This is the electronic format of the Journal.
This is the electronic format of the Journal.
Aerospace Photonics Technology Readiness Advancement and Insertion via Verification and Validation of Active Photonic Device Reliability and Packaging Durability
This document is intended for discrete and integrated digital, wavelength division multiplexing (WDM), and analog/radio frequency (RF) photonic components developed for eventual transition to aerospace platforms. The document provides the reasons for verification and validation of photonic device reliability and packaging durability. The document also provides methods for verifying and validating photonic device reliability and packaging durability. Applicable personnel include: Engineering Managers, Research and Development Managers, Program Managers, Designers, Engineers.
This document is intended for use by designers and producers of electronic sub-assemblies, assemblies, and equipment used in ADHP applications to conduct lifetime assessments of microcircuits with the potential for early wearout; and to implement mitigations when required; and by the users of the ADHP equipment to assess those designs and mitigations.
Abstract This study is made on a simplified pitch model of an armored fighting vehicle. Jerks and angular acceleration inside the vehicle compartment Affects accurate firing attack and reduced fatigue to the occupants in Vehicle. The Stability Augmentation Technique can enhance the stability and ride comfort of the vehicle platform from road and firing disturbance. The force requirement for stabilizing the platform is calculated from the displacement of vehicle body in terms of pitch angle and Heave displacement with respect to the equilibrium position, the equivalent force at suspension mounting points required to stabilize the platform is calculated using a force transformation technique. The required force is given by an active Damper for stabilization, within the limit of damper capacity.
This SAE Aerospace Recommended Practice (ARP) addresses the information content for the electronic presentation of data linked weather Meteorological (MET) information used in the cockpit. It defines guidelines for the electronic presentation of MET information (including text, graphics, textures, icons, and symbology) to the flight crew. This ARP is applicable to certified equipment for the electronic display (whether installed or portable) of MET information in the cockpit. This ARP also provides a set of symbols that illustrate the depiction of data linked MET information on flight deck display systems such as Navigation Displays, Multi-function Displays, and Electronic Flight Bags. These recommendations complement standard symbology guidelines for airborne applications already in existence (see reference section for applicable documents).
This SAE Aerospace Information Report (AIR) has been prepared to provide information regarding options for optical control of fluid power actuation devices. It is not intended to establish standards for optical fluid power control, but rather is intended to provide a baseline or foundation from which standards can be developed. It presents and discusses approaches for command and communication with the actuation device via electro-optic means. The development of standards will require industry wide participation and cooperation to ensure interface commonality, reliability, and early reduction to practice. To facilitate such participation, this document provides potential users of the technology a balanced consensus on its present state of development, the prospects for demonstration of production readiness, and a discussion of problem areas within this technology.
Aerospace Qualified Electronic Component (AQEC) Requirements, Volume 1 - Integrated Circuits and Semiconductors
This Standard applies to integrated circuits and semiconductors exhibiting the following attributes: a. A minimum set of requirements, or information provided by the part manufacturer, which will allow a standard COTS component to be designated AQEC by the manufacturer. b. As a minimum, each COTS component (designated AQEC) will have been designed, fabricated, assembled, and tested in accordance with the component manufacturer's requirements for standard data book components. c. Qualification of, and quality systems for, the COTS components to be designated as AQEC shall include the manufacturer's standards, operating procedures, and technical specifications. d. Components manufactured before the manufacturer has addressed AQEC requirements, but utilizing the same processes, are also considered AQEC compliant. e. Additional desired attributes of a device designated AQEC (that will support AQEC users) are found in Appendix B of this standard.
This SAE Aerospace Information Report (AIR) contains Lessons Learned from aerospace actuation, control and fluid power systems technologies. The lessons were prepared by engineers from the aerospace industry and government services as part of the work of SAE Committee A-6, Aerospace Actuation, Control and Fluid Power Systems.
Establish minimum requirements for procedures, materials and systems for protecting electronic components and assemblies from adverse environments in commercial and government applications.
Materials Infusing Lightweight Composite Structures Business Jets Business Jets Bounce Back
This Aerospace Information Report (AIR) provides information on the thrust vectoring flight control systems incorporated on various aircraft development programs and production military aircraft. This report includes V/STOL aircraft thrust vector applications in addition to recommendations for use of thrust vectoring for the improvement of low speed maneuverability in conventional aircraft. Descriptions of each aircraft are provided along with a summary of the thrust vector control system, and, mechanical design methodologies used. Block diagrams, system schematics, and, several system level components are presented.
This specification provides guidance for the physical layer of optical networks which use Wavelength Division Multiplexing (WDM), within the SAE AS5659 WDM LAN specifications document family. The physical layer consists of cabling and connectors which provide the optical interconnections between the components and portions of the network. Performance requirements for general link connections- called the physical layer- are described. Specific sets of documents are identified, corresponding to each of several environments, which describe physical layer design, installation, maintenance, and training.
This document describes the Client Adaptation Element (CAE), the set of functions that provides access and aggregation capability for the WDM LAN, within the SAE AS5659 WDM LAN specifications document family. In the WDM LAN, the CAE fits in between the Optical Backbone, which provides transmission of data over the transparent network, and the clients which the network serves. The complexity of the CAE depends on the types and number of clients.
