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Northeast airports lack night landing facilities: Minister

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New Delhi: Four major airports in the northeastern states of Assam, Mizoram and Meghalaya do not have night landing facilities, Minister of State for Civil Aviation Mahesh Sharma said on Monday. 

download“Presently, the airports at Shillong (Meghalaya), Lengpui (Mizoram), Jorhat and Tezpur (both in Assam) in the northeastern region are not equipped with night landing facilities,” Sharma stated in a written reply to a question in the Lok Sabha.

He said that while Shillong airport belonged to the Airports Authority of India (AAI), Lengpui airport belonged to the Mizoram government and the Tezpur and Jorhat airports were owned by the Indian Air Force (IAF).

“Upgrade of airports, including provision of night landing facilities is a continuous process, which is undertaken by the Airports Authority of India depending on the operational requirements at the concerned airport, demand from airlines, technical feasibility, availability of land free from all encumbrances etc.,” he said.

According to the minister, though the Kumbirgram airport at Silchar in southern Assam is equipped with night landing facilities, it belongs to the IAF and permission for night landing flights for civil operations at this airport rests with the IAF.

Sharma said that domestic air services have been deregulated by the government and airlines were free to operate anywhere in the country, subject to compliance of route dispersal guidelines (RDGs) issued by the government.

“The government has laid down RDGs with a view to achieve better regulation of air transport services taking into account the need for remote and regional areas of the country. However, it is up to the airlines to provide air services to specific places, depending upon the traffic demand and commercial viability,” he stated.

(IANS)

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NASA’s Noise-Reduction Tech to Make Quieter Airports a Reality

The Landing Gear Noise Reduction technology element addressed airframe noise caused by airflow moving past the landing gear on approach

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NASA image.
Just 11 years after Eisenhower authorized NASA, American astronaut Neil Armstrong walked on the moon. Pixabay

Aiming to reduce aircraft noise for communities that live near airports, NASA has successfully tested new noise reduction technologies on a series of Acoustic Research Measurement (ARM) flight, and managed to cut airframe noise during landing by more than 70 per cent.

The ARM flights, which concluded in May, at NASA’s Armstrong Flight Research Center in California, tested technology to address airframe noise, or noise that is produced by non-propulsive parts of the aircraft, during landing.

NASA successfully combined several technologies including Landing Gear Noise Reduction, landing gear cavity treatments, and the Adaptive Compliant Trailing Edge flexible wing flap, on various airframe components of a Gulfstream III research aircraft to achieve a greater than 70 per cent reduction in airframe noise.

“This airframe noise reduction produced by NASA technology is definitely momentous, and the best part is that it directly benefits the public,” ARM Project Manager Kevin Weinert, said in a statement.

“We are very confident that with the tested technologies we can substantially reduce total aircraft noise, and that could really make a lot of flights much quieter,” added Mehdi Khorrami, an aerospace scientist at NASA’s Langley Research Center in Virginia.

The Gulfstream III research aircraft flew at an altitude of 350 feet, over an 185-sensor microphone array deployed on the Rogers Dry Lake at Edwards Air Force Base in California.

NASA jet
Representational image. (IANS)

The Landing Gear Noise Reduction technology element addressed airframe noise caused by airflow moving past the landing gear on approach.

Another area of focus was landing gear cavities, also a known cause of airframe noise. These are the regions where the landing gear deploys from the main body of an aircraft, typically leaving a large cavity where airflow can get pulled in, creating noise.

NASA applied two concepts to these sections, including a series of chevrons placed near the front of the cavity with a sound-absorbing foam at the trailing wall, as well as a net that stretched across the opening of the main landing gear cavity.

This altered the airflow and reduced the noise resulting from the interactions between the air, the cavity walls, and its edges, the report said.

Also Read: NASA Seeks Partnership With US Industry to Develop First Gateway Element

To reduce wing flap noise, NASA used an experimental, flexible flap, which investigated the potential for flexible, seamless flaps to increase aerodynamic efficiency.

“While there are obvious potential economic gains for the industry, this benefits the people who live near major airports, and have to deal with the noise of aircraft coming in to land. This could greatly reduce the noise impact on these communities,” Weinert said. (IANS)