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Automatic Dependent Surveillance Broadcast (ADS-B) [1] is a technology that can be viewed either as a complement or as an alternative to current radar-based surveillance techniques. ...Despite its many benefits, this technology suffers from the security flaw of having its messages sent as clear text broadcasts, which makes it vulnerable to several kinds of attacks affecting the authenticity and integrity of ADS-b messages - a problem we addressed with a security framework presented in previous work [2]. ...In this paper, we propose to enhance that initial work by using keyed-hash message authentication code [3] (HMAC) to ensure the authenticity and integrity of ADS-B messages. The proposed improvements include changing the structure of the security-related data and, more importantly, adding a cognitive risk adaptive module.

Airborne Inspection Sensor Evolves with LiDAR, Mid-IR and Artificial Intelligence Air Force eVTOL Research and Development Programs Make Remote Pilot Progress Creating a Digital Gateway for RF Domain Will Advance Designs That Meet DoD Initiatives Understanding the Unique RF Interconnect Requirements for Ultra-Demanding Hypersonic Missile and Satellite Applications ADS-B Classification Using Multivariate Long Short-Term Memory This analysis extends previous research that used long short-term memory-fully convolutional networks to identify aircraft engine types from publicly available automatic dependent surveillance-broadcast (ADS-B) data. ...Airborne Inspection Sensor Evolves with LiDAR, Mid-IR and Artificial Intelligence Air Force eVTOL Research and Development Programs Make Remote Pilot Progress Creating a Digital Gateway for RF Domain Will Advance Designs That Meet DoD Initiatives Understanding the Unique RF Interconnect Requirements for Ultra-Demanding Hypersonic Missile and Satellite Applications ADS-B Classification Using Multivariate Long Short-Term Memory This analysis extends previous research that used long short-term memory-fully convolutional networks to identify aircraft engine types from publicly available automatic dependent surveillance-broadcast (ADS-B) data. Physics-Guided Neural Network for Regularization and Learning Unbalanced Data Sets Directed energy deposition is of interest to the aerospace and defense industries for the production of novel and complex geometries, as well as repair applications.

Finally, a trajectory position prediction error model is built using actual ADS-B data to verify the performance of this improved algorithm for application in the no route change scenario and the multi-route scenario.

., towers or buildings) even though they may be equipped with an ADS-B transmitter.

In addition, the traffic indications were considered to be consistent with actual traffic locations, and the timing of the runway indications was considered appropriate. ADS-B signal loss anomalies due to line-of-sight blockage and multi-path reflections were also observed and noted by pilots.

Weather information presented to the pilot in the cockpit is obtained either from an onboard weather radar on larger commercial aircrafts or from other sources like Air Traffic Control, ADS-B Flight Information Services, Connected weather services, etc. Connected weather services are under development to provide accurate and reliable real time weather information to the aircrafts especially to the ones without an onboard weather radar.

In order to perform an effective detection of objects, a number of high performance, reliable and accurate avionics sensors and systems are adopted including non-cooperative sensors (visual and thermal cameras, Laser radar (LIDAR) and acoustic sensors) and cooperative systems (Automatic Dependent Surveillance-Broadcast (ADS-B) and Traffic Collision Avoidance System (TCAS)). In this paper the sensors and system information candidates are fully exploited in a Multi-Sensor Data Fusion (MSDF) architecture.

A DAA system architecture is presented based on Boolean Decision Logics (BDL) for selecting non-cooperative and cooperative sensors/systems including both passive and active Forward Looking Sensors (FLS), Traffic Collision Avoidance System (TCAS) and Automatic Dependent Surveillance - Broadcast (ADS-B). After elaborating the DAA system processes, the key mathematical models associated with both non-cooperative and cooperative DAA functions are presented.

