: 10.2514/6.2020-2070

Rajnish Bhusal, B. Taner, K. Subbarao

引用次数: 1