8,257 research outputs found
arctica
No full textCherleria arctica (Steven ex Seringe) A.J. Moore & Dillenbergerarctic stitchwortminuartie arctiqueMt. Fairplay - Taylor Hwy #5.T. Chisholmopen mountain slope
A.J. Moore from Butler, Indiana and His Prize Sheep at the 1946 State Fair
No full textA.J. Moore, from Butler, Indiana with his first prize Shropshire flock, grand champion ram and reserve champion ewe
An investigation into wing in ground effect aerofoil geometry
No full textSummaryThis paper details experimental results from wind tunnel studies of a DHMTU 12-35.3-10.2-
80.12 and NACA 0012 section operating in ground effect. It was found that the drag of the
DHMTU 12-35.3-10.2-80.12 increased with decreasing altitude, contrary to expectations and
superior lift performance to the NACA 0012 baseline section was generated. The DHMTU
possesses superior L/D at low angles of attack when in ground effect. These experimental studies
have illustrated the unique aerodynamic characteristics of the DHMTU 12-35.3-10.2-80.12 and
indicated areas for further optimisation of the design of ground effect airfoils
A review of pedestrian facilities
No full textV.M. Moore & A.J. McLeanhttp://trove.nla.gov.au/work/2150326
Marriage record of Prince, A. J. and Moore, Hannah
No full textMarriage license for A.J. Prince and Hannah Moore. P.A. Daniels was the officiant
Drag Reduction by Applying Speedstrips on Rowing Oars
No full textAbstractThe objective of this study was to determine the advantage of the application of speedstrips to rowing oars for a lightweight single sculler. The research method comprehended three steps: (1) the analysis of the rowing oar movement, (2) the determination of the change in drag and (3) the composition of a rowing model to establish the advantage that could be achieved. The parameters needed for the model: boat velocity, oar angle velocity and power delivered by the rower, were recorded on a real single sculler. The change in drag due to speedstrips on cylinders was determined by performing wind tunnel experiments. The rowing model (Matlab) simulates a race by using real stroke data of a world-class rower as input, while calculating the drag with the coefficients determined by the wind tunnel experiments. The output of the model is the final advantage by the application of speedstrips to rowing oars. Speedstrips induce a 0.1% advantage over a 2000 m race under calm wind conditions. The advantage increases up to .4% with a headwind velocity of 5 m s-1. For bigger boats, the advantage could be even more significant
Drag and Power-loss in Rowing Due to Velocity Fluctuations
No full textAbstractThe flow motions in the turbulent boundary layer between water and a rowing boat initiate a turbulent skin friction. Reducing this skin friction results in better rowing performances. A Taylor-Couette (TC) facility was used to verify the power losses due to velocity fluctuations PV′ in relation to the total power , as a function of the velocity amplitude A. It was demonstrated that an increase of the velocity fluctuations results in a tremendous decrease of the velocity efficiency eV . The velocity efficiency eV for a typical rowing velocity amplitude A of 20 – 25% was about 0.92 – 0.95%. Suppressing boat velocity fluctuations with 60% will increase boat speed with 1.6%. Riblet surfaces were applied on the inner and outer cylinder wall to indicate the drag reducing ability of such surfaces. The results of the measurements at constant velocity are identical as the results reported earlier, while the experimental configuration was different. This confirms once more the consistency of the TC-system for drag studies. The maximum drag reduction DR was 3.4% at a Reynolds number Res 4.7 × 104, which corresponds to a shear velocity in this TC-system with water of V 4.7 m/s. For typical rowing velocity fluctuations, the riblets maintain to reduce the drag with 2.8% and corresponds to a averaged velocity increase of 0.9%. The drag reducing ability of riblets is partly lost due to velocity fluctuations with high amplitudes (A > 20%). From these results, it is concluded that the friction coefficient Cf will vary within one cycle. Higher acceleration/deceleration leads to a additional level of turbulent kinetic energy
Weather radar and hydrology: a UK operational perspective
No full textWeather radar forms an essential and integral tool for water management in the UK, especially for monitoring and warning of flooding: the main focus of this perspective paper. An overview is first given of the radar network and its associated rainfall data products used by the environment agencies responsible for flood defence. The Hyrad (HYdrological RADar) system is deployed to receive, visualise and analyse these products, and to further process them for use within flood forecasting systems. Regional systems employ networks of models configured to make forecasts at specific locations. Very recently, countrywide systems employing an area-wide G2G (Grid-to-Grid) hydrological model have been implemented. Both types of system, used operationally in a complementary way, are reviewed in relation to their use of, and demands for, weather radar-related data. Activity on implementing probabilistic approaches to flood forecasting which benefit from using radar in ensemble rainfall prediction is outlined, and future prospects discussed
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