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saurabh vats
posted a thread.
What does engine burrying means?
What does engine burrying means?
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Stopping the rotation of tire....one reason is for aircraft's control over gyroscopic imbalance....and if still the wheel rotates inside wheel well,it causes rubber strips to be stored inside the well.the nose gear goes fwd so there is no gyroscopic effect. the tire still needs to stop spinning. that's why there is a spin brake in the wheel well. if there is a wheel well fire the gear is dropped out again to blow the fire out. you also don't want 200 mph tires spinning in the well
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saurabh vats
posted a thread.
ANA Will Replace 100 Engines on Its 787 Dreamliners
ANA announced that it will replace 100 engines on its fleet of Boeing 787 Dreamliners after a series of engine failures caused by corrosion and cracking of engine blades. The Japanese airline will swap out all of the Rolls-Royce engines on 50 of its 787s, a process that could take three years, according to an ANA spokesperson. ANA currently has five engines that need new repairs but “will replace all the 100 engines for enhanced safety measures,” the company said. The airline has already repaired three engines. Some of the damage to the engines has been caused by chemicals in the atmosphere, and the problem gets worse as an aircraft completes more flights, ANA said. The airline has already canceled 18 flights due to the problem and four of its 787s remain grounded. The airline does not expect any further cancellations through mid-September.
$2 billion to replace all Rolls Royce engines.
saurabh vats
replied on Parul Sethi's thread "How Recycling of cabin air done in Aircraft ?".
Cabin air is drawn by electric fans through HEPA filters, which remove bacteria and other organic matters. The air is then passed into a mixing unit, where it is mixed with air from the packs. This re-oxygenates the recycled cabin air, while the recycled air helps to humidify the fresh air.Air from toilets and galleys is drawn by a separate duct and vented directly to the atmosphere.Reusing cabin air reduces the operating costs, as the reduction of air taken from the engines increases the engines’ efficiency.On an A320 for example the system is designed to replace the total cabin air up to 30 times per hour with approximately 50% fresh air and 50% recycled air
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saurabh vats
posted a blog.
September 4, 2016
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India first aviation university may start its academic session in July 2017
India’s first aviation university may start its academic session from July next year and hire overseas professionals, said government officials aware of the development.
The setting up of the Rajiv Gandhi National Aviation University (RGNAU), aimed to promote aviation studies, flying training, teaching and research, may help address the chronic shortage of talented professionals in the sector. The Indian aviation sector is estimated to have a human resource requirement of over 330,000 personnel by 2025.
“The university is currently being built within the 239-acre premises of the Indira Gandhi Rashtriya Uran Akademi (IGRUA), located at Fursatganj in Raebareli district, Uttar Pradesh. About 26.35 acres of land has been identified for the purpose and first-phase development has started,” said a senior aviation ministry official requesting anonymity.
The move to establish a national aviation university is in line with the New Civil Aviation Policy, 2016, announced by the National Democratic Alliance (NDA) government in June this year. However, the institution, scheduled to commence training of aspiring pilots, aircraft engineers and cabin crew by July this year, could not start operations on time.
“State-run developer Airports Authority of India (AAI) is currently constructing the facility, which is expected to be completed by March 2017,” the official added.
Key study areas to be focused upon by RGNAU, a central autonomous university under the ministry of civil aviation, include aviation management, regulation and policy, aviation science and engineering, aviation law, safety and security.
According to an AAI official, who also did not want to be identified, the new aviation university will largely utilise IGRUA’s infrastructure and aircraft for training purpose.
The demand for aviation professionals is expected to increase with the NCAP easing restrictions on newer domestic carriers to start overseas operations. The government relaxed the so-called 5/20 rule, which required an airline to have a five-year experience and 20 aircraft in its fleet in order to obtain a licence to operate international flights.
The university may also hire overseas professionals and academicians, especially from technologically advanced countries such as the US and Canada.
Another aviation ministry official, requesting anonymity, said that a vice-chancellor has already been selected and more hiring for full-time positions will start very soon.
“The plan is to ensure that the first academic session would start from June-July next year. We also want to hire a number of overseas professionals, but that decision has not been finalised yet because of the costs involved,” the official pointed out. “At the same time, the aviation sector is growing fast—India is among the five fastest-growing global aviation markets—and training in sync with international norms will be an added advantage for the students,” the official said.
The Union Cabinet, headed by the then-prime minister Manmohan Singh, gave its approval to the project in July 2013 and sanctioned Rs.202 crore for the first phase (2013-2019) of university development.
In 2006, M.K. Kaw Committee had recommended setting up of a national aviation university in India. The 12th Five-year Plan (2012-17) document also made a similar recommendation to augment qualified and trained manpower for the aviation sector.
Queries emailed to the ministry of civil aviation and AAI on 30 August remained unanswered.
Experts, however, are of the opinion that training by overseas professionals on the home turf could be wishful thinking on the part of the authorities.
According to former AAI chairman V.P. Agarwal, no foreigner would prefer taking up an assignment at the upcoming aviation university, which is a remote town and over 600km away from the national capital Delhi.
“Besides, bringing in someone from outside India will lead to a huge disparity in salary, which I don’t think would materialise,” said Agarwal.
According to the International Air Transport Association, India’s air passenger traffic growth rate is over six times more than that of the US, which at 4.1% is the second-fastest growing market in the world.
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saurabh vats
posted a thread.
DGCA AIRBUS A320 QUESTION BANK
DGCA AIRBUS A320 QUESTION BANK
EACH AND EVERY CHAPTER INCLUDED WITH CORRECT ANSWERS.
TOTAL - 145 PAGES AIRBUS A320 QUESTION BANK
DOWNLOAD
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Another way to think about it is to think of an airplane's control in flight as a lever centered around the center of lift. One side of the lever will be the weight of the plane, often increased due to the weight of the engine, and the other side is the control surface (usually the tail). For instance, putting downward pressure on the tail will pivot the nose up about the center of lift.Since you are exerting control with the long lever/arm of the fuselage, it doesn't take much force to effect a change. If you use centrally located engines to do the same work, it will require more power because you lose the help of the "lever"Moving control surfaces is easier to design and build than an engine mount that rotates.Plus the associated structure needed to accommodate the thrust, p-factor, and gyroscopic loads is going to be a lot heavier than ailerons, spoilers, moving tail plane, etc.Another issue is if one loses one or both engines, your roll and pitch control disappear as well. lol
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saurabh vats
replied on Parul Sethi's thread "Why is IDG coloured black?".
The human eye and brain together translate light into color. Light receptors within the eye transmit messages to the brain, which produces the familiar sensations of color. Newton observed that color is not inherent in objects. Rather, the surface of an object reflects some colors and absorbs all the others. We perceive only the reflected colors. Thus, red is not "in" an apple. The surface of the apple is reflecting the wavelengths we see as red and absorbing all the rest. An object appears white when it reflects all wavelengths and black when it absorbs them all. Got your answer, Its not black !!
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