Airborne infrared low level wind shear predictorThe operating principles and test performance of an airborne IR (13-16 micron) temperature-sensing detection and warning system for low-level wind shear (LLWS) are presented. The physics of LLWS phenomena and of the IR radiometer are introduced. The cold density-current outflow or gust front related to LLWS is observed in the IR spectrum of CO2 by a radiometer with + or - 0.5-C accuracy at 0.5-Hz sampling rate; LLWS alerts are given on the basis of specific criteria. Test results from the JAWS experiments conducted at Denver in July 1982, are presented graphically and discussed. The feasibility of the passive IR system is demonstrated, with an average warning time of 51 sec, corresponding to a distance from touchdown of about 2 miles.
Document ID
19840035256
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kuhn, P. M. (NASA Ames Research Center; Northrop Services, Inc. Moffett Field, CA, United States)
Kurkowski, R. L. (NASA Ames Research Center Moffett Field, CA, United States)