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  Partner: UNT Libraries Government Documents Department
 Year: 1943
 Collection: National Advisory Committee for Aeronautics Collection
Adaptor for measuring principal strains with Tuckerman strain gage

Adaptor for measuring principal strains with Tuckerman strain gage

Date: January 1, 1943
Creator: Mcpherson, A E
Description: An adapter is described which uses three Tuckerman optical strain gages to measure the displacement of the three vortices of an equilateral triangle along lines 120 degrees apart. These displacements are substituted in well-known equations in order to compute the magnitude and direction of the principal strains. Tests of the adaptor indicate that principal strains over a gage length of 1.42 inch may be measured with a systematic error not exceeding 4 percent and a mean observational error of the order of + or minus 0.000006. The maximum observed error in strain was of the order of 0.00006. The directions of principal strains for unidirectional stress were measured with the adaptor with an average error of the order of 1 degree.
Contributing Partner: UNT Libraries Government Documents Department
Additional design charts relating to the stalling of tapered wings

Additional design charts relating to the stalling of tapered wings

Date: January 1, 1943
Creator: Harmon, Sidney M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The advantages of uniform fuel distribution for air-cooled engines from considerations of cooling requirements and fuel economy

The advantages of uniform fuel distribution for air-cooled engines from considerations of cooling requirements and fuel economy

Date: December 1, 1943
Creator: Nielson, Jack
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic and hydrodynamic tests of a family of models of flying-boat hulls derived from a streamline body : NACA model 84 series

Aerodynamic and hydrodynamic tests of a family of models of flying-boat hulls derived from a streamline body : NACA model 84 series

Date: September 1, 1943
Creator: Luoma, Arvo A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic and hydrodynamic tests of a family of models of flying hulls derived from a streamline body -- NACA model 84 series

Aerodynamic and hydrodynamic tests of a family of models of flying hulls derived from a streamline body -- NACA model 84 series

Date: January 1, 1943
Creator: Parkinson, John B; Olson, Roland E; Draley, Eugene C & Luoma, Arvo A
Description: A series of related forms of flying-boat hulls representing various degrees of compromise between aerodynamic and hydrodynamic requirements was tested in Langley Tank No. 1 and in the Langley 8-foot high-speed tunnel. The purpose of the investigation was to provide information regarding the penalties in water performance resulting from further aerodynamic refinement and, as a corollary, to provide information regarding the penalties in range or payload resulting from the retention of certain desirable hydrodynamic characteristics. The information should form a basis for over-all improvements in hull form.
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics and flap loads of perforated double split flaps on a rectangular NACA 23012 airfoil

Aerodynamic characteristics and flap loads of perforated double split flaps on a rectangular NACA 23012 airfoil

Date: January 1, 1943
Creator: Turner, Thomas R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Air-flow surveys in the region of the tail surfaces of a single-engine airplane equipped with dual-rotating propellers

Air-flow surveys in the region of the tail surfaces of a single-engine airplane equipped with dual-rotating propellers

Date: March 1, 1943
Creator: Sweberg, Harold H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Altitude rating of electrical apparatus

Altitude rating of electrical apparatus

Date: January 1, 1943
Creator: Lebenbaum, Paul, Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of heat and compressibility effects in internal flow systems and high-speed tests of a ram-jet system

Analysis of heat and compressibility effects in internal flow systems and high-speed tests of a ram-jet system

Date: January 1, 1943
Creator: Becker, John V & Baals, Donald D
Description: An analysis has been made by the NACA of the effects of heat and compressibility in the flow through the internal systems of aircraft. Equations and charts are developed whereby the flow characteristics at key stations in a typical internal system may be readily obtained.
Contributing Partner: UNT Libraries Government Documents Department
The analysis of strains indicated by multiple-strand resistance-type wire strain gages used as rosettes

The analysis of strains indicated by multiple-strand resistance-type wire strain gages used as rosettes

Date: January 1, 1943
Creator: Dow, Norris F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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