Showing posts with label history. Show all posts
Showing posts with label history. Show all posts

Friday, November 11, 2011

The History of the Apache Helicopter

The History of the Apache Helicopter

Rc Helicopter

As the world's foremost attack helicopter, the AH-64 Apache had been designed to survive in combat situations. It was built with what turned out to be an award-winning design by Hughes Helicopters Inc. The Apache prototype was designated YAH-64 and first flew in 1975. Then Hughes in 1976 was granted a full-blown development contract.

The United States Army preferred the AH-64A Apache (new designation) to the Bell YAH-63. Hughes Helicopter was awarded the pre-production contract. This contract was for two of the Apaches. Then the Army gave the approval for full production in 1982. In 1984 the deliveries began out of the plant in Mesa, Arizona. By this time Hughes Helicopters was part of the McDonnell Douglas Helicopter Systems.

Advanced technologies like the TADS/PNVS were added to bolster the effectiveness of the Apache in supporting the ground operations. The same engines were used in this helicopter as in the Navy's Seahawk (SH-60) and the Army's Black Hawk (UH-60), the T700.

During the 1980s the design was improved by McDonnell Douglas and the AH-64 B had and improved cockpit and upgrades that included a new fire-control system. The funding in 1988 was approved for the multi-stage improvement of the weapon and sensor avionic systems and to add some of the digital systems. But then better technology became available and this program was scratched to make more dramatic alterations.

The Apache, because of it being heavily armed and highly manouverable, became the backbone for ground support, no matter what the weather conditions, for the U.S. Army. Then in 1992 the AH-64D Apache Longbow came on the scene, which was vastly improved upon from the AH-64A. The prototype for the AH-64D Apache Longbow was first flown on the 14th of May in 1992.

Testing was not completed until April 1995 after it had been proven that they AH-64D Apache Longbow had greatly surpassed the AH-64A Apache. In October that year full production was approved for the AH64-D Apache Longbow. Also a contract was approved to upgrade the AH-64 Apaches too. The first of the AH-64D Apache Longbows were delivered March 31, 1997.

It was in August of 1997 when McDonnell Douglas merged with The Boeing Company under the Boeing name. The total cost for the AH-64D Apache program was US billion up to and through 2007. Boeing delivered some 500 of the AH-64D Apaches to various clients across the world by August 2004. This aircraft features the latest in digital communications abilities to enable transferring battle information in real time along with having totally-integrated weapons and avionics. These improvements make this helicopter simpler to maintain, more readily deployed, and even more likely to survive. This helicopter is still in use today in a variety of countries including the United States.

Some specifications are listed below:

Model number: AH-64
First flight: Sept. 30, 1975
Height: 15 feet 3 inches
Length: 48 feet 2 inches
Rotor diameter: 48 feet
Ceiling: 21,000 feet
Power plant: Two of the T700 turboshaft engines from GE providing 1,900-shaft-horsepower
Range: 260 miles
Top speed: 192 mph

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Friday, July 1, 2011

The history of remote control helicopters

The first successful flight of a remote control helicopter found in the Federal Republic of Germany in 1968 and was built by Dr. Dieter Schluter. This model was the first fully functional remote controlled helicopter and was a pioneer in his field work and provides the grounding for the development over the years.

As part of the first full-scale helicopters Sikorsky lgor operational in 1941, the RC helicopter really succeeded, after much trial and error in the way we rotatewas demonstrated when, in 1978, ten years after the first remote control helicopter went to work to become a semi-scale model of the mainstream Autogiro Wallace, what kit to the fluctuations of the business model helicopter remote control sold around the world.

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There are some basic projects for remote control helicopters over the years with a pitch (ie the leaves, which turn on their longitudinal axis, to modify or reverse lift) to fly in general has been difficultbut nimble aerodynamically.

One of the biggest obstacles to development were offered an RC helicopter with enough power for the weight of the structure from the ground. In view of developments in the technologies we have today, and also to overcome the traditional sources of energy for remote control helicopters hour Nitro (nitromethane-methanol-burning engine), gas turbines, electric batteries, oil and gasoline.

Have developed as the helicopterOver the years, removing one of the characteristics of each model is becoming increasingly smaller. Today there are a variety of micro-RC helicopters, both internally and externally, small enough to fit in the palm of a hand, a big step forward from bulky structures, we started the game with be able to work .

RC Helicopters are now stocked by major high street and online stores, Gone are the days when she was only the hardcore hobbyistsare accessible to the general consumer than ever.

As the helicopter industry in the mainstream boy toy / gadget, it was obvious that they had to be stronger than novices took to the controls. The helicopters are cast in plastic mold to stand in a wall or ceiling flew at various speeds are made.

The most important development in recent years, the introduction of technology you have the RC helicopter gyro. ThisThe technology is to control the remote control helicopter much easier, so that the constant circular movement in flight, which is found in many of the cheaper models on the market. Turns and maneuvers are more accurate and easier to control in a rule that all like a pro in minutes to collect their new toys and easily at any time from the controls of a helicopter gyro is extremely stable, vertical position sought.

The future of remote control helicoptersThere is still more developments, like all manufacturers, flight times, stability, maneuverability, load times and who knows what else trying to improve their creativity to evoke.

The history of remote control helicopters

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