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Helicopters Materials properties S-12 Powered Lift Propulsion Committee

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Standard

Cockpit Information Required for Helicopter Turbine Engine Operation and Maintenance
2022-03-29
WIP
AIR1963B
This SAE Aerospace Information Report (AIR) identifies Propulsion EngineerÕs recommendations for the instrumentation that is required for the safe operation and maintenance of turbine engines as installed in helicopters. It should be used as a guide for cockpit layout, as well as a reference for maintenance considerations throughout the propulsion area. Propulsion instruments should receive attention early in the design phase of the helicopter. Maintenance and diagnostics recorders are not considered within the scope of this document. (See ARP1587, "Aircraft Gas Turbine Engine Monitoring System Guide".)
Standard

Cockpit Information Required for Helicopter Turbine Engine Operation and Maintenance
1997-06-01
CURRENT
AIR1963A
This SAE Aerospace Information Report (AIR) identifies Propulsion Engineer’s recommendations for the instrumentation that is required for the safe operation and maintenance of turbine engines as installed in helicopters. It should be used as a guide for cockpit layout, as well as a reference for maintenance considerations throughout the propulsion area. Propulsion instruments should receive attention early in the design phase of the helicopter. Maintenance and diagnostics recorders are not considered within the scope of this document. (See ARP1587, “Aircraft Gas Turbine Engine Monitoring System Guide”.)
Standard

Helicopter Engine-Rotor System Compatibility
2021-03-10
CURRENT
ARP704A
This SAE Aerospace Recommended Practice (ARP) recommends a methodology to be used for the design, analysis and test evaluation of modern helicopter gas turbine propulsion system stability and transient response characteristics. This methodology utilizes the computational power of modern digital computers to more thoroughly analyze, simulate and bench-test the helicopter engine/rotor system speed control loop over the flight envelope. This up-front work results in significantly less effort expended during flight test and delivers a more effective system into service. The methodology presented herein is recommended for modern digital electronic propulsion control systems and also for traditional analog and hydromechanical systems.
Standard

A Method of Ground Resonance Testing for Helicopters
1985-01-01
CURRENT
AIR883
(This document supersedes and cancels AIR 12) 'Ground resonance' is a term which originated in the early days of autogiro development in this country. It is a somewhat ambiguous term as the conditions it describes usually occur at the ground but do not have any association with the common expression 'ground effect'. However, the troubles usually associated with 'ground resonance' do occur when the ship is on or near the ground.
Standard

Helicopter Fuel Economy Evaluation
2022-02-23
WIP
AS1516A
The purpose of this standard is to provide a method of evaluating helicopter fuel economy which accounts for the significant technical variables in helicopter and powerplant design.
Standard

Helicopter FUEL Economy Evaluation
1998-02-01
CURRENT
AS1516
The purpose of this standard is to provide a method of evaluating helicopter fuel economy which accounts for the significant technical variables in helicopter and powerplant design.
Standard

CONCURRENT DESIGN OF ENGINES AND SPECIFICATIONS OF STARTING SYSTEMS FOR HELICOPTERS
2020-01-31
CURRENT
AIR1296
It is recommended that all helicopter engine development programs include an evaluation of engine starting requirements. The evaluation should include starting requirement effects on helicopter weight, cost, and mission effectiveness. The evaluation should be appropriate to the engine stage of development.
Standard

Helicopter Mission Definition
2022-02-23
WIP
ARP1352A
The purpose of this recommended practice is to establish a standard format for the presentation of helicopter mission data, which will provide data required to establish airframe and/or engine component life.
Standard

Helicopter Mission Definition
1997-12-01
CURRENT
ARP1352
The purpose of this recommended practice is to establish a standard format for the presentation of helicopter mission data, which will provide data required to establish airframe and/or engine component life.
Standard

COOLING OF TURBINE ENGINES IN HELICOPTERS
1967-08-31
HISTORICAL
ARP996
A tested method of data presentation and use is described herein. The method shown is a useful guide, to be used with care and to be improved with use.
Standard

Turbine Drive Shaft Connection
2023-01-20
CURRENT
ARP721
This ARP applies to turbine engines that are to be used in helicopters. It provides the engine designer guide lines in achieving a satisfactory turbine engine drive shaft connection.
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