Thursday, April 30, 2015
Friday, April 24, 2015
Thursday, April 23, 2015
Wednesday, April 22, 2015
In an exclusive partnership with Aero Vodochody and Williams International, Draken International is now offering next generation upgrades on L-39 aircraft in the Americas.
Based in Lakeland, Florida, Draken International is a leading provider of tactical flight support as well as maintenance, repair and overhaul (MRO) services.
The L-39 upgrade program, or L-39NG upgrade, enables owners of Aero Vodochody L-39 aircraft in the Americas to implement a number of powerful enhancements to deliver significant improvements in performance, technological capability, aircraft availability and safety.
The L-39NG upgrade adds many modern and advanced capabilities that are critical for 21st century aviation. The key new feature is the light and fuel-efficient Williams International FJ44-4M turbofan engine, which delivers improved performance at speed, range and endurance.
Further, a new electric starter allows the original APU to be removed with all its components, saving considerable weight. In the cockpit, new digital instruments are added as well as OEM overhauled ejection seats with fresh pyro. Additionally, a full IRAN of all major systems brings the aircraft up to current OEM compliance.
The upgrade offers numerous benefits:
- Decreased fuel consumptionby approx. 15%
- Decreased maintenance costs– "Support by the hour" program fully covers scheduled maintenance, unscheduled maintenance, and foreign object damages
- Improved acceleration time– 3-5 seconds from idle to max vs. 9-12 seconds on existing AI-25TL engine
- Quicker maintenance turnaround– Major periodic inspections of FJ44-4M take 4 weeks vs. 4-6 months for overhaul of original AI-25TL engine
- Decreased aircraft weightby approx. 330 lbs. due to lighter engine and removal of heavy APU and balance weight
Tuesday, April 21, 2015
Bertrand Piccard is flying the zero-fuel airplane on about 1190km (642NM) for an estimated time of 17 hours.
The airplane have been stuck in Chongqing for the last 20 days, following unfavourable weather conditions. From Nanjing the SI2 will proceed to Hawaii, US one of the longest duration flight.
Sunday, April 19, 2015
Saturday, April 18, 2015
Friday, April 17, 2015
Thursday, April 16, 2015
Wednesday, April 15, 2015
US Navy Office of Naval Research (ONR) is displaying a prototype, tube-launched swarming naval UAV, developed as a part of the Low-Cost UAV Swarming Technology (LOCUST) program at the annual Sea-Air-Space Exposition April 13-15, which takes place at the Gaylord National Resort and Convention Center, Maryland.
Dubbed the 'Cheel', the UAS program is a collaborative project under the India-United States Defense Technology and Trade Initiative (DTTI), announced during US President Barack Obama's visit to India in Jan 2015.
The Cheel will be jointly developed and produced by pooling in Dynamatic's advanced Indian manufacturing and engineering capabilities along with AeroVironment's unique UAV design skills, application expertise and global support services.
In February a pilot production plant was inaugurated. The facility houses an advanced avionics and communications laboratory, payload development facility, composite facility as well as an assembly and testing facility for small Unmanned Aerial Systems.
The Cheel will be offered to Indian Armed Forces and will be equipped with surveillance sensors for ISR roles.
The RQ-11 Raven is a hand launched UAS introduced in 2003 with US military. More than 19000 has been built since then, and is now widely operated by other countries.
The RQ-11B Raven UAV weighs about 1.9 kg (4.2 lb), has a flight endurance of 60–90 minutes and an effective operational radius of approximately 10 km (6.2 miles).
UAV can provide day or night aerial intelligence, surveillance, target acquisition, and reconnaissance. Standard mission payloads include CCD color video cameras and an infrared night vision camera.
The Raven lands itself by auto-piloting to a pre-defined landing point and then performing a 45° slope (1 foot down for every 1 foot forward) controlled "Autoland" descent.
Incidently, India's National Aerospace Ltd has already built a Raven class UAV called the Slybird.
Tuesday, April 14, 2015
Monday, April 13, 2015
The LEAP-1A is one of the two engine choices for the re-engined and improved A320neo (new engine option) along with the Pratt and Whitney PurePower PW1100 Geared Turbofan engine.
The PW1100 GTF powered A320neo achieved maiden flight in last September. The second Pratt & Whitney powered A320neo joined the fleet at the end of March. The LEAP powered A320neo will now proceed to ground tests ahead of first flight later this year.
The CFM LEAP family represents the engines of choice for the next-generation single-aisle aircraft. The LEAP-1A is an option on the Airbus A320neo; the LEAP-1B is the exclusive powerplant for the Boeing 737 MAX; and the LEAP-1C is the sole Western powerplant for the COMAC C919.
The 24,500-32,900 pounds thrust class LEAP-1A boasts up to 15% improvement in fuel efficiency compared to today's best CFM56 engines along with improved dispatchability and low maintenance.
Two engine families have contributed significantly to the design of the LEAP engine, the CFM56 and the GE90/GEnx series of engines. The GE90/GEnx contributed the high-efficiency core architecture to minimize fuel consumption, while the CFM56 legacy drove reliability and maintenance cost design practices.
The LEAP features lighter fan blades made of composite materials using proprietary woven 3D RTM (Resin Transfer Molding) process. These new composites on fan blades and other componenets reduce weight of each aircraft by about 1000 pounds (450 kg).
The new engines along with other improvements will result in a per seat fuel burn saving of 20 per cent compared to current engine option (CEO) A320 jetliners, along with additional range, reduced engine noise and lower emissions.
The LEAP is expected to enter revenue service in 2016 on the Airbus A320neo. CFM is 50-50 joint venture between GE and French Snecma.
