A preliminary study of the prevention of ice on aircraft by the use of engine-exhaust heat / 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) ; 712.

Technical note / National Advisory Committee for Aeronautics ; No. 712

Language:

English

Subjects (All):

Airplanes--Ice prevention.

Airplanes.

Waste gases--Combustion.

Waste gases.

Physical Description:

1 online resource (10 pages, 6 unnumbered pages) : illustrations

Place of Publication:

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

Summary:

An investigation was made in N.A.C.A. ice tunnel at air temperatures from 20 degrees to 28 degrees F. and at a velocity of 80 miles per hour to determine whether ice formations on a model wing could be prevented by the use of the heat from the engine-exhaust gas. Various spanwise duct systems were tested in a 6-foot chord N.A.C.A. 23012 wing model.

The formation of ice over the entire wing chord was prevented by the direct heating of the forward 10 percent of the wing by hot air, which was passed through leading-edge ducts. Under dry conditions, enough heat to maintain the temperature of the forward 10 percent of the wing at about 200 degrees F. above that of the ambient air was required for the prevention of ice formation. The air temperature in the ducts that was necessary to produce these skin temperatures varied from 360 degrees to 834 degrees F.; the corresponding air velocities in the duct were 152 and 45 feet per second.

Ice formations at the leading edge were locally prevented by air that passed over the interior of the wing surface at a velocity of 30 feet per second and a temperature of 122 degrees F.

Notes:

Online resource, PDF version; title from title page (TRAIL, viewed November 24, 2021).

"June 1939."

"Langley Memorial Aeronautical Laboratory."

No Federal Depository Library Program (FDLP) item number.

Includes bibliographical reference (page 10).

Print version record.

Other Format:

Print version: Rodert, Lewis A. A Preliminary study of the prevention of ice on aircraft by the use of engine-exhaust heat

OCLC:

1154792978