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SAE ARP704A

Name: SAE ARP704A PDF | Request Standard
SKU: 398672e329f2

Helicopter Engine-Rotor System Compatibility

Standard by SAE International, 2026-07-02

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SAE ARP704A.PDFSecure PDF
SAE ARP704A.PDFOnline Access

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Language: English
License Type: Single User
Updates: Not Included

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Language: English
License Type: Enterprise / Multi User
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About This Item

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. ARP704A has been reaffirmed to comply with the SAE Five-Year Review policy. A reaffirmed status is given to technical reports that have been reviewed by the technical committee and deemed to be current with no need for immediate revision. No changes have been made to this document as a result of this review.

SKU: 398672e329f2

Publication Date: 2026-07-02

Standard Status: latest

Publisher: SAE International

Document Type: Aerospace Standard

Subject: Helicopters, , , , , , , ,

Official SAE: Doi link

This Version: ARP704A (2026-07-02)
Previous Version: ARP704 (1962-06-30)

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