Model Rocket Ships
Model Rocket Ships
Where I can get a model rocket for the Sims 2?
For the sims 2 need a model rocket, and I wondered if I could not download, or what game comes with. Thanks (:
You can download from here if you are a subscribed member: http://www.thesimsresource.com/artists/Simaddict99/downloads/sims2/objects/furnishing/misc/children/page10in184items/
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sound barrier
History
Some common scourges, such as whip or sparewhip are able to move faster than sound: the tip of the whip breaks the sound barrier and causes a strong crackiterally a sonic boom. Firearms from the 19th century have generally had a supersonic exit velocity. However, the sound barrier may have been violated first 150 million years before the invention of these devices. Some paleobiologists report, based on computer models of biomechanical capabilities, some long-tailed dinosaurs like Apatosaurus and Diplodocus may have possessed the ability to film in the tail supersonic speeds, possibly used to generate a booming sound intimidating. This finding is theoretical and discussed by others in the field.
The first problems
The tip of the propeller planes at the beginning many can reach supersonic speeds, producing a noticeable buzz that differentiates such aircraft. This is particularly notable in the Stearman, and notable in the T-6 Texan when entering a sharp curve without precedent. This is undesirable because the transonic air movement creates disruptive shock waves and turbulence. This is due to these effects that the propellers are known to suffer performance was drastically reduced as they approach the speed of sound. It is easy to show that energy needed to improve performance is so great that the weight of the engine requires is growing faster than the output of the propeller. This problem was one of the issues that led to early research in jet engines, especially in England by Frank Whittle and Hans von Ohain in Germany, his research was specifically in order to avoid these problems in high speed flight.
propeller planes were, however, able to approach the speed of sound in one hop. This led to numerous accidents for a variety of reasons. These include the growing forces in the various control surfaces, leading to the aircraft becoming more difficult to control to the point where many suffered from powered flight on the ground when the pilot could not overcome the force of the control lever. The Mitsubishi Zero was infamous for this [Citation needed] problem, and several attempts to fix it only made the problem worse. In the case of the Supermarine Spitfire, the wings suffered from low torsional stiffness, and when the wing flaps were transferred tended to flex in such a way that counteracts the control input, leading to a condition known as a reversal of control. This was fixed in later models with changes in the wing. The P-38 Lightning suffered a particularly dangerous interaction of air flow between the wings and tail surfaces in the dip which makes it difficult to "get" a problem that was solved later with the addition of a "dive flap" that alter the flow air in these circumstances. due to the formation of shock waves on curved surfaces uproar was another major problem, which led to the most famous rupture de Havilland Swallow and the death of its pilot, Geoffrey de Havilland, Jr.
All of these effects, though not related in most ways, led to the concept of a "barrier" which makes it difficult for an aircraft breaking the speed of sound.
The first claims
There are, however, several claims that broke sound barrier during the Second World War. Hans Guido Mutko claimed to have broken the sound barrier on April 9, 1945 in a Messerschmitt Me 262. Mtke not reported only transonic buffeting, but the resumption of normal control after certain speed is exceeded, then the resumption of serious turmoil after the Me 262 slowed again. He also reported engine out of the flame. However, this assertion is widely disputed by many experts believe the structure of 262 I could not support high transonic and supersonic flight much less. The lack of area ruled fuselage and wings of 10 percent in thickness did not stop other than aircraft Mach 1 in dives. Chuck Yeager Bell X-1, F-86 Sabre (I-262 with profile) and Convair Sea Dart Seaplane exceeded Mach 1 without fuselage area rule. Computational tests carried out by Professor Otto Wagner at the Technical University of Munich in 1999 suggest that the Me 262 was capable of supersonic flight in steep dives. Recovery immersion and the resumption of serious turbulence subsonic flight was then time would have been very likely to damage the ship terminal.
On page 13 "Me 262 A-1 Pilot's Handbook", issued by Headquarters Air Materiel Command, Wright Field, Dayton, Ohio, as the Report No. F-SU-1111-ND January 10 1946:
"The speed of 950 km / h (590 mph) are reported to have been achieved in a crushed 20-30 at the horizontal. There were vertical jumps. At speeds 950 to 1,000 km / h (590 to 620 miles per hour) air flow around the aircraft reaches the speed of sound, and is reported to the control surfaces do not affect the direction flight. The results vary with different aircraft, some hang on diving and diving, while others gradually. It is also reported that once the speed the sound is superior, this condition disappears and re-establishing normal control. "
The comments about the restoration of flight control and the cessation of turbulence above Mach 1 are very significant in a document of 1946.
