Accession Number:

AD0261035

Title:

T-37B CATEGORY II ADVERSE WEATHER FLIGHT TESTS

Descriptive Note:

Corporate Author:

AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OHIO FLIGHT AND ENGINEERING TEST GROUP

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

1.0

Abstract:

-261 0359N2 AD-261 0 6LDiv. 14, 26 U 10 Aug 61 Wa rvliet Arsenal N. Y. EC NIQUE OF APPLYING ELECTRICAL INSULATING VARNISH TO THIN METAL STRIPS, by T. M. Pochily and R. H. Hill. Nov 60, 16p. table Technical rept. no. WVT-RI-6003-I Unclassified r por Notice Only Military offices may request from ASTIA. Others request approval of Diamo d Ordn nce Fuze Labs., Wash. 25, D. C. Attn ORDTL 06.33. DESCRIPTORS Electric insulation, Varnishes, Coatings, Processing, Thickness, Electro tatic fields Surface tension, Dielec ric properties, Electrical conductance, Tests, Metals, Sheets, Materials. A technique was developed to apply insulating varnish to electrical con uctors having a rectangular cross section 0.005 in. thick by 0. 93 in. wide. harp corners and burrs of high curvature posed several difficulties. Sur ace tension caused the insulating varnish to become thin where the conductor had a high c rvature. This is also the place where the electrostatic field is concentr ted. As a result, the insulation often times failed at t is place. A method of applying an adeq ate thickness of insulation to the high field region in spite of the surface tension is described. The thickness deposited on ad acent flat surfaces as not excessive. S TRIPS OF CONDUCTOR SO INSULATED WILL PASS THE MEGGER TE T, WHICH REQUIRES IN ULATION RESISTANCE OF AT LEAST MEGOHMS AT V-DC. The method developed did not break down when the voltage had been increased to 4000 v the maximum output of the t ster. The insulation, therefore, had a breakdown point of pproximately 400 v RMS 60 c per mil of thickness. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE