Aerospace Systems最新文献_第3页

Aerodynamic analysis of piper PA-24 aircraft using flighstream—a vorticity-based panel solver piper PA-24飞机的气流动力学分析-基于涡度的面板求解器

Aerospace Systems Pub Date : 2025-12-18 DOI: 10.1007/s42401-025-00428-z

Humesh Sanaboyina, Santosh Kumar Pradhan, G. Srinivas

{"title":"Aerodynamic analysis of piper PA-24 aircraft using flighstream—a vorticity-based panel solver","authors":"Humesh Sanaboyina, Santosh Kumar Pradhan, G. Srinivas","doi":"10.1007/s42401-025-00428-z","DOIUrl":"10.1007/s42401-025-00428-z","url":null,"abstract":"<div><p>The study deals with aerodynamic analysis of a general aviation aircraft Piper PA-24, a monoplane with low-wing configuration using FlightStream, a panel-method based vorticity solver. The present-day preliminary design phase requires a full-scale design analysis mainly to understand the design and aerodynamic performance in a fully integrated aircraft with all the external components attached to the aircraft. Unlike the discretised Navier–stokes equation-based solver, FlightStream uses potential flow Laplace equation to solve for the flow physics reducing the dependency on complex three-dimensional meshes for preliminary design stage analysis. The aircraft is predominantly analysed to observe the aerodynamic performance for angle of attacks varying from <span>(-4^circ )</span> to <span>(+20^circ )</span>, and validated with the available experimental data. The study also includes the grid independence check and thrust coefficient analysis to optimize the aerodynamic performance at cruising conditions. The findings will benefit aerospace engineers and researchers involved in aircraft design, aerodynamic optimization, and rapid preliminary analysis.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"9 1","pages":"167 - 184"},"PeriodicalIF":0.0,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147375316","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: 0

Non-contact ultrasonic diagnostics of aerospace anisotropic composites 航空航天各向异性复合材料的非接触超声诊断

Aerospace Systems Pub Date : 2025-12-12 DOI: 10.1007/s42401-025-00430-5

Olga Ermolenko, Evgeny Glushkov, Natalia Glushkova

引用次数: 0

Graphene solar-photon sail with Auger-like mechanism for sun-earth artificial halo family 具有类似俄歇机制的石墨烯太阳-光子帆，用于太阳-地球人造光晕家族

Aerospace Systems Pub Date : 2025-12-09 DOI: 10.1007/s42401-025-00427-0

He Liao, Chenxi Shi, Xiao Pan, Mingxuan Song

引用次数: 0

A machine learning framework for aerodynamic lift-to-drag ratio prediction of multi-stepped airfoils 多级翼型气动升阻比预测的机器学习框架

Aerospace Systems Pub Date : 2025-12-01 DOI: 10.1007/s42401-025-00422-5

Ahmed M. Elshewey, Mohamed A. Aziz, Shery Asaad Wahba Marzouk, Ahmed M. Elsayed, Hazem M. El-Bakry, Ahmed M. Osman

引用次数: 0

Combustion performance enhancement in rocket propulsion systems using nanoscale additives 利用纳米级添加剂增强火箭推进系统的燃烧性能

Aerospace Systems Pub Date : 2025-11-17 DOI: 10.1007/s42401-025-00423-4

Harikrishna Chavhan, Amit Kumar Thakur

{"title":"Combustion performance enhancement in rocket propulsion systems using nanoscale additives","authors":"Harikrishna Chavhan, Amit Kumar Thakur","doi":"10.1007/s42401-025-00423-4","DOIUrl":"10.1007/s42401-025-00423-4","url":null,"abstract":"<div><p>This comprehensive review paper endeavors to elucidate the recent advancements and innovations in the integration of nanometer energetic additives into composite solid propellants. The focus is on the utilization of nanometal energetic additives, including various metallic derivatives, which serve as catalytic burn rate modifiers and facilitate steady flow combustion processes. The proportion of additives and their peak high temperatures determine the feasibility of additive amounts and significantly impact the size scaling due to their high surface-to-volume ratios and reactive affinity. The paper scrutinizes various propellant samples fortified with nano-energetic additives and examines their effects on performance parameters such as burning rate or regression rate, reactivity, and the steady conduction of combustion over time. The nanometer size of additives enables even dispersion of the propellant, which directly influences diffusion distance, high flame temperature, and consequently, the thrust production capacity. In this discourse, different nanoscale additives and combinations with a variety of structure, shape, size, and thermochemical properties, which potentially enhance the regression rate and promote better thermal decomposition by lowering thermal decomposition temperature and activation energy. The paper primarily considers various combinations, including primarily transition metal and aluminum additives, along with multi-metallic compounds, and investigates reaction behaviors. These combinations possess variable properties and have demonstrated positive results over baseline materials. This research directly supports the affordable and clean energy a Sustainable Development by exploring ways to improve the performance and efficiency of hybrid and solid rocket propellants through nanoscale additives.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"9 3","pages":"453 - 478"},"PeriodicalIF":0.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871772","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: 0

