ESDU 99014:2003
$89.05
Aerofoil and Wing Pitching Moment Coefficient at Zero Angle of Attack Due to Deployment of Trailing-Edge Double-Slotted and Triple-Slotted Flaps at Low Speeds
| Published By | Publication Date | Number of Pages |
| ESDU | 2003-01-01 | 39 |
ESDU 99014 predicts for aerofoils the centre of lift position based on thin-aerofoil theory with empirical correction. This is combined with the predicted increment in aerofoil lift coefficient from ESDU 94031 to estimate the pitching moment coefficient increment. For wings with full-span trailing-edge double-slotted or triple-slotted flaps, factors dependent on planform geometry are applied to the pitching moment coefficient increment on an aerofoil section that is representative of the wing in order to allow for three-dimensional effects. For wings with part-span trailing-edge flaps, additional factors are introduced that are dependent on the wing taper ratio and on the spanwise extent to the flaps,
and the effect of wing aspect ratio and sweep is also accounted for in the procedure. The method applies in free air and at Mach numbers below 0.2.
Sketches illustrate the accuracy of prediction and tables give the ranges of parameters covered in the construction of the method. For aerofoils, 90 per cent of the data for the position of the centre of the lift increment are predicted to within 0.02 of chord length and 90 per cent of the data for the pitching moment coefficient increment are predicted to within 0.04. For wings, 86 per cent of the data for the pitching moment coefficient increment are predicted to within 0.04. Worked examples illustrate the use of the method.
Related products
-
ESDU 79014:2007
Losses Caused by Friction in Straight Pipes with Systematic Roughness Elements Published By Publication Date…
-
ESDU 99011:2003
Thermal Conductivity, Viscosity, Isobaric Specific Heat Capacity and Prandtl Number of Gases at Low Pressure:…
-
ESDU 99019:2003
Constrained Multivariate Optimisation Techniques for the Design of Aerofoil Sections Published By Publication Date Number…
-
ESDU 99012:2005
Thermal Conductivity of Liquids: Aliphatic Diesters Published By Publication Date Number of Pages ESDU 2005-09…
-
ESDU 99034:2008
Transonic Aerodynamics Series Organization: Preface, Location Schedule, Amendment Record Published By Publication Date Number of…
-
ESDU 99010:2005
Supersonic base drag of cylindrical bodies with a central propulsive jet Published By Publication Date…
-
ESDU 99004:2003
Aerofoil and wing pitching moment coefficient at zero angle of attack due to deployment of…
-
ESDU 89014:2004
Normal force, pitching moment and side force of forebody-cylinder combinations for angles of attack up…
-
ESDU 99013:2005
Thermal Conductivity of Liquids: Glycols, Glycerol and Their Aqueous Solutions Published By Publication Date Number…
-
ESDU 09014:2013
Elastic Stress Concentration Factors. Geometric Discontinuities in Flat Bars or Strips of Isotropic Material Published…
-
ESDU AERO F.08.01.02:2003
Increment to C sub m sub zero due to flaps on swept-back wings Published By…
-
ESDU AERO F.08.01.01:2003
Pitching moment coefficient increment due to flaps for unswept wings Published By Publication Date Number…