This document describes network management and control facilities for the WDM LAN, within the SAE AS5659 WDM LAN specifications document family. Unlike like point-to-point solutions, networks require a control plane to allocate the shared network resources and a management plane which provides a disciplined approach to configuring and monitoring the network. Within a Wavelength Division Multiplexed (WDM) environment, management and control provides wavelength selection and routing for traffic that is processed. The extent of network management and control depends on the design of the network, and can range from hardwired wavelengths to dynamic wavelength allocation with damage recovery.
This document provides a specification for the WDM Optical Backbone Network (OBN) within the SAE AS5659 WDM LAN specifications document family. The specification applies to any optical network which uses Wavelength Division Multiplexing (WDM) in any optical media, and describes a transparent optical network that contains optical components (i.e. without Optical-to-Electrical conversion). The specification describes optical network elements (ONE) that perform optical transport, optical add/drop, optical amplification, optical routing, and optical switching functions. Performance limits are given for conforming optical signal interfaces and transfer functions for the ONEs, as well as architectures comprising combinations of them. This specification will enable network and systems engineers to design and use scalable and upgradable WDM based optical networks aboard mobile platforms.
This SAE Aerospace Information Report (AIR) is devoted to the challenges of applying optics to new advanced RF analog systems only; digital data link applications are covered elsewhere in protocol/architecture specific documents like Fibre Channel, ATM, Ethernet, Sonet, etc.
The ARP shall cover the objectives and activities of Verification & Vallidation Processes required to assure high quality and/or criticality level of an IVHM Systems and Software.
This specification covers constant displacement hydraulic motors, generally remotely mounted, using hydraulic fluid under pressure as the energy transfer medium for driving various accessories. Hydraulic motors shall be suitable for use in aircraft hydraulic systems conforming to and as defined in MIL-H-5440 and MIL-H-8891 as applicable.
This document recommends design and performance criteria for aircraft lighting systems used to illuminate flight deck controls, luminous visual displays used for transfer of information, and flight deck background and instrument surfaces that form the flight deck visual environment. This document is for commercial transport aircraft except for applications requiring night vision compatibility.
Most of the Trimmable Horizontal Stabilizer Actuators (THSA) feature a dual structural load path, the primary load path being loaded, the secondary load path being normally unloaded, or both load paths sharing in parallel the Horizontal Stabilizer load. This document describes existing methods for detecting rupture or disconnection of loaded load paths as an overview for those specifying or designing Horizontal Stabilizer Trim Actuators in order to compare existing solutions as reference for implementation in new aircraft programs.
This document defines methods to exchange data about the health of a fiber optic network.
This document defines performance standards which fiber optic cable splices must meet in order to be accepted for use in aerospace platforms and environments.
Propulsion: Energy Sources Flying on vegetation Avionics/Electronics Avionics heat up, in a good way Unmanned Vehicles Reaching the benchmark in secure unmanned vehicle software Thermal Management Submersion and directed flow cooling technology for military applications RF & Microwave Technology Airborne antenna considerations for C-Band telemetry systems Software-designed system improves wireless test speed and coverage
This SAE Aerospace Information Report (AIR) examines the need for and the application of a power train usage metric that can be used to more accurately determine the TBO for helicopter transmissions. It provides a formula for the translation of the recorded torque history into mechanical usage. It provides examples of this process and recommends a way forward. This document of the SAE HM-1 IVHM Committee is not intended as a legal document and does not provide detailed implementation steps, but does address general implementation concerns and potential benefits.
Learning of Intelligent Controllers for Autonomous Unmanned Combat Aerial Vehicles by Genetic Cascading Fuzzy Methods
Abstract Looking forward to an autonomous Unmanned Combat Aerial Vehicle (UCAV) for future applications, it becomes apparent that on-board intelligent controllers will be necessary for these advanced systems. LETHA (Learning Enhanced Tactical Handling Algorithm) was created to develop intelligent managers for these advanced unmanned craft through the novel means of a genetic cascading fuzzy system. In this approach, a genetic algorithm creates rule bases and optimizes membership functions for multiple fuzzy logic systems, whose inputs and outputs feed into one another alongside crisp data. A simulation space referred to as HADES (Hoplological Autonomous Defend and Engage Simulation) was created in which LETHA can train the UCAVs intelligent controllers.
A Hybrid Projectile (HP) is a ballistically launched round that transforms into an Unmanned Aerial Vehicle (UAV) at a designated point during flight. Aerodynamic control surfaces and associated control laws were sought that would extend the projectile's range using body lift and include guidance for a selected point of impact. Several challenges were encountered during the modification of an existing projectile, in this case a 40mm round, to achieve range extension and controllability. The control surfaces must be designed to allow for de-spin, controllability, and natural static stability. Also, a control system with laws and guidance relationships between heading, pitch or glide rate, and the associated aerodynamic surface movements needed to be developed. The designed aerodynamic surfaces, external ballistics, and control methods developed were modeled in a projectile flight simulator built in MATLAB.
Abstract Since 2000, avionics is facing several changes, mostly driven by technological improvements in the electronics industry and innovation requirements from aircraft manufacturers. First, it has progressively lost its technological leadership over innovation processes. Second, the explosion of the electronics consumer industry has contributed to shorten even more its technology life cycles, and promoted the use of COTS. Third, the increasing complexity of avionics systems, which integrate more and more functions, have encouraged new players to enter the market. The aim of this article is to analyze how technological changes can affect the competitiveness of avionics firms. We refer to criticality levels as a determinant of the market competitiveness. Certification processes and costs could stop new comers to bring innovations from the consumer electronics industry and protects traditional players.