Effects of propulsion type on the cruise aerodynamic performance and stability of electric vertical take-off and landing aircraft: a comparative study 推进类型对电动垂直起降飞机巡航气动性能和稳定性影响的比较研究

Aerospace Systems Pub Date : 2025-11-13 DOI: 10.1007/s42401-025-00421-6

Weiwei Liu, Xiaolu Wang, Jiahao Li, Daijun Liu, Mingqiang Luo

{"title":"Effects of propulsion type on the cruise aerodynamic performance and stability of electric vertical take-off and landing aircraft: a comparative study","authors":"Weiwei Liu, Xiaolu Wang, Jiahao Li, Daijun Liu, Mingqiang Luo","doi":"10.1007/s42401-025-00421-6","DOIUrl":"10.1007/s42401-025-00421-6","url":null,"abstract":"<div><p>With the rapid development of the low-altitude economy, electric Vertical Take-off and Landing (eVTOL) aircraft have emerged as a key focus of advanced air mobility. Open rotor and ducted fan configurations are the two primary types, but their distinct effects on aerodynamic performance and stability require thorough quantitative investigation. This study establishes a high-fidelity computational framework based on the Reynolds-Averaged Navier–Stokes (RANS) equations, incorporating eddy viscosity corrections and the Multiple Reference Frame (MRF) method to accurately resolve the interactional flow fields between the open rotor/ducted fan and the airframe. The results demonstrate that the open rotor configuration significantly enhances the cruise lift-to-drag ratio, thereby improving cruise efficiency. In contrast, the ducted fan configuration exhibits superior pitch and yaw static stability, especially under crosswind conditions. The ducted fan generates a nose-down pitching moment and contributes to improved directional stability. However, both configurations are found to compromise roll stability. Quantitatively, this study clarifies the complementary advantages of open rotor and ducted fan systems in terms of efficiency enhancement and stability performance, providing valuable insights for propulsion system selection and conceptual design of eVTOL aircraft.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"9 1","pages":"135 - 146"},"PeriodicalIF":0.0,"publicationDate":"2025-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147375280","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: 0

Aerodynamic performance enhancement of NACA 6412 airfoil with serrated trailing edges 具有锯齿形后缘的NACA 6412翼型气动性能增强

Aerospace Systems Pub Date : 2025-11-11 DOI: 10.1007/s42401-025-00417-2

Sayyed Samir, Rahul Kumar, Amit Kumar Thakur, Lovi Raj Gupta, Sudhanshu Dogra

引用次数: 0

Simplified method for predicting the system response time of satellite constellations 卫星星座系统响应时间预测的简化方法

Aerospace Systems Pub Date : 2025-11-06 DOI: 10.1007/s42401-025-00420-7

Lucas Scherberger, Frank Schäfer

{"title":"Simplified method for predicting the system response time of satellite constellations","authors":"Lucas Scherberger, Frank Schäfer","doi":"10.1007/s42401-025-00420-7","DOIUrl":"10.1007/s42401-025-00420-7","url":null,"abstract":"<div><p>A new method for estimating the system response time (SRT) of satellite constellations is proposed. The presented method computes the access time intervals for each satellite in a satellite constellation to every ground station in the network and target. When analyzing the SRT from global targets this method significantly simplifies the computational process. The spatial dimension of the computational problem is reduced by using a Monte Carlo simulation for the observation targets. The temporal dimension is simplified by discretizing the chosen simulation interval into equally spaced time points. This makes our approach efficient for calculating the SRT on global targets. Based on these access intervals, the SRT is calculated for each discretized time point and target. Averaging the SRT over the time points extracts time-independent information. This yields meaningful metrics such as the average, minimum, and maximum SRTs of the targets. Combining these metrics with a visualization on a world map allows for a quick understanding of the strengths and weaknesses of the constellation with respect to SRT. We demonstrate this method using multiple scenarios ranging from a single satellite and ground station to larger constellations and ground station networks. Investigating the SRT as a function of target latitude [<span>(-90^{circ })</span>, <span>(90^{circ })</span>] reveals that it peaks at the equator and drops towards the poles. The specifics of this curve depend on the number and design of both the satellite constellation and the ground station network.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"9 3","pages":"497 - 509"},"PeriodicalIF":0.0,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42401-025-00420-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of jet configuration and swirl on mixing characteristics in confined multi-annular swirling flows 射流构型和旋流对受限多环旋流混合特性的影响

