Standard:

• AIR4065

Reaffirmed:

• 2004-11-17

Revised:

• 1993-06-01

Revision:

• Historical. Access the latest revision: AIR4065A

Issuing:

• E-33 In Flight Propulsion Measurement Committee

Scope:

AIR 4065, "Propeller/Propfan In-Flight Thrust Determination" addresses steady state propeller thrust as applied to aircraft which are usually powered by gas turbine engines. It includes theory, examples, and methods which have been used. Specifically two methods are discussed, the "J" or traditional J,C_p,C_t,ν method including the SBAC variation and a new method we call the "Theta" method which is dependent on knowing blade angle, power/torque and flight Mach number. Implementation guidelines are offered as well as overall approaches to flight testing. Appendices include expansions on theory and testing as well as examples.

History:

Standard	Published	Revision	Status
AIR4065A	2012-05-29	Latest	Stabilized
AIR4065	1993-06-01	Historical	Reaffirmed

AKA:

• SAE AIR 4065

Sector:

• Aerospace

Topic:

• Propellers and rotors
• Computational fluid dynamics
• Aircraft displays
• Gas turbines
• Hybrid engines
• Tests and Testing
• Test facilities
• Data acquisition