UNT Libraries Government Documents Department - 9 Matching Results

Search Results

Results: 1 - 9
open access

The effect of high solidity on propeller characteristics at high forward speeds from wind-tunnel tests of the NACA 4-(3)(06.3)-06 and NACA 4-(3)(06.4)-09 two-blade propellers

Description: From Summary: "Tests of two-blade propellers having the NACA 4-(3)(06.3)-06 and NACA 4-(3)(06.4)-09 blade designs (blade activity factors of 179 and 263, respectively) have been made in the Langley 8-foot high-speed tunnel through a range of blade angle from 20 degrees to 70 degrees for free-stream Mach numbers from 0.165 to 0.725 to determine the effects of high solidity and compressibility on propeller characteristics. The tests are part of a general investigation of propellers at high forwar… more
Date: February 27, 1947
Creator: Delano, James B.
Item Type: Refine your search to only Report
open access

Investigations of Tumbling Characteristics of a 1/20-Scale Model of the Northrop N-9M Airplane

Description: From Summary: "The tumbling characteristics of a 1/20-scale model of the Northrop N-9M airplane have been determined in the Langley 20-foot free-spinning tunnel for various configurations and loading conditions of the model. The investigation included tests to determine whether recovery from a tumble could be effected by the use of parachutes. An estimation of the forces due to acceleration acting on the pilot during a tumble was made. The tests were performed at an equivalent test altitude of … more
Date: January 27, 1947
Creator: MacDougall, George F., Jr.
Item Type: Refine your search to only Report
open access

Lateral Stability Characteristics of a 1/8.33-Scale Powered Model of the Republic XF-12 Airplane

Description: "The XF-12 airplane is a high-performance photo-reconnaissance aircraft designed for the Army Air Forces by the Republic Aviation Corporation. An investigation of a 1/8.33 - scale powered model was made in the Langley l9-foot pressure tunnel to obtain information relative to the aerodynamic design of the airplane. The model was tested with and without the original vertical tail. and with two revised tails. For the revised tail no. 1, the span of the original vertical .tail was increased about 1… more
Date: February 27, 1947
Creator: Pepper, Edward & Foster, Gerald V.
Item Type: Refine your search to only Report
open access

Stick-Fixed Stability and Control Characteristics of the Consolidated Vultee Model 240 Airplane as Estimated from Tests of a 0.092-Scale Powered Model

Description: From Summary: "Estimates of the static stick-fixed stability and control characteristics of the Consolidated Vultee model 240 airplane are presented in this report. The estimates are based on tests of a 0.092-scale powered model in the 10-foot wind tunnel of the Guggenheim Aeronautical Laboratory of the California Institute of Technology. Results of the analysis are evaluated in terms of the Army specifications for stability and control characteristics which are more specific and, in general, e… more
Date: June 27, 1947
Creator: McCullough, George B.; Weiberg, James A. & Gault, Donald E.
Item Type: Refine your search to only Report
open access

Wind-Tunnel Investigation of a 1/5-Scale Model of the Ryan XF2R Airplane

Description: "Wind-tunnel tests on a 1/5-scale model of the Ryan XF2R airplane were conducted to determine the aerodynamic characteristics of the air intake for the front power plant, a General Electric TG-100 gas turbine, and to determine the stability and control characteristics of the airplane. The results indicated low-dynamic-pressure recovery for the air intake to the TG-100 gas turbine with the standard propeller in operation. Propeller cuffs were designed and tested for the purpose of improving the … more
Date: June 27, 1947
Creator: Wong, Park Y.
Item Type: Refine your search to only Report
Back to Top of Screen