Hints and tips:
...Last December, the MoD announced a £129mn replacement contract for the Desert Hawks, with a mix of more than 250 fixed-wing Stalker and Indago multi-rotor drones, mainly for the army, which are due to enter...
...CFM is developing an open-rotor jet engine — a design with visible fan blades that are not enclosed as those on current jet engines....
...Their aircraft have rotors for vertical take-off and landing. But they mostly also have wings capable of sustaining level flight....
...The switch between their two modes is called transition: when their rotors or, in Lilium’s case jets, swivel horizontally in mid-air and the wings start to provide lift....
...It is nice that most prototypes now have wings — far handier than rotors for staying aloft when the power cuts out. But we still dislike the weight-to-energy characteristics of their batteries....
...While some have focused on helicopter-like vehicles, others are developing ones with fixed wings and rotor fans that tilt. The companies’ aims for their vehicles also vary....
...The company is developing an aircraft that has fixed wings with 36 rotor fans that can tilt downwards for vertical take-off and then forwards for flight....
...Lilium in contrast is developing an aircraft that has fixed wings with rotor fans that can tilt downwards for vertical take off and then forwards for flight....
...The rotor blade of light is clearly a techno-menace and the dancers are cowed and dominated by it....
...Josh Hawley, the Republican from Missouri, referred to those 2017 remarks, saying that they incorporated the “terminology of anti-Catholic bigotry”....
...The best-sellers are the various styles of pyramid, with rows of nativity figures and topped by a rotor, often powered by hot air from candles beneath....
...But following three years in the Israeli air force, Neri initially took another path. “I trained first as a medical doctor for two years, then as an architect,” she says....
...Casic’s competitor,China Aerospace Science and Technology Co (Casc) came with its own flying wing UAV, the CH-7, as well as the CH-10, its first tilt rotor vertical take-off drone....
...their feet, before flying off en masse across the huge setting sun, like a Japanese sumi-e painting, the only sound that of the beat of their giant wings....
...The Transition air vehicle has already flown as a prototype. But this is really a light aircraft with folding wings that you can drive to a local airstrip....
...In some cases these are effectively real-life versions of Chitty Chitty Bang Bang — four-wheeled machines that drive on the road with wings that sprout on demand....
...It was unexpectedly difficult to build the computer that turns the pilot’s movements on a joystick into commands for the six motors powering the rotor blades on the machine’s three wings....
...rotors on stubby wings alongside the cabin....
...This overcomes the problem facing traditional rotor designs — that, beyond a certain speed, each rotor catches up with the vacuum created by its predecessor and runs out of air to push....
...the body of the helicopter rotating in the opposite direction to the main rotor but also to pull the whole aircraft forward through the air....
...The room has more the air of a geeky science club than a hushed couture atelier. In the corner is a Hussein Chalayan dress from which paper pollens fly on wires....
...A few years later, the company’s Huey model was one of the stars of the Vietnam conflict, helping to redefine the role of air power in complex, asymmetric warfare....
...Based closely on an existing helicopter, the AS365 Dauphin, it had a main rotor plus two forward-facing propellers on the end of stubby wings to pull it through the air as well as provide the anti-torque...
...Mr Sannié explains that the unit generates air pressure within thedevice equivalent to 174 decibels of sound pressure level (SPL)....
...Early prototypes of Project Wing are 1.5m wide and 0.8m tall, featuring a combination of fixed-wing and rotors to stay airborne. The vehicle hovers at a height of between 40m and 60m....
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