A power-driven aircraft that is kept buoyant by a body of gas (usually helium, formerly hydrogen) which is lighter than air.
example - Academics are developing ways to replace satellites and mobile telephone masts with solar-powered airships for better and cheaper telecommunications.
A cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, salamanders, and caecilians. They are distinguished by having an aquatic gill-breathing larval stage followed (typically) by a terrestrial lung-breathing adult stage.
example - Spadefoot toads are desert-dwelling amphibians that breed opportunistically in short lived pools filled by periodic rainfall.
An early type of aircraft with two pairs of wings, one above the other.
example - These are fearless people who are strapped to rigs on the top wing of a 1940s biplane while the aircraft performs a sequence of loops, rolls and turns in front of air show crowds across the country.
An internal combustion engine in which heat produced by the compression of air in the cylinder is used to ignite the fuel.A heavy petroleum fraction used as fuel in diesel engines.
example - Within the bureau and the fleet, Moffett concentrated on the development of patrol and scouting seaplanes and dirigibles, airplane technology and logistics, aircraft carriers, and naval air stations.
An aircraft equipped with floats for landing on water; a seaplane.
example - After some thought, the Navy gave up the idea of retractable gear and instead specified that the aircraft would be floatplanes but could be converted to land gear in a short period of time.
A balloon filled with gas that is lighter than air; especially (now frequently historical) one supporting beneath it a basket for passengers. Often contrasted with hot-air balloon.
A light aircraft that is designed to fly without using an engine.
example - While most gliders are towed, then released, by a powered aircraft, some gliders are equipped with engine power to reach their target altitude.
A person or thing that glides.
example - the flying lemur is an efficient glider as well as climber
A long swinging seat suspended from a frame in a porch.
example - She flopped back down into the glider, setting it swinging wildly for a moment.
A type of aircraft which derives both lift and propulsion from one or more sets of horizontally revolving overhead rotors. It is capable of moving vertically and horizontally, the direction of motion being controlled by the pitch of the rotor blades.
example - One of the helicopter"s rotor blades had smashed into the crag, showering the rescuers with fragments of rock.
verb
Transport by helicopter.
example - he was helicoptered out with a bleeding ulcer
Relating to or denoting a balloon or other aircraft weighing less than the air it displaces, and so flying as a result of its own buoyancy.
example - The present invention relates generally to the field of lighter-than-air ships and more particularly to a airship that uses hydrogen as a lift gas.
A light fuel oil that is obtained by distilling petroleum and used in internal combustion engines.
example - petrol fumes
A shade of greenish or greyish blue.
example - Harmer sells a range of contemporary pendant lighting, including the Icon glass dome light shades, in colours from petrol blue to cardinal red, priced £109.
example - I have been fortunate to have had the opportunity of spinning a variety of aircraft, from military trainers and fighters to general aviation aircraft, aerobatic aircraft and sailplanes.
A jet engine in which the jet gases also operate a turbine-driven compressor for compressing the air drawn into the engine.
example - Rather than using a rotating compressor like a turbojet engine, the forward velocity and vehicle aerodynamic design compress air into the engine.
example - The job done by the police helicopter could be almost as well done and at considerably less cost by a specialist twin-engined aircraft such as the Cessna 337 Skymaster or the Brittan Norman Islander.
A large German dirigible airship of the early 20th century, long and cylindrical in shape and with a rigid framework. Zeppelins were used during the First World War for reconnaissance and bombing, and after the war as passenger transports until the 1930s.
example - Relics from a golden age of flight when Zeppelins and airships ruled the skies have been on sale at a Swindon auction house.