A flight investigation of the distribution of ice-inhibiting fluids on a propeller blade / by Lewis A. Rodert.

Format:

Book

Government document

Author/Creator:

Rodert, Lewis A., author.

Contributor:

United States. National Advisory Committee for Aeronautics, issuing body.

Series:

Technical note (United States. National Advisory Committee for Aeronautics) ; 727.

Technical note / National Advisory Committee for Aeronautics ; No. 727

Language:

English

Subjects (All):

Propellers, Aerial.

Deicing chemicals.

Physical Description:

1 online resource (6 pages, 6 unnumbered pages) : illustrations.

Place of Publication:

Washington, [D.C.] : National Advisory Committee for Aeronautics, 1939.

Summary:

The flow of ice-inhibiting fluids over the blade surfaces of a 12.5-foot-diameter propeller was investigated in flight by discharging dyed fluids at various stations along the leading edges of the blades. The effects on the distribution of varying and fluid composition, the blade-surface roughness, and the orifice design were also observed.

The flow patterns obtained indicated that, under favorable combinations of type of fluid, surface smoothness, and orifice design, the fluid would flow from an orifice near the propeller hub along the leading edge to about the 40-inch blade station (53 percent of the blade radius). The fluid would not flow along the leading edge beyond the 40-inch station regardless of orifice location.

Fluids consisting of 85 percent alcohol and 15 percent of either glycerin or ethylene glycol flowed farthest along the leading edge. Decreasing the percentage of alcohol decreased the percentage of the blade length coveredby the fluid. Discharging the fluid from an orifice that spread the fluid out in a thin film in intimate contac with the blade increased the blade coverage of a given volume of fluid. Surface roughness of the blade reduced the radial distribution.

Notes:

Description based on online resource, title from title screen (viewed May 29, 2020).

"September 1939."

"Langley Memorial Aeronautical Laboratory."

No Federal Depository Library Program (FDLP) item number.

Electronic reproduction. Denton, Texas : University of North Texas, 2011. Electronic reproduction from print master produced by University of North Texas.

Other Format:

Print version: Rodert, Lewis A. A flight investigation of the distribution of ice-inhibiting fluids on a propeller blade

OCLC:

1156323735