AIR5020A: Time-Dependent In-Flight Thrust Determination

Features

Issuing Committee: E-33 In Flight Propulsion Measurement Committee

Scope

Content

The purpose and intent of Subcommittee E-33E’s effort, the reporting objectives, and the limitations inherent in the reported findings and recommendations are reviewed since these factors are the basis of the information contained in this document.

SAE E-33E Subcommittee was formed to assess the level of industry experience that exists in the area of thrust determination during aircraft time-variant operating conditions. A prime objective was to provide a center for gathering expertise and to be a forum for the exchange of ideas and viewpoints. The committee recognized that a practice for the rigorous treatment of time-dependent thrust did not exist and that several critical aspects of its accounting would need to be investigated.

The specific objectives of this document are:

a
To examine aircraft and engine operating conditions under which the quasi-steady thrust assumption is valid.
b
To determine the extent to which time-dependent (nonstationary) force accounting for engine net thrust and propulsion system throttle-dependent terms is required, consistent with existing and developing thrust-minus-drag techniques.
c
To report time-dependent thrust methodologies and measurement techniques used for flight and ground testing.
d
To present the results of a data review of state-of-the-art methodology appropriate to the determination of aircraft-installed thrust during quasi-steady and dynamic maneuvers.
e
To provide guidelines for validating and improving time-dependent thrust determination as appropriate to a specific program.

Rationale

Content: The overall objectives and approach described in this document were intended to provide guidance and benchmarking. Readers may refer to this approach and practice guidance for application, comparison, or extension to their specific related tasks, using the appropriate technical data, requirements and the most current applicable references. The general approach and guidance are considered stable in regards to the above stated intent.

Meta Tags

Topics: Center of gravity (CG)
Computational fluid dynamics (CFD)
Vehicle performance
Vehicle dynamics /flight dynamics
Landing gear
Flight control systems
Engine mounts
Hypersonic and supersonic aircraft
Military aircraft
Wind tunnel tests

Details

DOI: https://doi.org/10.4271/AIR5020A

Pages: 1

Citation: SAE International Information Report, Time-Dependent In-Flight Thrust Determination, SAE Standard AIR5020A, Stabilized May 2012, Reaffirmed November 2004, Issued December 1996, https://doi.org/10.4271/AIR5020A.

Additional Details