Tuesday, August 11, 2009

Rolls-Royce Rolling in the Green

Green Aircraft Engine Design a First for Rolls-Royce


When you think of Rolls-Royce, your first thought may not be aircraft engines. For years Rolls-Royce has been a symbol of luxury in the car industry but a new fuel efficient aircraft engine by the company is catching headlines.
Although still in the development and testing stages, the Rolls-Royce open rotor engine promises as much as a 25% – 30% increase in fuel efficiency. The secret to the technology is the dual fan blades that rotate in opposite directions. The second blade catches and untwists the wind-flow of the first blade for increased efficiency. In addition, the dual propeller blade design reduces the noise associated with propeller engines.
Rolls-Royce is in a unique position. While they are best known for their luxurious cars, they are also producing breakthroughs in green technology. From a public relations perspective this new technology is pure gold (or green if you prefer). If Rolls-Royce continues to push green technology they will be positioned to create a new niche in the aircraft engine industry. They can’t afford to be complacent however, as GE, Airbus, and Boeing all have other green aircraft technologies in the works. If all goes according to plan the Rolls-Royce open rotor engine will be in regular service by 2017.
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X-48B Blended Wing Body Research Aircraft Has Lift-Off



The X-48B Blended Wing Body research aircraft — a joint effort by Boeing, NASA's Fundamental Aeronautics Program and the Air Force Research Laboratory — took off for the first time a few weeks ago, on July 20, 2007, climbing to an altitude of 7,500 ft before landing approximately 31 min later. This plane — a prototype blended wing body (BWB) research aircraft — closely resembles a flying wing though it differs in having its wing blend into a flat, tailless fuselage. This allows the aircraft to gain additional left with less drag — which leads to reduced fuel usage at ideal cruise conditions.
Powered by 3 JetCat P200 turbojet engines, the remote piloted and composite-skinned 500-pound, 21-foot wingspan X-48B can fly up to 10,000 ft and 120 knots in a low-speed configuration and deliver a 27% reduction in fuel consumed per seat mile compared to a conventional aircraft. A pilot located in a ground control station can remotely pilot the vehicle with the help of a forward-looking camera on board by using conventional aircraft controls

NASA is working with Boeing and others to create an aircraft capable of producing significantly less noise due to propulsion integration options and of delivering additional carrying capacity and better aerodynamics for lower fuel consumption. Depending on the results of these initial flights, Boeing estimates that a military cargo version of the X-48B could be ready to go by 2015 - 2020.
Via ::Green Car Congress: X-48B Blended Wing Body Research Aircraft Makes First Flight; Potential for Fuel Savings (blog), :: NASA: X-48B Blended Wing Body Research Aircraft Makes First Flight (news release)
See also: ::Future Planes Might be "Flying Wings", ::Blended Wing Concept 3000 Times Quieter, 35% More Efficient, ::Boeing's Zero-Emission Plane Set To Take Off

NACRE-New Aircraft Concepts Research

Background
Over the past 50 years, the main driver for aircraft design has been to improve operational efficiency, particularly by reducing fuel consumption. Given that air traffic is predicted to more than double in the next 20 years and that both environmental and economic pressures will strongly increase, significant progress will need to be achieved in both improving the efficiency and minimising the environmental impact of aircraft.


This may not be achievable with today’s configuration. In order to provide the step changes required, new aircraft concepts will need to be developed.


Project objectives


The NACRE Integrated Project aims at integrating and validating technologies that will enable new aircraft concepts to be assessed and potentially developed. As such, it will not concentrate on one specific aircraft concept, but is aimed at developing solutions at a generic aircraft component level (cabin, wing, power plant system, fuselage), which will enable the results to be applicable for a range of new aircraft concepts. For each of the major aircraft components, the multidisciplinary investigations will explore the different associated aspects of aerodynamics, materials, structure, engines and systems with the goal of setting the standards in future aircraft design, thus ensuring improved quality and affordability, whilst meeting the tightening environmental constraints (emission and noise), with a vision of global efficiency of the air transport system.