Sunday, April 12, 2015
Image Credit:GE Aviation
The new engine design called ADVENT (Adaptive Versatile Engine Technology), can switch between high power and high efficiency modes, operating effectively and efficiently over a wide range of flight conditions, from subsonic to supersonic speeds.
Present fighter jets use sleek and narrow supersonic engines called low-bypass turbofans to generate enormous thrust by compromising fuel efficiency. They are called low bypass because over 90 percent engine air inlet goes through the engine core. However commercial passenger jets use bigger high-bypass turbofans, which are fuel efficient and low noise due to high bypassing of inlet air.
The ADVENT engine combines both the high bypass and low bypass architecture into one , through a innovative architecture that shifts air flow between the core, the main bypass, and a third stream to achieve thrust, optimal performance, and fuel efficiency.
|Animation showing GE ADVENT switching between high bypass and low bypass engine|
One of the key technologies behind the adaptive-cycle engine is the adaptive fan, which allows the engine to vary its bypass ratio depending on its altitude and speed.
At cruising speeds, the third air intake pathway is used to increase the amount of bypass air around the engine’s core, which boosts propulsive efficiency.
The Adaptive Engine program aims to achieve a 25 percent fuel efficiency improvement with the extra fuel enough to provide a 30 percent increase in operating range, and a five-to-ten percent improvement in thrust compared to today's fixed-cycle engines.
The idea dates back to the 1960s, when German jet engine pioneer Gerhard Neumann realized that he could manage jet engine performance by controlling the amount of air that flows through the engine core. More flow yields more thrust and speed (that’s good for fighter jets); less flow saves fuel.
The new adaptive cycle engine is building on the YF120, GE’s first variable cycle engine prototype built and flight tested in the 1990s. The engine lost to what became the Pratt & Whitney F119 that powers the Lockheed Martin F-22 Raptor.
USAF selected GE for the ADVENT program in 2012. GE began testing the ADVENT demonstrator engine in November 2013, six years after development began in 2007.
The team last year achieved the highest temperature ever recorded inside a jet engine core, surpassing engine target temperatures by more than 130 degrees Fahrenheit. To take the heat, GE has developed new heat resistant materials called ceramic matrix composites(CMCs).
The AFRL’s follow-on Adaptive Engine Technology Development (AETD) program is intended to bring the technologies developed under ADVENT into a flight-worthy design.
The AETD program will build off these and other demonstrations to mature these technologies in preparation for eventual low-risk transition into combat aircraft in the 2020 timeframe.
GE will continue to mature the ADVENT technologies through the AETD program, which will conclude in 2016 following fan rig testing and a core engine test.
Pratt & Whitney's AETD program will lead to demonstration testing of an advanced high-pressure ratio core in early 2016, to be followed later in 2016 by full engine testing of a three-stream adaptive fan and three-stream compatible augmentor and exhaust system.
Major benefit of the adaptive cycle engine will be the reduced demand for deployed fuel and tanker aircraft support, hence reducing operational cost.
While US Air Force has its ADVENT, AETD and NextGen programs to develop next generation engine technology, the Navy has its Variable Cycle Advanced Technology (VCAT) program looking to adapt these technology for naval aviation.
Saturday, April 11, 2015
Mitsubishi Aircraft Corp confirmed that its MRJ regional jet's maiden flight will be delayed to the third quarter of 2015 from second quarter.
The company says to fully incorporate the verification results of the various ground tests and related feedback into the first flight test aircraft, the first flight has to be scheduled for September or October.
The engine runs of the first prototype has begun in last January. Presently static strength testing and manufacture of the second and subsequent flight test aircraft are all proceeding smoothly.
Mitsubishi Heavy Industries, Ltd. (MHI) and Mitsubishi Aircraft Corp jointly released their latest status report on Friday, concerning progress in developing the MRJ (Mitsubishi Regional Jet).
Effective from April 1 MHI and Mitsubishi Aircraft launched a new management structure to facilitate transition of the MRJ project from the development stage to the manufacturing phase, and under the new framework initiatives are moving forward towards more unified operations. Prior to inauguration of the new structure, in January Mitsubishi Aircraft relocated its complete Head Office functions to the Nagoya Airport Terminal Building (Toyoyama-cho, Aichi Prefecture) next to where the MRJ’s final assembly, ground testing and flight test are performed.
MHI and Mitsubishi Aircraft will implement intensive flight test after the first flight and accelerate manufacture of the aircraft towards first delivery, as scheduled, during the second quarter of 2017.
MHI's Kobe Shipyard & Machinery Works will integrally produce parts for wings, which will be brought to the Nagoya Aerospace Systems Works' Tobishima Plant (Ama District, Aichi Prefecture) for fabrication on dedicated assembly lines being newly constructed.
In tandem with these initiatives, a production collaboration association to produce aircraft parts will be established, and a cluster is in the process of being formed at the Matsusaka Plant in Mie Prefecture, to undertake integrated production of parts for commercial aircraft in a collaborative manner.
Mitsubishi Heavy Industries Aero Engines, Ltd. in Komaki, Aichi Prefecture, a group company of MHI, will perform final assembly of the MRJ's Pratt and Whitney PurePower PW1200 Geared Turbofan engines.
To control and manage the physical distribution of the vast number of items involved, a real-time network linking all production facilities in Japan and worldwide suppliers will be established.
The MRJ is a family of 70- to 90-seat next-generation regional jets which has won orders for 407 units, including 223 firm. The MRJ's rollout ceremony was held last October.
Earlier MRJ's maiden flight was first scheduled for 2013 third quarter and first delivery this year.
Thursday, April 9, 2015
The British attempt at setting 1000 MPH land-speed record with the Bloodhound SSC jet and rocket powered car took a step closer to completion with the integration of the supersonic Eurojet EJ200 jet engine, that powers the Eurofighter Typhoon multi role fighter jet into the chassis of the world’s fastest car.