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Wednesday, May 20, 2020 | History

2 edition of Wind tunnel tests of a wing fitted with a single lifting fan found in the catalog.

Wind tunnel tests of a wing fitted with a single lifting fan

Nigel Gregory

Wind tunnel tests of a wing fitted with a single lifting fan

by Nigel Gregory

  • 204 Want to read
  • 4 Currently reading

Published by H.M.S.O. in London .
Written in English

    Subjects:
  • Lift fans.,
  • Fan-in-wing aircraft.,
  • Lift (Aerodynamics)

  • Edition Notes

    Bibliography: p. 17-18.

    Statementby N. Gregory, W. G. Raymer, and Edna M. Love.
    Series[Great Britain] Aeronautical Research Council. Reports and memoranda, no. 3457, Reports and memoranda (Aeronautical Research Council (Great Britain)) ;, no. 3457.
    ContributionsRaymer, W. G., joint author., Love, Edna M., joint author.
    Classifications
    LC ClassificationsTL526.G7 A4 no. 3457
    The Physical Object
    Pagination62 p.
    Number of Pages62
    ID Numbers
    Open LibraryOL5570654M
    LC Control Number67078657

    Cross flow wind tunnel performance tests of 15 in. wing installed lift fan with coaxial drive turbine for VTOL transport aircraft. Wind tunnel test showing the formation of a wingtip vortex using Helium Bubbles. The formula used to calculate the lift-induced drag produced by a wing is a function of the square of the lift-coefficient. Induced drag therefore increases exponentially with an increase in the lift coefficient and so is most prevalent at low speed where the lift.

      The computer program simulates the operation of a wind tunnel and a student must test wing "models" in the tunnel to determine an optimum design. There are 31 models available for testing which duplicate the models used by the Wright brothers in Each model can be tested on both the lift balance and the drag balance. Aeroelasticity is the branch of physics and engineering that studies the interactions between the inertial, elastic, and aerodynamic forces that occur when an elastic body is exposed to a fluid flow. The study of aeroelasticity may be broadly classified into two fields: static aeroelasticity, which deals with the static or steady state response of an elastic body to a fluid flow; and dynamic .

      The wind tunnel was a simple open-return design with a fan pushing a flow of air through an enclosed square box and then exiting into the room. Models of their wings were placed in the test section of the wind tunnel, at the far left in the figure, on a . 1. Wind Tunnel Fundamentals. A wind tunnel is a tool used in aerodynamic research to study the effects of air moving past solid objects. A wind tunnel consists of a tubular passage with the object under test mounted in the middle.


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Wind tunnel tests of a wing fitted with a single lifting fan by Nigel Gregory Download PDF EPUB FB2

Results are given of wind-tunnel tests of a square wing with a lifting fan of 1/44th the wing area located at chord. Forces and pressure distributions were measured both on the bare wing and with plain. Results are given of wind-tunnel tests of a square wing with a lifting fan of 1/44th the wing area located at chord.

Forces and pressure distributions were measured both on the bare wing and with plain and split flaps, A loss of flap effectiveness is noted for a very limited combination of plain flap deflection and advance ratio.

The Reynolds number per foot ranges from 0 to x Test section airflow is produced by a 40 feet diameter, 9-bladed fan powered by a 12, horsepower solid-state converter with synchronous motor. The tunnel has a set of flow control vanes to maintain close control of the speed for low-speed testing.

October, Summary. Part I describes tests on a streamlined body with a lifting fan mounted normally to its axis. Mos[ of the tests were made in the 5 ft x 4 ft wifidtunnel at Imperial College, and others in the No. 1 11½ ft x 8½ ft.

tunnel at Size: 2MB. Wind tunnel tests of a wing fitted with a single lifting fan. Gregory, W. Raymer and Edna M. Love ARC/R&M December, Results are given of wind-tunnel tests of a square wing with a lifting fan of 1/44th the wing area located at chord.

allows the wing to be built as a simple lifting surface without ailerons. Fig. 6 FanWing model with OHS tails Fig. 7 Twin-tail OHS model High-Speed Wing Section Design The fixed wing section of FanWing has recently been modified following a series of 2-D and 3-D wind tunnel tests of many alternative fan and wing Size: KB.

WIND TUNNEL - Experiments using configurations based on the UIUC two-element airfoil were performed at the University of Illinois at Urbana-Champaign Low-Speed Wind Tunnel. The wind tunnel is a conventional open-return type with a contraction ratio of and test section dimensions of x m.

