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39 results about "Algebraic specification" patented technology

Algebraic specification, is a software engineering technique for formally specifying system behavior. An algebraic specification achieves these goals by defining one or more data types, and specifying a collection of functions that operate on those data types.

Sealant material verification method suitable for airworthiness certification

The invention relates to a sealant material verification method suitable for airworthiness certification. The sealant material verification method comprises the following steps: step 1, performing sealant material screening and selecting according to a performance objective designed according to an airplane, and preliminarily determining a sealant material selecting system; step 2, judging whetherto perform airworthiness certification or not for a sealant material which is used by a domestic civil airplane; step 3, judging whether to perform airworthiness certification or not for a sealant material which cannot show conformance by the step 2; step 4, determining a material specification and a material specification verification test schedule of a to-be-verified material according to the material selected in step 3, and submitting the to-be-verified material to the airworthiness certification department to examine; step 5, accomplishing test-level experimental verification and perfecting material specification in the step 4; and step 6, evaluating whether the selected material can reach the requirements of the material specification or not through the test-level experimental verification, and applying for the airworthiness certification department to witness the test in the process. The verification method disclosed by the invention can greatly improve sealant material airworthiness certification efficiency of the sealant material, improves reliability, quickens examination efficiency, and shortens the development period of the product.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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