Description of the work


From 2005 to 2009, NACRE proposes to investigate the development of the concepts and technologies required for novel aircraft concepts at a generic aircraft component level: wing, fuselage and engine integration. NACRE will enable the necessary capabilities to be developed and assessed, through their integration and validation on a range of novel aircraft concepts: Low Noise Aircraft, Flying Wing, Low Cost Aircraft.
Thus, in order to explore the most relevant capabilities and meet the widest range of challenges, the NACRE project proposes to identify a set of concepts tailored to address specific subsets of design drivers:
The Pro Green (PG) aircraft concepts, paying major emphasis on the reduction of environmental impact of air travel;
The Payload Driven Aircraft (PDA) concepts, aiming at optimised payload and appreciable quality of future aircraft for the end users;
The Simple Flying Bus (SFB), which puts the biggest emphasis on low manufacturing costs and minimum cost of ownership.
Irrespective of what final future product configurations might look like, these concepts will act as basic vectors, describing and stimulating the whole of future capability developments. More than the intrinsic value of any one concept, what is of importance is the consistent capability enhancement that they prepare.
The rationale is that each of these concepts will allow the exploration of alternative routes for the major aircraft components (fuselage, wing, engine integration) that are better suited to their specific targets and which would have been rejected in a balanced approach. The associated envelope of innovative designs (fuselage, wing, engine integration) and associated technologies will provide better answers to the full range of requirements, or expected ones. NACRE is therefore in essence a focused multi-disciplinary approach.
The NACRE consortium is composed of 35 partners from 13 countries, including Russia, and will take full benefit of the preliminary activities initiated in Europe on novel aircraft concepts in the Fifth Framework programme projects ROSAS, VELA and NEFA.


Expected results


A set of unconventional aircraft concept configurations will be developed:
-Pro Green aircraft
-Payload Driven Aircraft
-Simple Flying Bus.
They will feature advanced components or systems i.e., wings, empennage, power plant installation, fuselage and cabin. These major aircraft components will undergo specific multidisciplinary exercises in order to develop the associated innovative capabilities (aerodynamics, acoustics, structure and systems).
-Integration at overall aircraft level will be carried out in order to challenge the concepts’ objectives.

NASA and Cafe Announce Green Aircraft Challenge

NASA and Cafe Announce Green Aircraft Challenge


WASHINGTON -- The NASA Innovative Partnerships Program and the Comparative Aircraft Flight Efficiency (CAFE) Foundation today announced the Green Flight Challenge. The contest is a flight efficiency competition for aircraft that can average at least 100 mph on a 200-mile flight while achieving greater than 200 passenger miles per gallon. The prize for the aircraft with the best performance is $1.5 million. The competition is scheduled for July 2011 at the Charles M. Schulz Sonoma County Airport in Santa Rosa, Calif. A variety of innovative experimental aircraft using electrical, solar, bio-fuel or hybrid propulsion are expected to enter. Several major universities and aircraft builders have expressed their intention to enter teams in the challenge. To win, teams must use cutting-edge technologies in mechanical and electrical engineering, structures, aerodynamics and thermodynamics. As a national showcase of "green" technology, the challenge is expected to help advance all three of the major climate mitigation initiatives: efficiency, conservation and zero-carbon energy sources. These technologies will support advances in aviation and may have broader applications in transportation and energy storage. The Green Flight Challenge is administered for NASA by CAFE. Founded in 1981, CAFE is a non-profit organization dedicated to advancing the understanding of personal aircraft technologies through research, analysis and education. NASA is providing the prize money as part of the Centennial Challenges program. The program seeks innovative solutions to problems of interest to NASA and the nation from diverse and unconventional sources. Competitors may not receive government funding for their entries in this challenge. For information about CAFE and competing in this challenge, visit:
http://cafefoundation.org/v2/main_home.php

