Wind Tunnel Test of the Conversion Process of a Folding Tilt-Rotor Aircraft Using a Semispan Unpowered Model. Volume 4. Part 2. Blade Stress Analysis, Bench Tests, and Wind Tunnel Model Details

1971 ◽  
Author(s):  
John Magee ◽  
Robert Taylor
Keyword(s):  
Wind Tunnel ◽  
Stress Analysis ◽  
Wind Tunnel Test ◽  
Conversion Process ◽  
Wind Tunnel Model ◽  
Bench Tests ◽  
Tilt Rotor ◽  
Tunnel Model

J0501-3-4 Optimization of aerodynamic shape using deformable wind tunnel model for wind tunnel test

2009 ◽  
Vol 2009.7 (0) ◽  
pp. 29-30
Author(s):  
Futoshi NAGAMINE ◽  
Hiroaki KISHIGE ◽  
Mitsuru IKEDA ◽  
Takeshi MITSUMOJI ◽  
Masahiro SUZUKI
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Wind Tunnel Model ◽  
Aerodynamic Shape ◽  
Tunnel Model

Current Drag From Tow and Wind Tunnel Tests of a FLNG Hull

2016 ◽  
Author(s):  
Zhenjia (Jerry) Huang ◽  
Jang Kim ◽  
Hyunchul Jang ◽  
Scott T. Slocum
Keyword(s):  
Boundary Layer ◽  
Wind Tunnel ◽  
Model Test ◽  
Cfd Simulation ◽  
Wind Tunnel Test ◽  
Model Tests ◽  
Additional Contribution ◽  
Wind Tunnel Model ◽  
Tunnel Model ◽  
Current Drag

In this paper, the current drag of a barge-shaped floating liquefied natural gas (FLNG) vessel was studied. Three model tests were performed — a wind tunnel model test, a submerged double-body tow test and a surface tow test. Computational fluid dynamics (CFD) simulations were carried out to gain further insights into the test results. During testing, the tow speed was kept low to avoid surface waves. When the current heading was around the beam current direction, the transverse drag coefficient measured from the wind tunnel test was significantly lower than those of the submerged tow and surface tow tests. The submerged tow and the surface tow provided similar drag coefficients. Results presented in this paper indicated that the difference between the wind tunnel test and the tow tests was caused by the wind tunnel boundary layer effect on the incoming wind profile and formation of a recirculation zone on the upstream side of the model, with a possible additional contribution from the wind tunnel floor constraint on the flow in the wake. Such effects are not accounted for with the simple corrections based on flow velocity reduction in the wind tunnel boundary layer. When conducting future wind tunnel model tests for barge-shaped FLNG hulls, one should consider the potential under-measurement of the transverse drag. In this paper, details of the FLNG model, test setup, test quality assurance (QA), measurement and CFD simulation results are presented, as well as discussions and recommendations for model testing.

scholarly journals Design and Optimization of an Aeroservoelastic Wind Tunnel Model

Fluids ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 35 ◽  
Author(s):  
Johannes K. S. Dillinger ◽  
Yasser M. Meddaikar ◽  
Jannis Lübker ◽  
Manuel Pusch ◽  
Thiemo Kier
Keyword(s):  
Finite Element ◽  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Objective Functions ◽  
Dynamic Identification ◽  
Wind Tunnel Model ◽  
Design And Optimization ◽  
Aeroelastic Model ◽  
Tunnel Model ◽  
Gust Load Alleviation

Through the combination of passive and active load alleviation techniques, this paper presents the design, optimization, manufacturing, and update of a flexible composite wind tunnel model. In a first step, starting from the specification of an adequate wing and trailing edge flap geometry, passive, static aeroelastic stiffness optimizations for various objective functions have been performed. The second optimization step comprised a discretization of the continuous stiffness distributions, resulting in manufacturable stacking sequences. In order to determine which of the objective functions investigated in the passive structural optimization most efficiently complemented the projected active control schemes, the condensed modal finite element models were integrated in an aeroelastic model, involving a dedicated gust load alleviation controller. The most promising design was selected for manufacturing. The finite element representation could be updated to conform to the measured eigenfrequencies, based on the dynamic identification of the model. Eventually, a wind tunnel test campaign was conducted in November 2018 and results have been examined in separate reports.

scholarly journals Aeroservoelastic Wind-Tunnel Test of the SUGAR Truss Braced Wing Wind-Tunnel Model

2015 ◽  
Author(s):  
Robert C. Scott ◽  
Timothy Allen ◽  
Mark Castelluccio ◽  
Bradley Sexton ◽  
Scott Claggett ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Wind Tunnel Model ◽  
Tunnel Model

scholarly journals Inter-Facility Correlations of Transonic Test Results of the AGARD-C Standard Wind-Tunnel Model

2018 ◽  
Vol 5 (13) ◽  
pp. 26476-26481
Author(s):  
Dijana Damljanović ◽  
Jovan Isaković ◽  
Marko Miloš
Keyword(s):  
Wind Tunnel ◽  
Test Results ◽  
Wind Tunnel Model ◽  
Tunnel Model

Evaluation of an I-box wind tunnel model for assessment of behavioral responses of blow flies

2013 ◽  
Vol 112 (11) ◽  
pp. 3789-3798 ◽  
Author(s):  
Kittikhun Moophayak ◽  
Kabkaew L. Sukontason ◽  
Hiromu Kurahashi ◽  
Roy C. Vogtsberger ◽  
Kom Sukontason
Keyword(s):  
Wind Tunnel ◽  
Behavioral Responses ◽  
Wind Tunnel Model ◽  
Blow Flies ◽  
Tunnel Model

scholarly journals Numerical Investigation of Wind-Tunnel Model Deformations Caused by the Twin-Sting Support System

2010 ◽  
Vol 47 (2) ◽  
pp. 708-714 ◽  
Author(s):  
Roberto Flores ◽  
Enrique Ortega ◽  
Eugenio Oñate
Keyword(s):  
Wind Tunnel ◽  
Numerical Investigation ◽  
Support System ◽  
Wind Tunnel Model ◽  
Tunnel Model
Sign in / Sign up

Export Citation Format

Share Document