Trailing cone aids flight pressure calibration
A
SpaceAge Control product story
Edited by the Engineeringtalk editorial team
Jul 21, 2003
The 100100 trailing cone is the first static pressure calibration tool to be made commercially available expressly for the task of RVSM certification.
The 100100 trailing cone is the first static pressure calibration tool to be made commercially available to aircraft manufacturers, avionics firms, and operators expressly for the task of RVSM certification.
Designed for use at airspeeds of Mach 0.9 and at temperatures of -54C, the 100100 trailing cone gives users an easy way of calibrating the static pressure error of a pitot-static system.
It does this by giving an accurate measurement of the ambient atmospheric pressure (static pressure).
The trailing cone system consists of a cone that trails at least one fuselage length behind the aircraft via a high-strength pressure tube.
Static pressure is measured forward of the cone by static ports.
The cone stabilises and aligns the ports relative to the freestream airflow.
This design eliminates the cost and complexity of retraction mechanisms.
This design can also be used on aircraft that cannot use more complex systems.
Prior to the 100100 trailing cone, users were required to produce their own trailing cones which involved a lot of trial and error and a number of "lost" trailing cones.
This trial and error required expensive development and flight testing efforts.
The product is available to ship with a 30-day lead time.
Why are trailing cones so popular in RVSM certification work? Primarily because the FAA and JAA specify them as one of several methods that can be used to perform a flight calibrations.
The trailing cone method is the most cost-effective and easiest of the methods to perform.
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