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Wind-Tunnel Investigation of a 1/5-Scale Model of the Ryan XF2R AirplaneWind-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 recover3- for the air intake to the TG-100 gas turbine ~rith the standard propeller in operation. Propeller cuffs were designed and tested for the purpose of imp~oving the dynamic-pressure recovery. Data obtained with the cuffs installed and the gap between the spinner an& the cuff sealed indicated a substantial gain in dynamic pressure recovery over that obtained with the standard propeller and with the cuffed propeller unsealed. Stability and control tests were conducted with the sealed cuffs installed on the propeller. The data from these tests indicated the following unsatisfactory characteristics for the airplane: 1. Marginal static longitudinal stability. 2. Inadequate directional stability and control. 3. Rudder-pedal-force reversal in the climb condition. 4. Negative dihedral effect in the power-on approach and wave-off conditions.
Document ID
20090026606
Acquisition Source
Legacy CDMS
Document Type
Other - NACA Research Memorandum
Authors
Wong, Park Y.
(National Advisory Committee for Aeronautics. Ames Aeronautical Lab. Moffett Field, CA, United States)
Date Acquired
August 24, 2013
Publication Date
June 27, 1947
Subject Category
Aerodynamics
Report/Patent Number
NACA-Rm-SA7E26
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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