Structural testing for static failure, flutter and other scary things

Ground test and flight test methods are described that may be used to highlight potential structural problems that occur on aircraft. Primary interest is focused on light-weight general aviation airplanes. The structural problems described include static strength failure, aileron reversal, static divergence, and flutter. An example of each of the problems is discussed to illustrate how the data acquired during the tests may be used to predict the occurrence of the structural problem. While some rules of thumb for the prediction of structural problems are given the report is not intended to be used explicitly as a structural analysis handbook

Experimental aeroelasticity history, status and future in brief

NASA conducts wind tunnel experiments to determine and understand the aeroelastic characteristics of new and advanced flight vehicles, including fixed-wing, rotary-wing and space-launch configurations. Review and assessments are made of the state-of-the-art in experimental aeroelasticity regarding available facilities, measurement techniques, and other means and devices useful in testing. In addition, some past experimental programs are described which assisted in the development of new technology, validated new analysis codes, or provided needed information for clearing flight envelopes of unwanted aeroelastic response. Finally, needs and requirements for advances and improvements in testing capabilities for future experimental research and development programs are described

A review of homelessness and homelessness services in East Dorset

This report reviews the nature and extent of homelessness in East Dorset. In particular it focuses on: - Existing levels of homelessness; - The causes of homelessness within the local authority area; - Current service provision for homeless people/households; - Identifying gaps in the provision of current services. Reflecting the local authority’s desire to develop a more pro-active and preventative approach to addressing housing need, this report identifies a number of strategies that it may wish to adopt in ensuring that this particular aspect of housing need is tackled effectively, with targeted resources aimed at preventing and addressing homelessness issues

Mapping and Developing Service Design Research in the UK.

This report is the outcome of the Service Design Research UK (SDR UK) Network with Lancaster University as primary investigator and London College of Communication, UAL as co-investigator. This project was funded as part of an Arts and Humanities Research Council Network grant. Service Design Research UK (SDR UK), funded by an AHRC Network Grant, aims to create a UK research network in an emerging field in Design that is Service Design. This field has a recent history and a growing, but still small and dispersed, research community that strongly needs support and visibility to consolidate its knowledge base and enhance its potential impact. Services represent a significant part of the UK economy and can have a transformational role in our society as they affect the way we organize, move, work, study or take care of our health and family. Design introduces a more human centred and creative approach to service innovation; this is critical to delivering more effective and novel solutions that have the potential to tackle contemporary challenges. Service Design Research UK reviewed and consolidated the emergence of Service Design within the estalished field of Design

A review of homelessness and homelessness services in Weymouth and Portland

This report reviews the nature and extent of homelessness in the Borough of Weymouth and Portland. In particular, it focuses on: Existing levels of homelessness; The causes of homelessness within the local authority area; Current service provision for homeless people/households; Identifying gaps in the provision of current services. Reflecting the local authority’s desire to develop a more pro-active and preventative approach to addressing housing need, this report identifies a number of strategies that it may wish to adopt in ensuring that this particular aspect of housing need is tackled effectively, with targeted resources aimed at preventing and addressing homelessness issues

A survey of homelessness and homeless services in West Dorset: A way forward

This report reviews the nature and extent of homelessness in West Dorset District Council (WDDC). In particular it focuses on: • exploring current levels of homelessness; • identifying the causes of homelessness within the local authority area; • gauging current service provision for homeless people/households; • identifying gaps in the provision of current services. In an attempt to reflect the local authority’s desire to develop a more proactive and preventative approach in addressing housing need, this report identifies a number of strategies that it may wish to adopt to ensure that this particular aspect of housing need is tackled effectively

Aeroelastic instability stoppers for wind tunnel models

A mechanism for diverting the flow in a wind tunnel from the wing of a tested model is described. The wing is mounted on the wall of a tunnel. A diverter plate is pivotally mounted on the tunnel wall ahead of the model. An actuator fixed to the tunnel is pivotably connected to the diverter plate, by plunger. When the model is about to become unstable during the test the actuator moves the diverter plate from the tunnel wall to divert maintaining stable model conditions. The diverter plate is then retracted to enable normal flow

Responding to homelessness in North Dorset: A snapshot of current service provision and an estimate of service needs

This report reviews the nature and extent of homelessness in NorthDorset. In particular, it focuses on: - Existing levels of homelessness; - The causes of homelessness within the local authority area; - Current service provision for homeless people/households; - Identifying gaps in the provision of current services. Reflecting the local authority’s desire to develop a more pro-active and preventative approach to addressing housing need, this report identifies a number of strategies that it may wish to adopt in ensuring that this particular aspect of housing need is tackled effectively, with targeted resources aimed at preventing and addressing homelessness issues

A fluid flow perspective on the diagenesis of Te Aute limestones

Pliocene cool-water, bioclastic Te Aute limestones in East Coast Basin, New Zealand, accumulated either in shelfal shoal areas or about structurally shallow growth fold structures in the tectonically active accretionary forearc prism. Up to five stages of carbonate cementation are recognised, based on cement sequence-stratigraphic concepts, that formed on the seafloor during exposure of the limestones before burial, during burial, uplift, and deformation. Two principal fluid types are identified--topography-driven meteoric fluids and compaction-driven fluids. We have developed conceptual and quantitative models that attempt to relate the physical characteristics of fluid flow to the cement paragenesis. In particular, we have simulated the effects of uplift of the axial ranges bordering East Coast Basin in terms of the degree of penetration of a meteoric wedge into the basin. The dynamics of meteoric flow changed dramatically during uplift over the last 2 m.y. such that the modelled extent of the meteoric wedge is at least 40 km across the basin, and the penetration depth 1500 m or more corresponding with measured freshwater intersections in some oil wells. Cement-fluid relationships include: (1) true marine cements that precipitated in areas remote from shallow freshwater lenses; (2) pre-compaction cements that formed in shallow freshwater lenses beneath limestone "islands"; (3) post-compaction cements derived from compaction-driven flow during burial; (4) early uplift-related fracture-fill cements formed during deformation of the accretionary prism and uplift of the axial ranges; and (5) late uplift-related cements associated with uplift into a shallow meteoric regime