Standard:

• AIR1678

Reaffirmed:

• 1992-12-01

Revised:

• 1985-08-01

Revision:

• Historical. Access the latest revision: AIR1678B

Issuing:

• E-33 In Flight Propulsion Measurement Committee

Scope:

At present, there are no industry or government standards for determining in-flight thrust or the associated uncertainty. The purpose of this document is to provide information covering methods for estimating the measurement error or uncertainty of in-flight thrust determination in aircraft employing conventional turbofan/turbojet engines. Methodologies beyond those presented are required in order to evaluate configurations such as vectored thrust or V/STOL. The document is intended to be used as a technical guide. It is not intended to be used as a standard or legal document. A companion document, SAE AIR 1703, presents information and guidance on the selection and use of methodologies to predict and assess propulsion system in-flight thrust. Both documents describe comprehensive procedures and tasks for implementing the methodologies. Each program would select those tasks that are appropriate to meet its particular objectives.

History:

Standard	Published	Revision	Status
AIR1678B	2011-05-16	Latest	Revised
AIR1678A	2002-08-15	Historical	Reaffirmed
AIR1678	1985-08-01	Historical	Reaffirmed

AKA:

• SAE AIR 1678

Sector:

• Aerospace

Topic:

• Engines
• Tests and Testing