A380 GTL Test Flight Kicks Off Airbus Alternative Fuel Flight Test Program


On Friday, Airbus launched its alternative fuel research program with the 3-hour flight between Filton, UK and Toulouse, France of an A380 fueled by a Gas to Liquids (GTL) blend.
The double-decker A380 is powered by Rolls Royce Trent 900 engines. Shell International Petroleum provided the Shell GTL Jet Fuel. The Airbus tests are running in parallel to the agreement signed in November 2007 with Qatar Airways, Qatar Petroleum, Qatar Fuels, Qatar Science & Technology Park, Rolls Royce and Shell International Petroleum Company to research the potential benefits of synthetic jet fuel processed from gas. (Earlier post.)
This is the first step of a long-term Airbus testing phase to evaluate viable and sustainable alternative fuels for the future. GTL jet fuel could be available at certain locations to make it a practical and viable drop-in alternative fuel for commercial aviation in the short term, according to the company.
Testing GTL today will support future second generation biofuels such as Fischer-Tropsch biomass-to-liquids (BTL), but which are not presently available in sufficient commercial quantities. Airbus says that it will study viable second generation biofuels when they become available.
GTL synthetic jet fuels are currently being developed to meet international standards required for use in aviation under the auspices of the industry-wide Commercial Alternative Aviation Fuels Initiative (CAAFI) of which Airbus, Rolls-Royce and Shell are all members.
The Commercial Aviation Alternative Fuels Initiative (CAAFI) is an aviation industry consortium formed to coordinate the development and commercialisation of drop-in alternative fuels. Under the auspices of the Federal Aviation Administration, the Certification and Qualification panel of CAAFI has outlined a roadmap for alternative fuels approvals including synthetic fuels derived from the Fisher-Tropsch process.
This roadmap supports the approval of a 50/50 semi-synthetic blend of Jet A /A1 according to the ASTM D 1655 fuel/additive approval protocol by late 2008 and a 100% fuel specification by the end of the decade.
Virgin Atlantic is also planning an alternative fuel test—this one with a biofuel—in one of its Boeing 747s for a London to Amsterdam flight this month.

Airbus Promises Green Aircraft By 2020

As the major air carriers in the U.S. are reaching deeper into the wallet of consumers by issuing charges for items like the first checked bag of luggage, or overbooking nearly every flight in the hope that we can be bought off for vouchers to show up and be treated like cattle again later, Airbus is finding their own way to fight the fuel crisis: they’re promised a “green” aircraft by 2020. The move, which is being presented to the press as a small step towards a fossil fuel-free aircraft, is expected to focus on small things, like removing some of the electrical loading from the jet engines, and reducing carbon emissions.

Why Not Go Completely Green And Dump Fuel Costs?

Airbus and Boeing, the last two major manufactures of commercial aircraft in the world, both claim to be investigating the possibility of hydrogen fuel cells powering their aircraft in the near future, and are projecting the development of a carbon-capture system sometime before that. At present, they report that the engines using those technologies would have to be larger than the actual aircraft, a detriment to any device seeking to take flight.
This is bad news not just for the airlines, but for consumers as well, as jet fuel is one of the most difficult to refine from crude, and therefore horribly expensive for the airlines, even ones like Southwest, who have options on their fuel cost carved out for several years in advance. Without a major revolution in technological development, we’re not going to see carbon capture technology until 2030 in an industry as desperate for it as coal–how can it be scaled down to something as small as a jet engine?

What Technology Is Available Right Now?

For the eco-friendly consumer, the tech that’s 20 years away at best isn’t nearly as important as the tech that’s available to fight climate change right now, so what’s out there until Airbus finds a way to shoehorn some clean power plants under wing? Airbus and Boeing both have been working on increasingly fuel-efficient aircraft for years, not because of the environment, but because of the bottom line, and the latest line of aircraft are reaping the benefits: the 787 Dreamliner and A380 generate about 20% less carbon dioxide than their predecessors.
Unfortunately, these new aircraft haven’t been seeing the order numbers that the manufactures would prefer, as the airline industry struggles through some of the worst years in memory–they’re collectively heading for a 6 billion dollar loss this year. With that sort of bottom line, it’s no wonder that the ancient Lockheed L-1011 or Douglas DC-10 are still patrolling the skies, taking as many more flights as the mechanics can squeeze out of their airframes.
This Doesn’t Sound Promising.

What’s A Green Traveler To Do?


