The phrase "array required" is correct and usable in written English.
It can be used in contexts where a specific type of data structure, an array, is needed or necessary for a function, process, or operation.
Example: "To proceed with the data analysis, an array required for input must be provided."
Alternatives: "array needed" or "array necessary".
Another is the photovoltaic cell array required to convert light into electrical energy.
Moving the 35,000-pound array required two spacewalks and a nimble handoff between the robotic arms of the shuttle and the station.
The sizes of the PV array required for this NZEH are found to have been reduced with the proposed modifications.
Important learning points are the effects of the PV module inclination, light intensity and temperature on the module output, and the size of the PV array required to produce a given amount of energy.
In the past, this renewable means of hydrogen production has suffered from low efficiency (2 6%), which increased the area of the PV array required and therefore, the cost of generating hydrogen.
The array required a low amount of power (less than 0·6 W) and the detectors induced small levels of magnetic field (magnetic induction less than 5 μT DC and less than 1·5 μT at 576 kHz).
The successful implantation of a Utah array requires tremendous precision.
The optimal processing of a signal by an antenna array requires that the noise covariance matrix be known.
The new implant, which works like a combination digital imaging chip and photovoltaic array, requires much less bulky hardware than previous designs.
Making such a transistor array requires a process called chemical-vapor deposition that's difficult to carry out on rolls of plastic or metal.
The proposed thermocouple array requires far fewer numbers of thermoelements than that required by sets of thermocouples for the same number of temperature sensing points.
