Thursday, April 21, 2011

Alligator, son of Black Shark


Alligator, son of Black Shark
KA-52 Alligator, son of Black Shark, is an all-weather machine, a deal-maker in the mountains. Source: Reuters/Vostock

A total of three Russian helicopters at once are taking part in India’s tenders to supply assault combat helicopters: the firepower support machines Mi-28N (the Night Hunter) from Mil and Ka-52 (the Alligator) from Kamov, as well as the lightweight multi-purpose Ka-226T, also from Kamov. Whereas the first two are competing to be included on New Delhi’s shortlist for procurement of 22 assault helicopters, the 226’s bid is part of India’s Defence Ministry’s tender for 197 reconnaissance and observation helicopters.

“All countries in the world today want to purchase advanced, reliable, and very expensive military equipment,” said Rosoboronexport Deputy General Director Alexander Mikheev. “That’s why they announce tenders where potential customers can pick the best machines on the most favourable terms. We do, indeed, offer our partners the best value for money combat machines.”

Each of the Russian choppers that is bidding for the Indian contracts is unique in its own way. But they include a helicopter that is truly one-of-a-kind and ahead of its time and that, despite all the difficulties it went through during development and commissioning, as is often the case with breakthrough weaponry, has finally been adopted by the Russian Army. Now it has a tremendous chance to become a star on international arms markets. It is the Ka-52 Alligator, son of the Ka-50 Black Shark. Not sure how a shark could have given birth to a crocodile? Here is the story…

The Black Shark’s history began back in the 1970s. As early as December 1976, the USSR Council of Ministers instructed engineers to develop a brand new combat helicopter to replace the Mi-24, which by the mid-1970s had garnered a number of rather negative reviews following combat missions in various hot spots. To minimise the risk of failure, the project was assigned to two design bureau, Mikhail Mil’s and Nikolai Kamov’s. By 1986, the first Mi-28 and Ka-50, designed by the late Mark Vainberg and Sergei Mikheev, disciples of and successors to the two prominent engineers, had been developed. Many test flights and numerous commissioning boards later, the Ka-50 Black Shark was selected and commissioned by the Army in 1995 (by Decree of the President of the Russian Federation No. 883 of 25 August 1995.) The Shark project cost the federal budget more than a billion dollars. Yet the Ministry of Defence did not get a chance to take delivery of these helicopters: Throughout the 1990s, the federal budget had next to nothing to pay for defence equipment.

This was not, however, the only obstacle to adoption of the unique machine by combat troops. Some Air Force representatives flatly rejected the very idea of the Ka-50, designed to be flown by a single person, combining the functions of pilot, navigator, and operator of all of its combat systems, including guided anti-tank missiles, non-guided missiles, and an automatic rapid-fire cannon. Despite what the Kamov pilots demonstrated, it was insisted that no military pilot could be expected to be a Jack-of-all-trades, while keeping an eye on the enemy and watching the horizon to avoid crashing into a tree or a mountain when flying at low altitude.

They remained unmoved by the counterarguments that, if fighter jet pilots managed to do it all even at supersonic speeds, helicopter pilots would be able to do it too, because their speeds are much lower, especially since the Ka-50 was equipped with an automatic horizon tracking and obstacle avoidance system. In any case, there was no money to launch serial production of the Black Shark (a nickname the helicopter received after starring in a feature movie.) The crisis of the late 1990s – early 2000s made the machine unaffordable.

Nevertheless, the Ka-50 became a star of international air shows, where Kamov test pilots performed aerobatic wonders and some military officials showed off the new machine as proof of their frenetic activity to strengthen the country’s defences. In 1998, Kamov took part in an international tender to supply helicopters to Turkey’s Air Force (but its NATO allies, the Americans, pressured the Turks into choosing the Apache over the Black Shark.) Then, fed up with the talk about a single pilot not being able to fly the combat chopper, the Kamov engineers rolled up their sleeves and started work on a two-seater version of the Ka-50 – the Ka-52 (Alligator.) Working from the Black Shark’s strengths, they created its “son”. And Defence Ministry brass revived their chorus about “unique machines that are ahead of their time,” but still without putting any money where their mouths were.

Simultaneously, Mil design bureau engineers started refining their Mi-28N by making it an all weather and 24/7 machine, like the Ka-50 and the Ka-52. The Mi-28N became a competitor of the Black Shark and the Alligator. 
In December 2003, the then Commander of the Russian Air Force, General Vladimir Mikhailov, decided that “the Mi-28N would become the mainstay combat helicopter of the nation’s Air Force”. He explained that “whereas all helicopter units would receive the Mi-28N, the Kamov machines would be only sent to units that carry out special missions”.

The late Mark Vainberg, designer of the Mi-28N, once replied to this author’s question about which helicopter, the Mi-28 or the Ka-50, was better: “Which eye is more important to you, left or right?”, he replied, going on to explain: “Comparing the serial-production Ka-50 and Mi-28 doesn’t make any sense. They are designed for different combat missions. Back in the day, the Mi-28 lost out to the Ka-50 because of a number of unresolved technical issues. While the Ka-50 and Ka-52 are, indeed, suited for all kinds of special operation and air mission control, the Mi-28 is second to none for general combat missions and fire support.”