Aerospace Systems Pub Date : 2025-11-05 DOI: 10.1007/s42401-025-00409-2

Ritesh Srivastava, Vivek Kumar Patel

{"title":"Effect of jet configuration and swirl on mixing characteristics in confined multi-annular swirling flows","authors":"Ritesh Srivastava, Vivek Kumar Patel","doi":"10.1007/s42401-025-00409-2","DOIUrl":"10.1007/s42401-025-00409-2","url":null,"abstract":"<div><p>Efficient air–fuel mixing is essential for achieving stable combustion, reducing emissions, and enhancing the overall performance of gas turbine combustors. This study provides a detailed computational investigation of swirling air jet mixing in confined geometries, with direct relevance to air–fuel mixing processes in gas turbine applications. The simulations employed the realizable <i>k–ε</i> turbulence model and were validated against existing experimental data, showing strong agreement. Computational investigations were performed using ANSYS Fluent in enclosures of fixed length but varying diameter, achieved by progressively introducing annular jets to form multi-annular configurations comprising 2 to 6 jets. While the central jet is conceptualized as a fuel jet and the surrounding annular jets as air, all jets are modelled as air to isolate the fundamental mixing behaviour. The introduction of additional annular jets increases the total mass flow rate, significantly influencing internal flow structures. Clear signs of improved mixing were seen in the significant increase in the central recirculation zone (CRZ) and the corresponding decrease in centreline axial velocity. To gain deeper insight into the flow behavior, each set of jet’s configurations was investigated using two different swirl intensity combinations. Findings indicated that a greater difference in swirl strength enhanced the formation of the central recirculation zone (CRZ) and reduced axial velocities along the centerline, suggesting more effective interaction and mixing between the jets.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"9 1","pages":"105 - 114"},"PeriodicalIF":0.0,"publicationDate":"2025-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147375279","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: 0

Knowledge graph reasoning: learning long-path fault prioritization from aircraft maintenance records 知识图推理：从飞机维修记录中学习长路径故障优先级

Aerospace Systems Pub Date : 2025-10-22 DOI: 10.1007/s42401-025-00412-7

Kong Sun, Huanchun Peng, Yuxuan Zhang, Zhi Lv, Yongsheng Yang, Yuanxiang Li

{"title":"Knowledge graph reasoning: learning long-path fault prioritization from aircraft maintenance records","authors":"Kong Sun, Huanchun Peng, Yuxuan Zhang, Zhi Lv, Yongsheng Yang, Yuanxiang Li","doi":"10.1007/s42401-025-00412-7","DOIUrl":"10.1007/s42401-025-00412-7","url":null,"abstract":"<div><p>The integration of robust fault diagnosis technologies into complex civil aircraft systems plays a pivotal role in enhancing flight safety and ensuring system reliability. However, current data-driven and knowledge-driven approaches to aircraft fault diagnosis still struggle to effectively handle long-path reasoning in knowledge graph-based inference. To address this limitation, this paper proposes Pathformer, a novel multi-path representation learning model that learns fault path priorities from maintenance records. First, we establish a maintenance record matching model to associate key entities in fault paths with their corresponding maintenance records. Next, we introduce a fault path confidence construction method that prioritizes troubleshooting paths by analyzing key entities within each path. This process is further refined through a training loss function that incorporates path confidence derived from historical maintenance records. Finally, we develop Pathformer to efficiently encode and rank long diagnostic paths. Experimental evaluations on a self-constructed fault knowledge graph covering four typical civil aircraft systems demonstrate the model’s superior path reasoning capabilities, achieving significant improvements over existing path reasoning approaches.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"9 2","pages":"235 - 248"},"PeriodicalIF":0.0,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261999","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: 0