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CORRECTION of night test climb data to account for departure of the variables from standard or specified conditions presents a major problem owing to the large number of parameters involved. Atmospheric conditions invariably depart from standard I.C.A.N., and seldom do values of aircraft weight, speed and r.p.m. agree with those specified in a theoretical consideration of the problem. This article describes a method used to analyse climb data whereby climb performance of an aircraft may be established for specified conditions, speed for best rate of climb determined and comparison made with theoretical estimates. Rigid flying procedure is not required, and flying time is reduced to a minimum.

In the study or VTOL aircraft, the lifting fan is usually associated with fairly low values of jet velocity, in fact with velocities such that compressibility effects are not appreciable and therefore can be neglected. Some local compressibility effects may occur, at the fan tip, for instance, but such conditions should be avoided and need not affect consideration of the overall performance problem. Many important conclusions can therefore be reached by means of a simplified analysis which clearly illustrates the relationship between the significant parameters. In this simplified approach, consideration is given to the effects of duct losses and forward speed since both these factors are particularly important in the design of both VTOL aircraft and ground effect machines.

Recovery Colleges were developed to support the recovery of people with mental health difficulties through courses co-produced by professionals and people with lived experience. This study aims to examine the use of Recovery Colleges to support people with dementia.

A survey was circulated to UK Recovery College and memory service staff, exploring provision, delivery and attendance of dementia courses. Open responses provided insight into participant views about recovery in post-diagnostic support and the practicalities of running dementia courses.

A total of 51 Recovery College staff and 210 memory service staff completed the survey. Twelve Recovery College dementia courses were identified across the UK. Three categories emerged from the qualitative data: post-diagnostic support, recovery in the context of dementia, challenges and areas of innovation.

This study highlights the benefits and practicalities of running Recovery College courses with people with dementia. Peer-to-peer learning was seen as valuable in post-diagnostic support but opinions were divided about the term recovery in dementia.