The test section diverges Cited by: Results are given of wind-tunnel tests of a nacelle-shaped body fitted with two lifting fans in tandem. Lift, drag and pitching moment were measured both. Unformatted text preview: Homework 6 Solutions ( Consider a model of a wing—body shape mounted in a Wind tunnel; The flow ‘1' conditions in the test section are standard sea-level properties with a velocity of The wing area and chord are m2 and m, respectively.

Using the wind tunnel force and moment—measuring balance, the moment. The flow characteristics over a symmetrical airfoil are studied experimentally in a low speed wind tunnel.

The pressure distribution on the airfoil surface was obtained, lift and drag forces were measured and mean velocity profiles were obtained over the surface. Wind tunnel testing of adaptive wing/aircraft structures has been carried out at TSAGI with the aim of investigating, demonstrating and assessing novel concepts, enabling cost-effective aerodynamic designs through the use of adaptive/morphing wings, and weight reduction through the realization of smart structures and the use of aeroelastic by: 3.

A DIY Wind Tunnel built by Ian Kelley & I. Special thanks to my friend, Pranav for taking this footage with his awesome camera. A pressure wing is mounted vertically in the wind tunnel. The pressure tubes (18 with locations indicated in the Appendix) from the wing are connected to the inlet nipples of the tunnel pressure transducer array sampling system.

The static pressure of the test section isFile Size: KB. "Aerodynamic force tests were made on a combination of a Clark Y wing and a narrow auxiliary airfoil to find the best location of the auxiliary airfoil with respect to the main wing.

The auxiliary was a highly cambered airfoil of medium thickness having a chord per cent that of the main wing. It was tested in different positions ahead of, above, and behind the nose portion of Cited by: 3.

grams require wind tunnel testing, it is especially neces-sary for the fan-in-wing configuration. Large amounts of air, which affect the pressures on both the upper and lower surfaces of the wing, are drawn through the fan-in-wing location.

Also, when operated near the ground, additional significant pressure changes occur on the fuse-lage and wing. Aerodynamicists use wind tunnels to test models of proposed aircraft and engine components.

During a test, the model is placed in the test section of the tunnel and air is made to flow past the model. Various types of instrumentation are used to determine the forces on the model.

There are four main types of wind tunnel tests. configurations: (i) the closed wing without fan set as reference, (ii) one single fan installed either at the rear (Fig.

2) or in the front part of the wing and (iii) two fans placed symmetrically with respect to the half chord. The geometry modeled in the numerical simulation is the one presented in Fig.

2 for a single fan at the wing rear part. Revised October • NREL/SR Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines.

Period of Performance: Octo –Janu Michael S. Selig and Bryan D. McGranahan. University of Illinois at. center of the test section, whose trailing edge is located about mm downstream of the end of the test section and wing is suspended by the support of the both rib and wind tunnel test section side wall.

The Reynolds number Re was defined on the basis of the wing cord length (c) and free stream flow velocity (U∞). Free-stream velocity of File Size: 1MB. Thisallows the wing to be built as a simple liftingsurface without 6 FanWing model with OHS tails Fig.

9 Baseline (top) and two high-speed sections Wind tunnel tests of the 2-D model did indeed show that the CLmax values were little changed, but the longer section was found to have less drag and a much improved thrust margin at.

Wind tunnel tests of a wing fitted with a single lifting fan Nigel Gregory Not In Library. Wind tunnel tests on a streamlined fan-lift nacelle James Ernest Hackett Not In Library.

Wind tunnel experiments on a lifting jet in a bluff body with and with W. J. G. Trebble Not In Library.and Rizal Effendy Mohd Nasir () [2] have conducted ‘Wind Tunnel Experiments and CFD Analysis of Blended Wing Body (BWB) UAV at Mach and Mach ’. This work shows the Steady-state, three- dimensional Computational Fluid Dynamics (CFD) of the BWB at Mach and Wind Tunnel experiments on 1/6 scaled half model of the BWB at Mach File Size: 1MB.Fig 6 FanWing model with OHS tails Fig 7 Twin-tail OHS model Wing Section and Tip Design.

The wing section of FanWing has recently been modified following a series of 2-D wind tunnel tests of many alternative fan and wing combinations, FigFile Size: KB.