Academic Journal
Radiated Electric Field Measurements in U.S. Army Helicopters
| العنوان: | Radiated Electric Field Measurements in U.S. Army Helicopters |
|---|---|
| المؤلفون: | Bruckart, James E. |
| المساهمون: | ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL |
| المصدر: | DTIC AND NTIS |
| سنة النشر: | 1992 |
| المجموعة: | Defense Technical Information Center: DTIC Technical Reports database |
| مصطلحات موضوعية: | Helicopters, Medical Facilities, Equipment and Supplies, Radiofrequency Wave Propagation, ELECTROMAGNETIC FIELDS, AIRCRAFT EQUIPMENT, RADIOFREQUENCY INTERFERENCE, ELECTROMAGNETIC COMPATIBILITY, MEDICAL EQUIPMENT, CONTROL, ENVIRONMENTS, ELECTRIC FIELDS, PATIENTS, INTERVALS, ARMY AVIATION, RADIO TRANSMISSION, MALFUNCTIONS, FLIGHT, BROADBAND, INTERFERENCE, ELECTROMAGNETIC INTERFERENCE, OPERATION, JOH-58A AIRCRAFT, JUH-1H AIRCRAFT, JUH-60A AIRCRAFT, PE63807A, WU201 |
| الوصف: | Aircraft systems and medical devices generate electromagnetic fields. Electromagnetic interference (EMI) can cause faulty operation of aircraft systems or medical devices and endanger patients or aircraft crewmembers. An in- flight study was conducted to describe the electromagnetic fields in typical operations with U.S. Army helicopters. Broadband isotropic field sensors measured electric fields from 5 kHz to 3 MHz, 3 to 500 MHz, and 0.5 MHz to 6 GHz. Fields were measured at 0.5 m intervals in JOH-58A, JUH-1H, and JUH-60A helicopters with systems off, operating RPM, 5-foot hover, 50-foot hover, and cruise. Environment electric fields were homogeneous and less than 0.1 V/m. Helicopter fields increased during ascent, but remained less than 2 V/m except during radio transmissions. EMI was demonstrated during FM radio transmission on the Physio Control Lifepak 8. The results are useful in evaluating electromagnetic emissions from medical devices and predicting operations that may result in in-flight malfunction of a medical device. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| Relation: | http://www.dtic.mil/docs/citations/ADA249634 |
| الاتاحة: | http://www.dtic.mil/docs/citations/ADA249634 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA249634 |
| Rights: | Approved for public release; distribution is unlimited. |
| رقم الانضمام: | edsbas.520107A |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |