Helicopters
Coaxial Rotor System: the future of helicopter design?
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Helicopters featuring coaxial rotor designs are not exactly new. The co-axial design of a pair of rotors mounted on the same mast and with the same axis of rotation, but turning in different directions, has been utilized on a number of military helicopters for around half a century, most notably those produced by the Russian Kamov helicopter design bureau. The coaxial design offers a number of advantages over the traditional helicopter designs, which makes it difficult to understand why we haven’t seen co-axial rotor designs taking to the skies for civilian uses. Now Australian based Wieland Helicopter Technologies (WHT) is hoping to change that by designing and manufacturing a range of new coaxial rotor system small format helicopters for commercial markets. Read More
Autonomous unmanned helicopters designed for disaster relief
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European researchers are developing a squadron of co-operating, unmanned helicopters for use in disaster management, civil security, and filmmaking. In addition to ferrying critical supplies, the helicopters can deploy sensor nodes to gather information and establish a communications network in places where the infrastructure is damaged or absent. Read More
Presidential helicopter achieves new milestone
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The first operational pilot production aircraft in the VH-71 presidential helicopter program has successfully completed its 40-minute maiden flight. The PP-1 is the first of five VH-71 production aircraft that will be tested during phase one of the US$6.1 billion presidential helicopter replacement program. Read More
Sikorsky’s X2 Demonstrator First Flight
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August 28, 2008 Three years ago we wrote of Sikorsky’s intention to build a technology demonstrator for its X2 Coaxial helicopter technology, and earlier this year we expanded on the principals of the revolutionary aircraft. Today, we’re pleased to announce “it flies.” Earlier this week, Sikorsky successfully completed the first flight of its X2 Demonstrator, maneuvering the prototype aircraft through hover, forward flight, and a hover turn, in a test flight that lasted approximately 30 minutes. Read More
Milestone for Sikorsky X2 helicopter
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June 2, 2008 Helicopter development is hampered by the fact that for so long it has been a zero sum game, with designers only able to improve forward speed at the expense of hovering ability and low speed control, and vice versa. This, combined with other inherent design restrictions, has kept the top cruise speed for conventional helicopters at roughly 150—170 knots. Looking to overcome these limitations, Sikorsky Aircraft Corp. is working on a coaxial design aimed at realizing a cruising speed of 250 knots. The X2 technology demonstrator can hover, land vertically, manoeuvre at low speeds, and transition seamlessly from hovering to forward flight. In the words of Sikorsky’s president, Jeffrey Pino, it could prove to be a real ‘game changer’ for the industry. Read More
Hummingbird achieves 18 hour flight milestone
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Gizmag first reported on Boeing’s A160T Hummingbird Unmanned Rotorcraft back in 2005 and again in 2007 when the craft made its first flight. Now the craft has come very close to achieving the original 20 hour flight times envisioned (and unofficially broken a world record for unmanned aerial vehicles along the way) by remaining in the air for 18.7 hours. Read More
Falx to debut hybrid-electric tilt-rotor aircraft with inbuilt solar charging
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Tilt-rotor aircraft have been around since the 1950s, offering the vertical take-off, hovering and landing abilities of a helicopter with the range, high flight ceiling, speed and fuel economy of a turboprop aeroplane. Now a new venture from Falx Air Vehicles is planning to push the fuel economy angle even further by using a hybrid-electric motor and inbuilt solar arrays. The company expects its upcoming compact single and double-seater tiltrotor aircraft to use as little as 10 litres of fuel per hour airborne, and the quiet electric operation should see these small, light and manoeuvrable aircraft make solid stealth vehicles for military uses. Though not yet confirmed, we may see a full-size prototype as early as the Farnsworth air show this year, and Falx is aiming to have the craft fully certified by the end of 2009. Read More
"All-environment" visibility solution for helicopters successfully trialled
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October 8, 2007 Helicopter pilots are often faced with demanding environmental conditions that make navigation difficult and lead to grounding of the aircraft as the only safe option – fog, cloud, rain and snow along with flying over featureless terrain or “brownout” conditions caused by dust all present problems for pilots, particularly when landing. International defence company QinetiQ has developed and successfully flight trialled a solution that integrates a range of imaging technologies into a single system with the aim of expanding the operational envelope of the aircraft under these circumstances. Read More
Headland’s innovative retractable helipads for yachts
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Increasingly, yacht buyers are demanding the ability to land a helicopter on deck – but not all yachts have sufficient clear deck space free for a designated helipad. France’s Headland Consulting are solving this issue Transformers-style with a range of very clever retractable landing pads that deploy mechanically to suit a wide range of different yacht and helicopter sizes. Read More
New Chinook unveiled at Fort Campbell
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August 21, 2007 Aviation history was made at Fort Campbell recently as a newly designed CH-47 Chinook helicopter was officially ushered into operation. Allowing greater capability and Soldier safety, the new $30 million bird was turned over to Company B, 7th Battalion, 101st Aviation Regiment, 159th Combat Aviation Brigade. Read More
Boeing's CH-47F Chinook helicopter fielded to first U.S. Army Unit
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Aug 16, 2007 Boeing has announced that its new CH-47F Chinook helicopter has been certified combat-ready by the U.S. Army and fielded to the first operational unit. Since being first unveiled in mid 2006, the new Chinook has successfully completed 60 rigorous flight test hours including simulated mission scenarios. Read More
Presidential helicopter aces maiden test flight
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July 9, 2007 The new American presidential helicopter will be the most technologically advanced in the world, offering the most powerful leader on the planet a virtual "oval office in the sky." With ground-breaking safety, efficiency, defense and communications features built in, the Lockheed-Martin VH-71 fleet will have nearly double the cabin space of the current Sikorsky VH-3 Sea Kings that are reaching the end of their service life. The US$6.1 billion project recently completed an impressive maiden flight, up to a ground speed of around 155mph, and "Marine One" is expected to go into an Initial Operational Capacity by late 2009... a few months too late for George Bush to get a ride. Read More
