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This process uses a direct drive method up to the first airframe electrical resonance, and a radiated field test methods above the first airframe resonance. However, these changes give rise to myriad new concerns related to electromagnetic interference EMI of critical on-board electronic systems.
While this document is generally consistent with AC and draft HIRF AMJ, users of this document should verify that the guidance in this document is acceptable to the cognizant airworthiness authorities. Standards Subsctiption may be the perfect solution. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
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An applicant may elect to establish an alternative method of compliance that is acceptable to the cognizant airworthiness authorities. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
Generally, 2-D and 3-D 558 models of the airframe up to the first electrical resonance are required. Models are required to estimate the zrp of influence ground plane coupling will have on low level swept current test results, especially where it is impractical to elevate the aircraft safely due to its size.
This guide is neither mandatory nor regulatory in nature and does not constitute a regulation or legal interpretation of the regulation.
HIRF Testing of Aircraft Systems | NTS | NTS News Center
The information in this guide represents a collection of best engineering practices that have been used to certify aircraft HIRF protection. Need more than one copy?
These concerns are based on the phenomena where electronic circuitry fails to operate as intended i. Please first log in with a verified email before subscribing to alerts. This standard is not included in any packages.
Due to increasing advancements in the field of electronics over the 55833 60 years, mechanical adp control devices are being replaced or augmented with electronic circuitry for enhanced accuracy, reliability and, most of all, human safety. If the document is revised or amended, you will be notified by email.
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Subscription pricing is ap by: As the voice of the U. This standard is also available to be included in Standards Subscriptions. HIRF Testing of Aircraft Systems April 5, Early aircraft designs typically consisted of a series of cables, chains, cranks and various other mechanisms to operate the systems which made the aircraft fly.
This approach is preferred over high level testing for its reduced RF exposure levels and RF hazard considerations. However, the Low level test requires a complex analytical modeling approach to ensure compliance.
HIRF Testing of Aircraft Systems
Please first verify your email before subscribing to alerts. Often times the aircraft size prohibits the use of conventional anechoic lined EMI test chambers and special permits are required for performing the testing process afp. High Level Tests are performed using peak and average field levels determined for one of three particular HIRF environments over a test frequency range up to 18 GHz. Already Subscribed to this document.
Early aircraft designs typically consisted of a series of cables, chains, cranks and various other mechanisms to operate 55583 systems which made the aircraft fly.
Your Alert Profile lists the documents that will be monitored. Proceed to Checkout Continue Shopping. We have no amendments or corrections for this standard. This requires several factors to be considered prior to testing such as the need for specialized aarp power test equipment, aircraft system instrumentation and flight emulation, RF hazards regarding fuel ignition and personnel exposure and adherence to national RF transmission rules and regulations.
Therefore, the need for EMI testing has never been more important for all commercial and military aircraft in use today. You may delete a document from your Alert Profile at any time.