= Use e-ticketing instead of paper tickets.
= Pack light, and keep yourself in shape–every pound on that aircraft makes it less fuel- efficient, and you never know–at some point the airlines might start charging for being overweight.
= Fly in newer aircraft. The jump from the L-1011 to the 787 wasn’t made overnight, and as a rule, the newer the aircraft you’re traveling on is, the less harm your trip will do to the planet.

Tuesday, May 19, 2009

How To create GREEN AIRCRAFT????

hOw to create green aircraft? Very good question, but before answer that, first we must give proper definition to the word green aircraft. For me its means aircraft that produce less pollution, either poisonous gas or noise, burning less fuel and production of aircraft itself from environmentally friendly material and system.

To produce less pollution, effort must come radically change in aircraft baseline design configuration and the fuel system. Curruent baseline design create unnecessary drag, especially in tail. This design also create high noise. Jet fuel also produce a lot of CO2 and NOx, which contribute to green house effect and ozone problem.

To burn less fuel, the aircraft must extremely light. Less weight less fuel need to create lift. Composite material maybe one of the answer to this problem. Consider new Boeing 787 Dreamliner which 50% of its structure made from composite.

Manufacturing green aircraft also require green method in its production line. The factory must use energy saving equipment and using electricity from green source such as solar, or wind power. Material itself must be green. Current interest in composite has increase demand for fibreglass and carbon fibre. However this material are hazardous and not easily to dispose. Therefore, current effort must be focus to produce green aircraft.

Tuesday, May 5, 2009

GrEEn Aircraft

As the world moving towards green revolution, when everybody nowadays talk about global warming, kyoto aggreement, carbon foot print, biofuels, etc, there are growing demands for greener aircraft. An aircraft which burn less fuel, emit less CO2 and NOX gas. Therefore, for this month I will post a lot of story, articles and pictures related to green aircraft.

For start, I will write about new aircraft propose by easy jet, known as ecoJET. Nothing radical about this aircraft, except for rotary balade that rotate outside the engine shell (like propeller engine) at the tail wing and forward swept wing.










From these pictures clearly show the forward swept wing and rotary blade place above horizontal tail, attach to the vertical tail with pusher configuration.

EasyJet's plans would put the airline five years ahead of CO2 cuts targeted by aviation body ACARE of 50 percent by 2020, although it plans to more than double its fleet size by then.Easyjet said 25 percent of CO2 emissions would be cut by using open rotor engines, which must be placed above the tail due to their size, while 15 percent would be cut by using the lighter airframe and 10 percent by air traffic control improvements.

"This is not Star Trek technology," as quote from easyJet Chief Executive Andy Harrison."This is technology that is well within our reach. We are talking to Boeing and Airbus. We are working with manufacturers to get this aircraft delivered in 2015.""We are currently spending 4 billion pounds ($7.88 billion) on aircraft -- they are listening to us," he added.

I love the last word, "they are listening to us", WOW!!!! for decades all airlines only take what ever aircraft produced by manufacturer, but today the manufacturer have to listen to the airliner. Maybe few years in the future, we as consumer can told manufacturer and airliner what we really want. anyway bravo Harry, looking forward to fly with that aircraft.

Monday, May 4, 2009

bEauTifuL aIrCrafT

Last week I went to my sister house and the most interesting is her house is near to the airport. So for a week I saw flight comes and goes. One thing that I noticed, current aircraft is too ugly!! UGLY??why?
Yeah, just a tube (fuselage), and wing at the midlle and back. When i look the aircraft that fly in the sky, wah....so not beautiful. So with advance in technology, we have beautiful aerodynamic sport car, why can't we have beautiful aerodynamic sport aircraft. Maybe sport aircraft not a correct word, but don't we had any which we can called as beautiful aircraft.
So., I surf and what I can say that I only found 2 aircraft that I can call it beautiful. One is CONCORDE, which is passenger supersonic aircraft. Another one is B2 Spririt bomber, stealth bomber used by USAF. So enjoy the picture, and if you've got other beautiful aircraft just let me know.(hei...please not concept design aircraft kay, i'm worry you it might be jet in star wars movies). Maybe later i will write about these 2 aircraft in detail...

Concorde....look at the nose, seriously can bend like that??






B2 SpiRit.....seriously like boomerang