Staff publications (SoE)
Permanent URI for this collection
Browse
Browsing Staff publications (SoE) by Type "Report"
Now showing 1 - 4 of 4
Results Per Page
Sort Options
Item Open Access Modelling, imaging and measurement of distortion, drag and break-up of aircraft- icing droplets(2005-01-01T00:00:00Z) Luxford, Geoffrey; Hammond, David W.; Ivey, Paul C.The distortion, drag and break-up of supercooled drizzle droplets in aircraft icing was investigated in ambient conditions. An effective efficient computer procedure was developed for the distortion and drag of small droplets, < 1mm, at low Reynolds numbers, < 1000, and high Weber numbers, > 10. High-speed videos and photographs were obtained with an improved high-intensity LED strobe. Experimental measurements validated the drag model for droplets distorted by a rapidly accelerating airflow in a convergent wind tunnel. To prevent droplet coalescence, due to wake interactions, droplets were generated with a steady jet impinging of a rotating slotted disk.Item Open Access A production system variable connectance model(Cranfield Institute of technology, 1984-02) Burbidge, John L.Item Open Access Role of droplet distortion and break-up in large droplet aircraft icing(2004-01-01T00:00:00Z) Luxford, Geoffrey; Hammond, David W.; Ivey, Paul C.Experimental and analytical evidence is presented to illustrate droplet distortion and potential break-up in the flow conditions similar those of a drizzle droplet in the vicinity of an aerofoil. The droplet size range considered is 100u m to 500u m. The current research is at ambient temperature but with equivalent parametric conditions to SLD icing. While the results support the contention that smaller droplets, <100u m, remain essentially spherical, the larger droplets become sufficiently distorted to affect their drag characteristics and can break up due to the transient aerodynamic forces.Item Unknown UK Aviation: Carbon Reduction Futures. Final Report to the Department for Transport.(2009-07-01T00:00:00Z) Morris, Joe; Rowbotham, Alex; Morrell, Peter; Foster, Andy; Poll, Ian; Owen, Bethan; Raper, David; Mann, Mike; Ralph, MalcolmThe objective of this study, commissioned by the Department for Transport, is to determine the scope for, and cost of actions that can be taken by, the UK domestic aviation sector to reduce its emissions of CO2. This involves estimating the cost of achieving CO2 abatement to help ensure that the most cost effective measures can be identified. For the purposes of this project UK domestic aviation refers to internal passenger flights within the UK only. The timeframe considered is the period 2007 to 2050. Given the timeframes involved and the evidence available, the costs and benefits of abatement options in this report are to be considered illustrative and represent broad orders of magnitude only. They are nonetheless indicative of the potential for abatement and relative costs.