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Friday, November 4, 2011

Cheap' microjets take to the skies


When it comes to high-performance aircraft, of course, inexpensive is a relative term. The Eclipse 500 very light jet, sometimes called a microjet, costs about $1.5 million but boasts the same performance as rivals that can cost two or three times as much to purchase and operate.

Translated, this means a remarkable backlog of orders. At a recent aviation expo at the airport here, a representative said the Albuquerque, N.M.-based company already has orders for 2,400 of the Eclipse 500 jets that won't be filled until August 2008 for deposits placed today.
"We've really identified five primary market segments," said Matt Brown, an Eclipse sales manager. Those include corporations that may not want or be able to afford a more expensive jet, pilot training and air taxi services.
The last category is the most interesting--and the most controversial. The Federal Aviation Administration has predicted that the use of private business jets will triple because of microjets' lower costs. In theory, at least, that could mean more crowded skies and increased delays at larger airports where microjets would share space with commercial carriers.
Even without microjets, delays are on the rise. "In the first quarter of 2005, arrival delays were up 17 percent over the first quarter of 2004, and affected more than 25 percent of all flights," Kenneth Mead, the Transportation Department's inspector general, told a U.S. Senate panel.

Video: Hey, wanna buy a little jet? 
Eclipse Aviation is selling ultralight jets for around $1.5 million. Here, sales manager Matt Brown shows off one of the planes.

Mead warned that microjets such as the Eclipse 500 have the "potential to further crowd dense airspace" and predicted that 4,500 of them will be in use by 2016.
One large user could be DayJet, which said last year that it had already ordered 239 Eclipse 500s with an option to buy 70 more. "This is a transportation system that adapts to your needs," Ed Iacobucci, founder of software maker Citrix Systems and the man behind DayJet, said at the time. "It is not about serving New York to Atlanta. It is more about serving the secondary and tertiary markets with a point-to-point network."

Microjet proponents dismiss concerns about congestion as unfounded, arguing that advances in technology will permit planes to depart airports in quicker succession and saying that small jets can land at general aviation airports that larger planes simply can't.
The Eclipse 500, for instance, is believed to be the first jet to fly into San Carlos Airport located just south of San Francisco, during a test flight in December. San Carlos' runway is 2,600 feet long and the Eclipse requires just 2,155 feet for takeoff and landing in normal sea level conditions--a fraction of what a 757 requires. (The Eclipse 500 is awaiting certification from the Federal Aviation Administration, which the company expects by the end of the second quarter of this year. Eclipse CEO Vern Raburn is a Microsoft alum and Bill Gates is a large investor.)

Eclipse is not alone in trying to find ways to tap the $1.5 million to $3 million market for very light jets, which generally means six to eight seat planes that can fly for about 1,400 miles without refueling, at speeds of 400 to 500 mph.

A production version of Adam Aircraft's A700 microjet made its first flight in February and is expected to cost $2.25 million. Embraer's forthcoming Phenom 100 jet will cost $2.85 million and have a range of 1,160 nautical miles.
Cessna, meanwhile, is testing a six-seat microjet called the Citation Mustang. Delivery is expected by the end of 2006 with a cost of about $2.4 million, and specifications include a cruise speed of 391 mph and a takeoff distance of 3,120 feet.

Tuesday, November 1, 2011

10 Fastest Jet Aircraft In The World


Jet Aircraft are powered by jet engines and move much faster as compared to the propeller-powered aircraft. You can see a jet aircraft at a certain place before your sound can even reach there! Yes undoubtedly some of the jet aircraft even move faster than the speed of sound. The concept of jet aircraft was first given by two engineers, Frank Whittle of UK and Hans von Ohain of Germany.
Top 10 fastest jets are as follows:

10: General Dynamics F-111 “Aardvark”



It was developed in 1960’s by US and it is in active use of the Royal Australian Air Force. Its max speed is 2.5 Mach/ 2.5 times faster than the speed of sound. Aardvark is powered by twin Pratt & Whitney TF30-P-100 afterburners turbo fans.
9: MIG 31 Foxhound

It is produced by Russia and is an advanced version of MiG-25 FoxBat. The max speed of Foxhound is 2.83 Mach or 1860 mph and it is driven by two SoloveivD-30F6 afterburners turbo fans. Foxhound has the capability to produce 34,172 lbf of dry thrust.

8: F-15 Eagle



A product of USA, F-15 Eagle is powered by double Pratt & amp; Whitney F100 axial-flow turbofan with an ability to produce 29,000 lbf of thrust. It has a max speed of 2.5 Mach.

7: XB-70 Valkyrie

It has a max speed of 3.1 Mach and is produced by USA. It is powered by 6 General Electric YJ93-GE-3 afterburning turbojet machines.

6: Bell X-2 Starbuster

This jet comes with a sad but successful history with it. It is produces by USA and was a research project with ability to cross Mach 3. Lt.Col. Frank K. “Pete” Everest in November 1955 was the first one to test this jet and he flew this thing above Mach 3 but unfortunately, this took his life as well. It was indeed a despondent incident. Starbuster is powered by two-chamber XLR25 sea level thrust throttle-able engine.

5: Mig-25 “Foxbat”

It is produced by Russia and is really pragmatic in functioning at high altitude above 80,000 feet. Its max speed is 3.2 Mach and is powered by twin Tumansky R-15B-300 afterburning turbojets.
4: SR-71 BlackBird

It was developed by Lockheed Corporation, USA in the 1960’s and is the upgrade version of U-2 reconnaissance aircraft. It is powered by 2 Pratt $ amp; Whitney J58-1 continuous –bleed afterburning turbojets with a capability to supply 32,500 lbf thrust each. It can fly as high an altitude as 100,000 feet with 3 times the speed of sound (3.5 Mach). It was in use by USAF for 40 years and was retired in 1998.

3: X-15

With the max speed of 6.72 Mach, X-15 is the 3rd fastest jet aircraft. Its engine is Thiokol XLR99-RM-2 liquid fuel rocket engine that uses liquid oxygen us fuel. It can fly as high as 354,330 feet.

2: X-43A

This jet is fueled by Hydrogen and can move at a speed of 9.8 Mach. The credit goes to the supersonic-combustion-ramjet. It is produced by USA.

1: Space Shuttle


The fastest plane in the world is powered by 3 assemblies that contain reusable Orbiter Vehicle or OV, the external tank or ET which is fueled by LOX/LX2, and 2 reusable solid rocket boosters or SRB which are powered by MMH/N204. Its max speed is more than 20 Mach.