It is assumed that full intent information (Trajectory Change Points (TCP)) is transmitted between aircraft through Automatic Dependant Surveillance - Broadcast (ADS-B). Full Flight Management System (FMS) equipment is required. The experiment described in this paper aimed at gathering more data on autonomous operations from an aircraft perspective, specifically on the acceptability of the concept by pilots, through the evaluation of a prototype interface and of the corresponding procedures.

., towers or buildings) even though they may be equipped with an ADS-B transmitter.

Pacific Daylight Time (PDT) on July 25, 2018 and placed 10 new Iridium NEXT satellites into low Earth orbit (LEO), bringing the total number of Aireon space-based Automatic Dependent Surveillance-Broadcast (ADS-B) payloads in orbit to 65 as global air traffic surveillance service nears debut and satellite constellation nears completion.

Fast-track propulsion testing Whether it is compressor refinement or complete test programs for next-generation aircraft, the level of propulsion system development in Europe seems to be ever-increasing.

This document describes the technical requirements, architectural options, and recommended interface standards to support an Autonomous Distress Tracking (ADT) System intended to meet global regulatory requirements for locating aircraft in distress situations and after an accident. This document is prepared in response to International Civil Aviation Organization (ICAO) and individual Civil Aviation Authorities (CAAs) initiatives.

Materials become design, design becoems function Once things you could hold in your hand, materials have become more design ideas than entities, and the designs themselves are transforming into operational activity. The next steps in flight A look at sero engine and assembly developments as commercial airframe and engine manufacturers begin the biggest battle of all-for next-generation short-haul jet aircraft sales. NextGen Today and tomorrow The FAA has reached a major milestone on the Next Generation Air Transportation System initiative to modernize America's National Airspace System. Stacking the material deck for the 787 Combinations such as composites and titanium being used in future aircraft programs can be very challenging when drilling holes during manufacturing and assembly operations.

ARINC Report 679 defines the functional characteristics of an airborne server that will support Electronic Flight Bags (EFBs) and similar peripherals used in the flight deck, cabin, and maintenance applications. The document defines how EFBs will efficiently, effectively, safely, and securely connect to the airborne server in a way that offer expanded capabilities to aircraft operators. The airborne server has two main functions, first to provide specific services to connected systems, and second to provide centralized security for the EFB and its data. This document is a functional airborne server definition. It does not define the physical characteristics of the server.

Powering Better Battlefield Drones Using Low-Frequency Broadband Sonar on UUVs Experimenting in Realistic Environments Gets NewTechnology to Warfighters Designing Rugged SWaP-Optimized MOSA Solutions for UUVs Does Your UAV Program Need a Transponder? Understanding the Requirements and Guidelines Developing New Anti-Drone Radar Technology Deceiving the Enemy: These Are the Drones You Are Looking For By developing UAVs for physical deception roles to shape an adversary's ability to visually observe and orient to situations, the US military can decrease risk to air and ground combatants during mission execution by causing adversaries to expend resources, delay their reactions, or react incorrectly to tactical situations.

Composite designs benefit from blending When design teams mesh with manufacturing, the result is better aircraft. On the air with transformational broadcasts Next-generation communications and navigation solutions facilitate green approaches and new flight efficiencies for airlines. Automation in composite manufacturing Technological developments are set to change the way aircraft are made.

The purpose of this document is to establish guidelines that should be observed during initial design, production, and maintenance of aircraft components, and to present short-term and long-term strategies to minimize the costs and impacts associated with decreasing availability of components.

This documents defines the Installation Characteristics of an airborne radio transceiver capable of broadband wireless communication with an Airport Surface Network. The Aeronautical Mobile Airport Communications System (AeroMACS) Radio Unit (ARU) will operate in the aeronautical protected frequency of 5091 MHz to 5150 MHz, utilizing the IEEE 802.16e WiMAX protocol. It is intended to offload some of the congested narrowband VHF airport traffic used for ATS and AOC communications. ARU and Antenna Form, Fit, Function and Interfaces are described.

A closer look at composites FEA contributes to design and manufacturing efficiency of complex composite aircraft assemblies.