“Over recent years, engineers have upgraded our new Mi-28N machine to world-class level. What’s more, the Mi-28N has no peers. This chopper can engage the enemy at an altitude of five metres or more, while remaining invulnerable (the hull can endure a direct hit from an American M61 Vulcan 20 mm cannon and the windshield withstands 12.7 mm bullets.) The helicopter is fitted with standardised Russian-made equipment and is relatively inexpensive to manufacture. The Defence Ministry plans to procure around a hundred of these machines for the Army in 2011.

Yet the Ka-52 Alligators, which boast a number of very big advantages over other choppers, will also join the ranks.

“This helicopter is ideal for working mountainous and urban areas and wherever there is little room for manoeuvre,” said 1st Class Test Pilot, Colonel Alexander Papai. “Unlike the Mi-24 or Mi-28, the Black Shark has no tail rotor, its main rotor is shorter, and it’s more manoeuverable and more powerful. It can make a U-turn without slowing down and can fly sideways. It’s equipped, among other things, with automatic detectors of target radar emissions from the ground, eight-kilometre range supersonic missiles (three times the Mi-28 missile range), and very high-precision onboard cannons. And, of course, the Ka-52 is an all-weather machine, a deal-maker in the mountains.”

At the May Victory Parade in Moscow, the Mi-28N Night Hunter and the Ka-52 Alligator, as well as the Ka-50 Black Shark, flew over central Moscow, over Red Square together, in a single combat formation. This suggests that the Russian Army’s front-line Air Force units will need all kinds of helicopter. And it is up to the Indian Army to decide what it needs. At least, as helicopter pilots say, there are machines that are ahead of their time and that pose a challenge to pilots not unlike the way beautiful women pose a challenge to men – will they be up to it or not.

Thursday, January 20, 2011

IndiGo commits to 180 A320s, largest jet order in aviation history



Becomes a launch customer for the A320neo
India's largest low-cost carrier, IndiGo has signed a Memorandum of Understanding for 180 eco-efficient Airbus A320 aircraft of which 150 will be A320neo’s and 30 will be A320s. It is the largest single firm order number for large jets in commercial aviation history, and also makes IndiGo a launch customer for the A320neo. Engine selection will be announced by the airline at a later date.
The A320neo, available from 2016, incorporates new more efficient engines and large wing tip devices called Sharklets delivering significant fuel savings of up to 15 percent, which represents up to 3,600 tonnes of CO2 annually per aircraft. In addition, the A320neo provides a double-digit reduction in NOx emissions and reduced engine noise.
“This order for industry leading fuel efficient aircraft will allow IndiGo to continue to offer low fares,” said Rakesh Gangwal and Rahul Bhatia, co-founders of IndiGo. “Ordering more A320s was the natural choice to meet India’s growing flying needs. The opportunity to reduce costs and to further improve our environmental performance through the A320neo were key to our decision.”
“The A320 Family is the recognised market leader. The A320neo, offering maximum benefit for minimum change, will ensure that this continues to be the case for many years to come,” said John Leahy, Chief Operating Officer Customers.  “This order positions IndiGo to take full advantage of the predicted growth in Indian air travel and we are delighted that they continue to build their future with Airbus.”
The A320 Family (A318, A319, A320 and A321) is recognised as the benchmark single-aisle aircraft family. Some 6,800 Airbus A320 Family aircraft have been ordered and some 4,500 delivered to more than 310 customers and operators worldwide, making it the world’s best-selling single-aisle aircraft family.  With 99.7% reliability and extended servicing periods, the A320 Family has the lowest operating costs of any single aisle aircraft. The A320neo will have over 95% airframe commonality with the A320 Family whilst offering up to 500nm (950 km) more range or two tonnes more payload.







IndiGo’s potential A320neo order heats up engine competition
Engine selection by Indian carrier IndiGo for its potential A320neo order is under heavy scrutiny as it could usher in one of the first competitive campaigns for the CFM Leap X and Pratt & Whitney's PW1100G geared turbofan.
Airbus has unveiled a memorandum of understanding with IndiGo covering 150 of the new A320neo variant and 30 basic A320 models.
Key to the A320neo's estimated 15% in fuel savings is the two engine types Airbus has selected for the aircraft. The CFM Leap X features a two-stage high-pressure turbine driving a 10-stage high pressure compressor, and low-pressure turbine blades produced using ceramic matrix composite. Its bypass ratio should be around 10 compared with 5-6 for the current CFM56 family.
 



P&W's geared architecture on the 1100G allows the front fan to spin three times slower than the core, which the manufacturer says optimizes the speed of each section of the engine. P&W believes the PW1100G should produce a 15% to 20% improvement in fuel burn.
Flighglobal's ACAS database shows that IndiGo currently operates 33 Airbus A320s powered by IAE V2500s, which are also scheduled to power the 62 firm A320s the airline has order.
With no direct allegiance to either CFM or P&W, Indigo's engine selection for the A320neo is difficult to predict. P&W is a joint venture partner in the V2500's manufacturer IAE along with Rolls-Royce, MTU and Japanese Aero Engine Corporation.
IndiGo was mentioned on a list of potential A320neo customers by Airbus chief operating officer for customers John Leahy in December 2010. In May of 2010 ATI reported that IndiGo was seeking government approval to acquire 150 aircraft for its expansion plan.
Other potential customers interested in the A320neo mentioned by Leahy are Lufthansa, AirAsia, Qatar Airways and lessors International Lease Finance Corporation and GECAS.
Airbus has previously said the A320neo's list price would be around $6 million higher than existing models to support modifications to the airframe and for the addition of 'sharklet' wingtips. The 2010 list price for an A320 was $81.4 million.