Engineers print a functioning 1.5m-wide prototype unmanned aerial vehicle. (Phys.org) —Engineers at the Advanced Manufacturing Research Centre (AMRC) at the University of Sheffield have successfully printed a 1.5m-wide prototype unmanned aerial vehicle (UAV) for a research project looking at 3D printing of complex designs. The engineers said the polymer craft could form the basis of cheap and potentially disposable UAVs that could be built and deployed in remote situations potentially within as little as 24 hours.
Earlier versions required significant amounts of support material around component parts to prevent the airframe structures from deforming during the build process. Using support material adds a direct material cost, and significantly increases build time, in some cases by an order of magnitude. This is a result of the machine having to change between build and support structure heads after each printed layer. The UAV has already completed a test flight as a glider. The Sheffield UAV comprises nine parts that can be snapped together. MIT Daedalus. The MIT Aeronautics and Astronautics Department's Daedalus was a human-powered aircraft that, on 23 April 1988, flew a distance of 71.5 mi (115.11 km) in 3 hours, 54 minutes, from Iraklion on the island of Crete to the island of Santorini.
The flight holds official FAI world records for total distance, straight-line distance, and duration for human-powered aircraft. The craft was named after the mythological inventor of aviation, Daedalus, and was inspired by the Greek myth of Daedalus' escape from Crete using manmade wings. There were actually three aircraft constructed: Light Eagle (originally Michelob Light Eagle): a 42 kg (92 lb) prototype.Daedalus 87: Crashed during testing at Rogers Dry Lake (NASA Dryden Flight Research Center) on 17 February 1988, and was rebuilt as a backup.Daedalus 88: Flew from Crete to just off the beach on Santorini. Both Daedalus 87 and Daedalus 88' weighed 31 kg (69 lb).
History Aircraft Light Eagle Daedalus 87 Daedalus 88 Solar Impulse plane's trans-America bid continues. The Solar Impulse plane has set a new distance record for solar-powered flight on the second leg of its trans-American journey on Wednesday evening. The craft landed in Dallas, Texas, after an 18-hour flight from Phoenix, Arizona - a journey of 1,541km (958mi). In the coming weeks, it will also stop over in St Louis, Missouri, and Washington DC before heading to New York in early July. The project aims to showcase the capabilities of renewable energy.
The Solar Impulse HB-SIA has the same wingspan as an Airbus A340 but at a weight of just 1.6 tonnes - by comparison, a fully laden A340 weighs about 370 tonnes. The plane's wing and stabiliser are covered with nearly 12,000 solar cells, which drive its four propellers and charge the plane's 400kg of lithium-ion batteries for night-time flying. The Across America bid is billed as the first cross-continental flight by a solar-powered craft capable of flying in hours of daylight and darkness. Quantum Levitation. GT4 e-hybrid airplane. Volta Volaré has begun taking orders for its four-seater GT4 hybrid private aircraft it calls "the most technologically advanced private aircraft available anywhere on Earth.
" Though the GT4 is perfectly capable of taking off and flying powered only electrically, a gas engine starts when the airplane's battery drops to 25 percent capacity in order to recharge it mid-flight. Surprisingly, perhaps, Volta Volaré makes a strong economic case for the GT4. Because the powertrain has only one moving part - the motor or "EViation Drive" - the company claims the need for maintenance is reduced significantly, offering increases in TBO (time between overhaul) by up to a factor of ten when compared to a combustion engine. It also claims that the EViation Drive "delivers more torque and horsepower than any 20th century internal combustion engine," but since the 21st century is now at least 11 years old, that seems a somewhat arbitrary comparison. Ornithopter. An ornithopter in flight.
Cybird radio-controlled ornithopter Early history of the ornithopter Some early manned flight attempts may have been intended to achieve flapping-wing flight though probably only a glide was actually achieved. These include the flights of the 11th-century monk Eilmer of Malmesbury (recorded in the 12th century) and the 9th-century poet Abbas Ibn Firnas (recorded in the 17th century). Roger Bacon, writing in 1260, was also among the first to consider a technological means of flight.
In 1485, Leonardo da Vinci began to study the flight of birds. He grasped that humans are too heavy, and not strong enough, to fly using wings simply attached to the arms. The first ornithopters capable of flight were constructed in France. From 1884 on, Lawrence Hargrave built scores of ornithopters powered by rubber bands, springs, steam, or compressed air. He introduced the use of small flapping wings providing the thrust for a larger fixed wing. E.P. E.P. Cool muscles: Storing elastic energy for flight.
(Phys.org) —Flying has always fascinated humans, probably because we are so relentlessly Earthbound. One of the things that interests researchers who study flight is the question of how animals that do it can generate the energy required. Flying is an intensely power-hungry activity that is less than 10% efficient. Some studies have suggested that physical properties of the molecules involved in insect flight might contribute small amounts of energy to the flight "power grid" through potential energy savings in the form of elastic strain energy. Insight into this question has been provided by research completed at the Biophysics Collaborative Access Team (Bio-CAT) beamline 18-ID at the U.S.
