AER Facilities

Data Reduction System

Hardware

The KWT data reduction system can call upon several different computers to reduce the data with either KWT codes or customer provided codes. The standard data reduction system uses a network of PCs running Windows XP and Windows 2000.

Software

Data are typically corrected using Visual BASIC programs. Custom specific programs can be written on-site if the need arises. There are two main data reduction programs that are used to create a preliminary (“on-line”) and final data set.

On-line Data: Standard corrections applied to the on-line data set include balance interactions, weight tares, flow angularity, wall corrections, blockage corrections, and moment transfers to five customer-specified model moment centers. Data are available in the wind, body, and stability axes. On-line data is preliminary and automatic, with minimal user input to allow for quick analysis of the data. The on-line data are available for access (and plotting) within one second after being acquired.

Final Data: Standard corrections applied to the final data set are the same as the on-line data set except more detailed. In addition, additional tares (such as strut tares), can be applied. The final data set goes through a thorough double-check to ensure data integrity. The final data set is usually available anywhere from a few hours to a day after the data are acquired

Storage Media

KWT can provide data on a variety of electronic media. The standard format is a PC-formatted, CD-ROM or DVD-ROM. Non-standard formats can be accommodated as well. Non-standard formats increase the turn-around time for final data since the conversion takes place at the main computing center on campus. Data can also be transferred via the Internet (see Auxiliary Services).