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Aerospace & Defense Technology: February 2024

Certified Machine Learning-Based Avionics: Unlocking Safer Revolutionizing Electronic Warfare: Unleashing the Power of High-Performance Software Defined Radios Deterministic and Modular Architecture for Embedded Vehicle Systems Approximating the Material Stresses and System Requirements for Hypersonic Flight Design Approaches for Established and Emerging RF Receiver Architectures Rydberg Technologies Shows Potential of Long-Range RF with Quantum Sensor at NetModX23 New Method to Measure Wind Speed Could Unlock Drones' Potential A fundamentally different approach to wind estimation using unmanned aircraft than the vast majority of existing methods. This method uses no on-board flow sensor and does not attempt to estimate thrust or drag forces. Report on Human Factors Issues Likely to Affect Air-Launched Effects This report reviews human factors research on the supervision of multiple unmanned vehicles (UVs) as it affects human integration with Air-Launched Effects (ALE).

Aerospace & Defense Technology: December 2023

How Distributed Metal Additive Manufacturing Can Add a Surge to Military Supplier Strategies Ensure Aerospace Composite Quality with Force Measurement, Material Testing How Business Networks Can Help Stabilize the A&D Supply Chain A blueprint for modernizing the supply chain for greater connectedness and collaboration. Unlocking the Potential of 3D-Printed Polymers in Aerospace and Defense How to Select the Right Silicone for Space Applications Key Measurements to Maintain Performance of Critical Electronic Systems on Military Aircraft and Warships Physicists Develop a New Type of Antenna Towards Sustainable Recycling of Epoxy-Based Polymers: Approaches and Challenges of Epoxy Biodegradation Composites are especially important for the development and implementation of sustainable technologies such as wind power, energy-efficient aircrafts, and electric cars.

Charles M. Manly Memorial Medal - Participate - SAE International

Established in 1928, this award annually recognizes the author(s) of the best paper(s) relating to theory or practice in the design or construction of, or research on, aerospace engines, their parts, components, or accessories at a meeting of the Society or its sections during the calendar year. Manly served as SAE President in 1919 and following his death, many of his associates formed a committee to establish a memorial as a lasting tribute to his work in aeronautic engineering.

General Requirements for Hydraulic System Reservoirs

This SAE Aerospace Standard (AS) specifies the general requirements for hydraulic system reservoirs that are installed in commercial and military aircraft and helicopters and also in missile hydraulic systems.This document includes design, test (production and qualification) criteria for various types of reservoirs.
Technical Paper

Icing Qualification Wind Tunnel Test of Helicopter Engine with Inlet Barrier Filter Air Intake

Icing wind tunnel testing was performed as part of the Republic of Korea certification of the Light Civil Helicopter (LCH) for inadvertent flight in icing conditions. The test was aimed at the compliance demonstration of the engine and air intake with dry-media Inlet Barrier Filter (IBF) and was performed with an Arriel 2C2 engine in turbojet configuration. ...Testing took place at the sea level ambient pressure Large Climatic Wind Tunnel (CWT) at Rail Tec Arsenal (RTA) in Vienna, Austria, by an integrated test team comprising engineers from the Royal Netherlands Aerospace Centre (NLR), Korea Aerospace Industries (KAI), and Safran Helicopter Engines. The test matrix covered the AC29-2C Appendix C 10,000 ft icing envelope, as well as simulated ground icing conditions, considering both a clean and artificially contaminated IBF.
Technical Paper

Ice Protection System Design for the Next Generation Civil Tiltrotor Engine Intake

This paper focuses on the design of the thermoelectric ice protection system (IPS) for the engine air intake of the Next Generation Civil Tiltrotor (NGCTR), a demonstrator under development in Leonardo Helicopters. A specific IPS design strategy for the novel intake configuration is proposed. The main constraint which driven the design strategy is a maximum power of 10.6 kW available for the full intake IPS system.
Technical Paper

Predicting the Collection Efficiency on a Generic Rotor Blade with a Three-Dimensional Eulerian Particle Solver

Ice accretion on helicopter rotor blades when flying through supercooled droplet clouds can severely affect aerodynamic properties and pose a significant threat to flight safety. ...These findings highlight the importance of using full 3D simulations for accurate prediction of ice accretion on helicopter rotor blades and can aid in the development of improved design strategies for safe helicopter operations under icing conditions. ...These findings highlight the importance of using full 3D simulations for accurate prediction of ice accretion on helicopter rotor blades and can aid in the development of improved design strategies for safe helicopter operations under icing conditions.
Journal Article

Three Case Studies on Small Uncrewed Aerial Systems Near Midair Collisions with Aircraft: An Evidence-Based Approach for Using Objective Uncrewed Aerial Systems Detection Technology

Using the data, three NMAC case studies are presented based on three varying mission profiles: (a) commercial air carriers, (b) general aviation (GA) aircraft, and (c) helicopters. The findings inform on sUAS-aircraft encounter evolution and trends, including areas of encounter risk, lateral and vertical encounter separation distances, sUAS operator compliance with operational and altitude restrictions, and comparisons of objective detection data against sUAS sighting reports.