Analysis of Defence Line Weaving for Safety Guidance Strips and Land Aircraft Safety and Communication

Construction and Regulatory Framework of Wing-In-Ground Effect (WIG) Craft from the Perspective of Safety and High-Speed Craft Classification

Wing-In-Ground (WIG) effect craft represent a compelling high-speed maritime transportation solution for archipelagic nations, yet their global adoption remains constrained by fragmented regulatory frameworks and the absence of nationally adapted construction standards. This study proposes a national regulatory and construction framework for WIG craft tailored to Indonesia's tropical archipelagic conditions, using a systematic mapping study of 32 peer-reviewed and regulatory sources retrieved from Scopus, Web of Science, IEEE Xplore, and ScienceDirect following PRISMA 2020 guidelines. The results establish three key contributions. First, a three-tier classification system (Type A: exclusive ground effect; Type B: transitional capability; Type C: full aircraft mode) is proposed to facilitate phased adoption with progressively stringent certification requirements. Second, a hybrid material strategy combining marine-grade aluminum alloys (hull) with Carbon Fiber Reinforced Polymer (wings and stabilizers) is validated as optimal for tropical corrosion resistance and weight efficiency, with potential payload improvements of 30–40% over all-aluminum designs. Third, a redundant propulsion architecture with multi-stage Foreign Object Damage (FOD) filtration achieving ≥95% particulate removal efficiency is established as mandatory for safe operations in Indonesia's littoral environment. Operational analysis of the Java Sea demonstrates that Type A WIG craft could achieve approximately 80% annual uptime, reducing the Surabaya–Bawean transit from 3–4 hours to 45–60 minutes. This framework addresses the legal vacuum created by the absence of national WIG regulations and provides a replicable model for other tropical archipelagic nations.

Wheels-Up Landing and Its Relevance to Novel Aircraft

The National Transport Safety Board found that Wheels-Up Landing was the second highest defining event for aircraft accidents from 2008 to 2022. The increasing push for sustainable propulsion and accompanying novel airframe architectures present new integration and safety challenges for aircraft design and development, among which is the structural integrity and crashworthiness of the aircraft under such extreme events. This paper examines the regulations and design requirements governing aircraft emergency Wheels-Up Landing scenarios, emphasising their implications for aircraft safety and structural integrity. It consolidates standards from aviation authorities, such as the FAA and EASA, which identify and define key requirements relating to occupant safety and fire prevention and protection during such events. The paper then considers the Wheels-Up Landing scenario and its design requirements within the context of future novel aircraft employing sustainable propulsion systems, from higher bypass turbofan to electric- and hydrogen-based technologies. The unique characteristics and challenges of these emerging propulsion technologies are described, highlighting how alternative structural configurations, weight distributions and powerplant architectures may influence the aircraft response under a Wheels-Up Landing event. Finally, an exploration of predictive modelling strategies and methods currently used in Wheels-Up Landing analysis was conducted. While reviewing the breadth of accurate, high-fidelity modelling methods targeting fuselage impact, it also highlighted the gap in both considering the increasingly relevant and frequent powerplant impact scenarios, and the provision of lightweight modelling approaches necessary to rapidly and adequately address the emergency Wheels-Up Landing response early in the aircraft design process.

Ship-to-Shore Interconnection for Yacht Passenger Safety

In this article, we present a ship-to-shore interconnection system aimed at supporting real-time monitoring of Yacht crew and passenger health. The system leverages broadband interconnection services provided by Low Earth Orbit (LEO) satellite systems and is composed of two software components. The first component is responsible for the acquisition of parameters describing both the health and safety conditions of passengers (e.g., blood pressure, heart rate, body temperature, movement, and disease-specific parameters for conditions such as diabetes) and the navigation conditions of the vessel (e.g., wind intensity, sea state, speed, response to wave motion, heel, and heading). The second component is a platform for tabular data synchronization. Rather than relying on a custom-designed software application, which would be inherently rigid or only limitedly configurable, the proposed solution exploits the ability of operators to develop application logic using spreadsheet-based tools. The synchronization platform ensures continuous consistency between onboard data and the spreadsheets used by the operators at the shore-based centers.

Determine the navigation safety of the S-175 ship using predicted wave parameters

Discussion of Key Technologies on Application of High-Payload Ducted Fan Aircraft

Against the backdrop of accelerating urbanization and diversifying social demands, aerospace technology has extensively permeated numerous fields such as logistics and transportation, emergency and disaster relief, environmental monitoring, and urban transportation. Its application scope is expanding from traditional reconnaissance and surveillance to complex scenarios like material transportation, manned operations, and precision maintenance. Within this trend, high-payload, vertical take-off and landing (VTOL), and high-safety aircraft have become key equipment for enhancing operational efficiency across multiple sectors. Among these, high-payload ducted fan aircraft, with their high safety, excellent low-speed performance, and outstanding VTOL capability, demonstrate unique advantages in tall building fire suppression, power lines and towers maintenance, and personal flight experiences. This paper first outlines the diversified application prospects of aerospace technology, then focuses on high-payload ducted fan aircraft. It discusses the technical requirements specific to such aircraft in the aforementioned key scenarios and analyzes the critical technical bottlenecks hindering their broader application, along with potential viable solutions.

Offshore wind development and aviation operations

This paper aims to examine the effects of planned offshore wind energy developments in the eastern Baltic Sea on civil aviation safety, airspace structure and flight operations and identifies conditions for their safe coexistence. The study synthesises four independent aviation impact assessments conducted for offshore wind farm development areas along the Estonian coastline. A shared methodological framework was used, combining stakeholder consultations, geographical overlay analysis of wind farm layouts with aviation airspace structures and a structured impact matrix in accordance with the International Civil Aviation Organisation and European Union Aviation Safety Agency principles. Aviation impacts vary according to turbine height, spatial configuration, proximity to aerodromes and flight procedures. Wind farms located within aerodrome sector altitude determination areas may require increases in minimum altitudes and redesign of instrument procedures, while more distant developments have minimal effects. Visual flight operations and search and rescue and medical evacuation flights are more sensitive to turbine installations than routine instrument operations. Impacts on communication, navigation and surveillance systems are generally localised and minor and wake turbulence effects are moderate and manageable. Offshore wind energy projects and aviation operations can coexist safely when comprehensive pre-construction aviation impact assessments are conducted, turbine placement considers aerodrome procedures and mitigation measures such as aeronautical information publication and procedural adaptation are implemented. To the best of the authors’ knowledge, the paper offers the first integrated synthesis of four independent Eastern Baltic Sea offshore wind aviation assessments, identifying recurring impact patterns and providing a unified regional perspective not available in the original reports.