Japanese tits have previously been observed combining different calls into phrases to convey meanings. The birds may also use their wings to signal to their partner that they should enter the nest ...

European researchers have used scaled aircraft demonstrators to test new concepts for lighter, larger-span wings intended to avert flutter problems. The ground vibration tests were conducted at a ...

As Boeing’s 787 illustrates, airliner wings are more slender than they used to be. But as wings get slimmer in pursuit of lower drag and lighter weight, flutter becomes a greater concern. Flutter is ...

The northern flicker is an unusual woodpecker that delights us while it spends the winter in much of South Texas, from San Antonio to Houston. One might assume the bird, which is among the largest of ...

IN 1928 a monograph on the “Flutter of Aeroplane Wings”, by Messrs. R. A. Frazer and W. J. Duncan, was produced at the National Physical Laboratory, summarising in a single useful volume the work that ...