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Standard

Cybersecurity for Propulsion Systems

2023-09-05
CURRENT
AIR7368
This document is intended to serve as suitable guidance for propulsion system manufacturers and applicants for propulsion system type certification. It is also intended to provide guidance for subsequent propulsion system integration into aircraft systems for aircraft certification and operational use. ...The purpose of this SAE Aerospace Information Report (AIR) is to provide guidance for aircraft engine and propeller systems (hereafter referred to as propulsion systems) certification for cybersecurity. Compliance for cybersecurity requires that the engine control, propeller control, monitoring system, and all auxiliary equipment systems and networks associated with the propulsion system (such as nacelle systems, overspeed governors, and thrust reversers) be protected from intentional unauthorized electronic interactions (IUEI) that may result in an adverse effect on the safety of the propulsion system or the airplane. ...Compliance for cybersecurity requires that the engine control, propeller control, monitoring system, and all auxiliary equipment systems and networks associated with the propulsion system (such as nacelle systems, overspeed governors, and thrust reversers) be protected from intentional unauthorized electronic interactions (IUEI) that may result in an adverse effect on the safety of the propulsion system or the airplane.
Standard

Prognostics for Aerospace Propulsion Systems

2020-10-14
CURRENT
AIR5871A
This document applies to prognostics of aerospace propulsion systems. Its purpose is to define the meaning of prognostics in this context, explain their potential and limitations, and to provide guidelines for potential approaches for use in existing condition monitoring environments.
Standard

Aircraft Propulsion System Performance Nomenclature

2022-06-21
CURRENT
AS6502
This SAE Aerospace Standard (AS) provides classical propulsion system performance parameter names for aircraft propulsion systems and their derivatives, and describes the logical framework by which new names can be constructed.
Standard

Architecture Examples for Electrified Propulsion Aircraft

2022-08-01
CURRENT
AIR8678
While providing these example architectures, this document will develop common definitions for the elements of the architectures by defining: 1 The elements of electrified propulsion architectures, including any dedicated power generation and distribution systems as well as energy storage elements. 2 The interfaces to/from the electrified propulsion system. 3 The interfaces within the electrified propulsion system. 4 Electrical energy management and storage architecture of an electrified propulsion system. ...The application of electric power for aircraft propulsion can take a variety of forms, ranging from partial electric to full electric. The introduction of electric engines to drive propulsors, along with the variety of available methods to generate electricity and store energy offers great degree of new design freedom for next-generation aircraft and aircraft architectures. ...This newfound design freedom exposes a need within the aviation industry to establish a common design language for electrified propulsion. While this need for a common design language is recognized, the intent of this document is to encourage innovation, providing reference architectures as a launching point for future work in this area.
Standard

Nomenclature and Definitions for Electrified Propulsion Aircraft

2022-08-01
CURRENT
ARP8676
Create and publish a list of terms relevant to electrified propulsion aircraft with summary text descriptions. The terms and descriptions will not provide full explanations, diagrams, and other detailed technical descriptions. ...This document defines the relevant terms and abbreviations related to the design, development, and use of electrified propulsion in aircraft. This definition is provided to enable a consistent use of technical language throughout the standards developed by the E-40 committee.
Standard

Silver, Copper, and Nickel Alloy Brazed Joints for Aerospace Propulsion Systems

2022-08-26
CURRENT
ARP573E
This recommended practice covers design requirements for silver, copper and nickel brazed joints, primarily for tube connections, for aerospace propulsion systems. The environmental conditions stated herein, and those given in the applicable AMS specifications, provide the limitations of this ARP.
Book

Advances in Electric Propulsion

2017-05-18
Aviation propulsion development continues to rely upon fossil fuels for the vast majority of commercial and military applications. ...With those challenges in mind, research and development of more efficient and electric propulsion systems will expand. Fuel-cell technology is but one example that addresses such emission and resource challenges, and others, including negligible acoustic emissions and the potential to leverage current infrastructure models. ...Requirements for greater flight time, stealth characteristics, and thrust-to-power ratios adds urgency to the development of efficient propulsion methods for applications such as UAVs, which looks to technologies such as asymmetrical capacitors to enhance electric propulsion efficiency.
Technical Paper

Lear Fan Propulsion System

1980-04-01
800609
An aircraft propulsion system for Mach .6 flight is being developed which utilizes two turboshaft engines driving a pusher propeller through driveshafts and a combining gearbox.
Technical Paper

A Propulsion System for Orbit-to-Orbit Shuttle

1971-02-01
710770
The program is being conducted at Rocketdyne, a division of North American Rockwell Corporation, under the sponsorship of the Air Force Rocket Propulsion Laboratory under Contract F04611-67-C-0116. This paper summarizes the accomplishments of the program to date, and describes the engine system and its possible application to the orbit-to-orbit shuttle (OOS).
Technical Paper

Propulsion Education at Carleton University

1993-04-01
931391
The paper gives an overview of the propulsion content of the programs at the undergraduate and postgraduate levels, as offered to students in both Mechanical and Aerospace Engineering.
Technical Paper

Ramjet Propulsion for Single-Stage-to-Orbit Vehicles

1977-02-01
771011
Several ramjet propulsion systems are evaluated for future Earth-to-orbit transportation designed for reduced operational cost, reduced loads on payloads, and increased flexibility of launch site and schedule.
Technical Paper

C-5A Propulsion System Installation

1968-02-01
680333
The C-5A propulsion system installation is described and discussed. Induction system, exhaust system, and thrust reverser configurations define the general nacelle concepts.
Technical Paper

Apollo Spacecraft Propulsion Systems

1969-02-01
690704
These crew safety requirements impose many unusual constraints that are not required in launch vehicle or unmanned propulsion system designs. These requirements and their effects on design and operation are discussed and the systems operational experience on Apollo models are presented.
Standard

Electronic Propulsion Control System/Aircraft Interface Control Documents

2021-03-08
CURRENT
AIR6181A
This SAE Aerospace Information Report (AIR) provides guidelines to document the functional and physical interface requirements for the electrical systems (including an Electronic Engine Control System (EECS) and its components) between a given propulsion system and the aircraft on which the system is installed. The Interface Control Document (ICD) is considered to be a subset of the Engine Installation Manual, with interface considerations between the Airframer and Engine manufacturer.
Technical Paper

Commuter Turboprop Propulsion Technology

1980-09-01
801243
General Electric is conducting a Propulsion Study for NASA as part of the Small Transport Advanced Technology (STAT) program. The General Electric CT7 is used as the current modern turboprop engine baseline.
Technical Paper

Prop-Fan Propulsion -Its Status and Potential

1978-02-01
780995
The prop-fan propulsion system is being investigated as part of the NASA Aircraft Energy Efficiency program which includes both analytical studies and experimental tests.
Technical Paper

Shuttle Ferry Propulsion System

1973-02-01
730928
A unique propulsion system is being developed for the Space Shuttle Orbiter utilizing airbreathing engines to provide a means for horizontal flight testing and ferrying the Orbiter within the contiguous United States. ...The airbreathing engine arrangement which has resulted, while employing conventional propulsion subsystems, still possesses installation problems because of the low ground clearance.
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