Time-Dependent In-Flight Thrust Determination
- Aerospace Standard
- AIR5020
- Reaffirmed
Scope
-
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.
Topic
Data Sets - Support Documents
Title | Description | Download |
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Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
TABLE 1A | Roman | |
TABLE 1B | Greek | |
TABLE 1C | Subscripts | |
Unnamed Dataset 6 | ||
TABLE 2 | Aircraft Quasi-Steady Threshold Limits (Fixed Throttle) | |
TABLE 3 | Summary of Test Facility Simulation and Transient Capabilities | |
TABLE 4A | Typical Gas Path Methods Instrumentation (Nonafterburning Engine with Constant Area Exhaust Nozzle) | |
TABLE 4B | Typical Gas Path Methods Instrumentation (Nonafterburning Engine with Variable Area Exhaust Nozzle) | |
TABLE 4C | Typical Gas Path Methods Instrumentation (Afterburning Engine with Variable Area Exhaust Nozzle) | |
TABLE 5A | Transient Simulation Method Instrumentation (Nonafterburning Engine with Constant Area Exhaust Nozzle) | |
TABLE 5B | Transient Simulation Method Instrumentation (Nonafterburning Engine with Variable Area Exhaust Nozzle) | |
TABLE 5C | Transient Simulation Method Instrumentation (Afterburning Engine) | |
TABLE 6 | Excess Thrust Measurement Method Instrumentation | |
TABLE 7 | Typical Accelerometer Ranges and Uncertainties | |
TABLE 8 | Typical Altitude Facility Instrumentation Uncertainty | |
TABLE 9 | Typical Flight Test Instrumentation Uncertainty for Steady-State Data | |
TABLE 10 | Flight Test Maneuvers |
Issuing Committee
E-33 In Flight Propulsion Measurement Committee
Reviews industry experience and state-of-the-art on in-flight thrust, meassurement and its uncertainty, including ASME, ISO, MIDAP, USAF, JANNAF, and NIST methods - including sources of error. Determines whether there is a basis to support development of a procedure for determing uncertainty, and review methods of measuring in-flight thrust. from possible drafting of information documents. Produces several SAE Aerospace Information Reports on Determination of In-Flight Thrust and Measurement Uncertainty of In-Flight Thrust Determination.
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