Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A separate gas- or air-filled compartment within the main envelope of a balloon or airship, designed for the maintenance or adjustment of the envelope's shape, buoyancy, or orientation.
- ‘As a rule, such airships have a soft structure of a ballonet and consequently a considerable drag.’
- ‘Besides, it is possible to go to the fore and aft set of the ballonets and into the gas volume.’
- ‘Therefore ballonets are needed for semi-rigid airships to keep the envelope pressure constant.’
- ‘That latitude is provided in the form of collapsible air bags, called ballonets, inside the helium envelope.’
- ‘When the ballonets are filled with air, the dense air contained within different balloons but the same envelope as the helium has an effect on the buoyancy.’
- ‘The altitude at which all air has been removed from the ballonet is referred to as the pressure altitude.’
- ‘Air is pumped in to or out of these ballonets to adjust the helium pressure.’
- ‘This triggers an automatic mechanism that pumps air into the ballonet compartment to compensate.’
- ‘The envelope is a helium gas cell, with an air ballonet which is pressurized by a ballonet fan.’
- ‘The pressure inside the ballonet acts on the helium inside the envelope to maintain the shape.’
- ‘As a rigid airship, it had no need of ballonets, which are used only in pressure airships, or blimps.’
- ‘Unless perfectly synchronized, dual ballonets tend to tip the craft toward the tail or nose.’
- ‘Air is squeezed out of the ballonets as the gas expands with increasing altitude and forced back in again as the helium contracts when the airship descends.’
- ‘The initial design of the ballonet size will determine an individual airship's maximum change of altitude capability.’
- ‘The ballonet is an airtight bag which allows the density of the blimp to be adjusted by adding or releasing air.’
- ‘The two air chambers inside the envelope called ballonets can be expanded and contracted to add or subtract weight from the nose or the tail, trimming the airship.’
- ‘Prior art methods of pressurizing and filling the ballonets typically involved the use of ram air scoops.’
- ‘The pressure of the helium in the envelope is adjusted by changing the amount of air in the ballonets.’
- ‘The pilot controls the ballonet, so there is no need to ‘valve off’ the expensive helium gas.’
- ‘The helicopter is fitted with ballonet flotation devices for emergency landing on water.’
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.