The phrase "a field prototype of" is correct and usable in written English.
It can be used when referring to a preliminary model or version of something that is tested or used in a real-world environment.
Example: "The engineers developed a field prototype of the new drone to assess its performance in various conditions."
Alternatives: "a practical model of" or "a real-world version of".
Reproducing field prototypes of landslide dams in a flume is challenging, especially with respect to downsizing the impoundment materials to laboratory-scale experiments.
A field-testable prototype of the HCID should be available in two years' time.
A pCR prototype, with a field of view of about 5×5 cm2 and an acquisition time of the order of 10 s (10 kHz, 105 events), has been developed and tested with a 62 MeV proton beam at the INFN-Laboratori Nazionali del Sud (LNS).
This article describes the design and implementation of each functional component of an advanced version of the field prototype system.
This paper also compares wind tunnel observations with the corresponding characteristics of field prototype stay-cable vibrations.
Share with them Merriam-Webster's Online Dictionary's definition of "beta test": "a field test of a prototype version of a product (as software) especially by testers outside the company developing it that is conducted prior to commercial release".
Sentinel has already outperformed conventional binoculars by spotting 30% more simulated threats in tests conducted in a desert environment in Arizona and tropical terrain in Hawaii, according to the company, and this summer the Army will field-test a prototype of the binoculars at Camp Roberts in California.
Two years after initial research began, Project Wing was announced in August 2014 with a YouTube video showing a field test of its most viable prototype in Australia.
A longstanding interest of the Authors' research group at University of Roma Sapienza (UDR1) is the design, development and fielding of a road prototype of a new concept of Hybrid Series vehicle, endowed with a small Gas Turbine set as a thermal engine.