Department of Energy's Advanced Photon Source (APS) at Argonne National Laboratory. The breakthrough in this work was the development of an apparatus that allowed the team to make high-speed x-ray diffraction measurements at the same time as they measured wing-muscle motion mechanics. Ultralight aviation. Huntair Pathfinder Mark 1 ultralight K-10 Swift - MKI Quicksilver MXII P and M Aviation Quik GT450 ultralight Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1 or 2 seat fixed-wing aircraft. Some countries differentiate between weight shift and 3-axis aircraft, calling the former "microlight" and the latter "ultralight". During the late 1970s and early 1980s, mostly stimulated by the hang gliding movement, many people sought affordable powered flight.
In most affluent countries, microlights or ultralight aircraft now account for a significant percentage of the global civilian-owned aircraft. Definitions Australia In Australia Recreational Aircraft fall under many categories, but the most common category imposes: A maximum take-off weight (MTOW) of 600 kg (1,323 lb) or less (614 kg (1,354 lb) for a seaplane).A stalling speed under 45 knots (83 km/h; 52 mph) in landing configuration.A maximum of two seats.
Brazil Canada Martin Jetpack. The Martin Jetpack is an experimental aircraft. Though its tradename uses the phrase "jet pack," the craft uses ducted fans for lift. Martin Aircraft Company of New Zealand developed it, and they unveiled it on July 29, 2008 at the Experimental Aircraft Association's 2008 AirVenture in Oshkosh, Wisconsin, USA.
The Federal Aviation Administration classifies it as an experimental ultralight airplane. It uses a gasoline (premium) engine with two ducted fans to provide lift. Its design claims a 60 mile per hour maximum speed, an 8,000 foot flight ceiling, with a flight time about 30 minutes on a full fuel tank. The jetpack could be available on the market as soon as 2014, and is expected to sell for approximately NZ$150,000, with the initial production model aimed at military and "first responder" emergency crews such as firefighters. History The Martin Jetpack has been under development for over 30 years. Description Version 2 Safety features Flight testing Your own helicopter for under US$20,000. September 21, 2005 Flying is not a sport generally associated with those people who are light of wallet – which makes the Mosquito Ultralight helicopter something of a rarity.
The entire kit for the Mosquito can be purchased for US$20,000 and if you think the minimalist Mosquito leaves you a bit vulnerable, there’s the fully enclosed Mosquito XE and XEL which can be purchased for US$23,000 apeice. Building the kits will cost you about 200 to 300 hours to build or you can have the plane built for you for a flat US$4000. Getting airborn for under US$20,000 in your own, new helicopter is quite a feat – we’re not aware of any other helicopter in this price category and on top of that, both Mosquito variants offer very low maintenance and operating costs.
View all The Mosquito’s designer John Uptigrove is a mech engineer by trade and like a lot of people alwaysdreamed of being able to fly. The birds are typically used for “recreational flight for the most part,” says Uptigrove. Micro air vehicle. Naval Air Weapons Station China Lake, California - The RQ-16 T-Hawk, a Micro Air Vehicle (MAV), flies over a simulated combat area during an operational test flight.
The MAV is in the operational test phase with military Explosive Ordnance Disposal (EOD) teams to evaluate its short-range scouting capabilities. A simulation screenshot of a "bumblebee-sized" MAV proposed by the U.S. Air Force in 2008 A micro air vehicle (MAV), or micro aerial vehicle, is a class of unmanned aerial vehicles (UAV) that has a size restriction and may be autonomous. Modern craft can be as small as 15 centimetres. Development is driven by commercial, research, government, and military purposes; with insect-sized aircraft reportedly expected in the future.
The small craft allows remote observation of hazardous environments inaccessible to ground vehicles. Bio-inspiration A new trend in the MAV community is to take inspiration from flying insects or birds to achieve unprecedented flight capabilities. Boeing CH-47 Chinook. Design and development Early development In late 1956, the United States Department of the Army announced plans to replace the Sikorsky CH-37 Mojave, which was powered by piston engines, with a new, turbine-powered helicopter. Turbine engines were also a key design feature of the smaller UH-1 "Huey" utility helicopter.
Following a design competition, in September 1958, a joint Army–Air Force source selection board recommended that the Army procure the Vertol medium transport helicopter. However, funding for full-scale development was not then available, and the Army vacillated on its design requirements. HC-1B during in-flight evaluation Vertol began work on a new tandem-rotor helicopter designated Vertol Model 107 or V-107 in 1957. In June 1958, the U.S. A CH-47 in a training exercise with US Navy Special Warfare, in July 2008 Improved and later versions A CH-47F practicing the Pinnacle maneuver whereby soldiers are deposited without the helicopter landing.