In his book Me-163, the former driver of I-163 Mano Ziegler says his friend, test pilot Heini Dittmar, broke the sound barrier when steep dive the plane and several rockets on the ground heard the sonic booms. Heini Dittmar had been officially recorded accurately and at 1004.5 km / h (623.8 mph) in level flight on October 2, 1941 in the I-163A prototype V4. He arrived at this speed without full throttle as he was concerned about the transonic shocks. The ship Walter RII-203 rocket engine cold, produced 7.34 kN (750 kgp / 1.650 lbf) thrust. The flight was made after a fall launch a company plane to save fuel, a record that was kept secret until the end of the war. yield potential of the power jump ship is unknown, but the version I 163B rocket plane test series had a more powerful engine (HWK 109-509 A-2) and greater wing sweep of the Me 163 A. Ziegler said that 6 July 1944 Heini Dittmar test fly a kite Me-163BV18 VA + SP was measured at a speed of 1,130 km / h.
similar claims for the Spitfire and other aircraft propeller are more suspect. Now it is known that traditional indicators of speed use of a Pitot tube to erroneously high readings in the transonic, apparently due to waves shock interacting with the tube or the static source. This led to problems then known as "Mach jump".
Attempts to break the barrier sound
The first self-propelled vehicle to break the sound barrier was probably the first successful test launch of the German V-2 ballistic missile October 3, 1942, in Peenemnde in Germany. In September 1944, the V-2s routinely achieved Mach 4 (4,900 km / h) during terminal descent.
In 1942 the Kingdom Ministry Kingdom of Aviation began a top secret project with Miles Aircraft to develop the first airplane in the world capable of breaking the sound barrier. The project resulted in the prototype development Miles M.52 aircraft, which was designed to reach 1,000 km / h (417 m / s; 1600 kmh) at 36,000 feet (11 km) in 1 minute 30 seconds.
The plane design introduced many innovations that are still used in today's supersonic aircraft. The most important development was the elevator all mobile allowing additional control to counteract the Mach tummy allowing control to be maintained and beyond supersonic speeds. This was the wind tunnel tested to Mach 0.86 in 1944 in the UK. In the immediate postwar era with new data on captured German records suggested that savings significant resistance could be taken through a variety of means such as swept wings, and Director of Scientific Research, Sir Ben Lockspeiser decided cancel the project in light of this new information. Later, the experimentation with the Miles M.52 design proved that the aircraft in fact have broken the barrier of sound, with an unmanned scale replica of the M.52 3.10 Mach 1.5 in October 1948. At that time, the sound barrier was broken by the Americans, and by the British De Havilland DH 108.
officially broken the sound barrier
U.S. good progress efforts shortly after Britain had revealed all their research and designs for the U.S. government, with the U.S. pledge that information would be shared in reverse. They took the information technology provided by the British and began work on the Bell XS-1. The final version of the Bell XS-1 has many similarities in design to the original version Miles M.52. It also features all phones tail, XS-1 was later known as the X-1. It was in the X-1 that Chuck Yeager was credited with being the first man to break the sound barrier in level flight on 14 October 1947, flying at an altitude of 45,000 feet (13.7 km). George Welch made a plausible claim, but officially unverified be broken sound barrier on October 1, 1947, aboard an XP-86 Sabre. Also claimed to have repeated his supersonic flight on October 14, 1947, 30 minutes before Yeager broke the sound barrier in the Bell X-1. Although the evidence of witnesses and instruments imply that Welch achieved supersonic speed, the flights were not properly controlled and are not officially recognized. The XP-86 reached a supersonic speed officially on April 26, 1948.
On October 14, 1947, less than a month after State U.S. Air Force was established as a separate service, the tests culminated in the first manned supersonic flight, piloted by Air Force Captain Charles "Chuck" Yeager in aircraft # 46-062, which he had named Glamorous Glennis. The rocket-powered aircraft was launched from the bomb bay of specially modified B-29 and glided to a landing on a runway. XS-1 flight number 50 is the first in the X-1 supersonic flight recorded at Mach 1.06 (361 m / s, 1,299 km / h, 807.2 mph) top speed, however, Yeager and many other staff members believe Flight # 49 (also with Yeager piloting), which reached a speed recorded maximum Mach 0.997 (339 m / s, 1,221 km / h), may, in fact, exceeded Mach 1. [Citation] is necessary (The measurements are accurate to three figures significant and no sonic boom was registered for that flight.)
As a result of the first X-1 supersonic flight, the National Aeronautics Association voted the 1948 Collier Trophy to be shared by the three main participants in the program. Honored at the White House by President Harry S. Truman were Larry Bell of Bell Aircraft, Captain Yeager for piloting the flights, and John Stack of NACA contributions.
Jackie Cochran was the first woman to break the sound barrier on May 18, 1953, a Canadair Sabre with Yeager as her wingman.
The sound barrier vanishes
Chuck Yeager broke the sound barrier on October 14, 1947 in the Bell X-1, as shown in this news.
As the science of high-speed flight became more widely understood, a number of changes led to the eventual disappearance of the "barrier sound. "These were the introduction of swept wings, the area rule, and the engines of increasing performance. In 1950 the aircraft could combat many routine breaking the sound barrier in level flight, but often suffered from control problems in doing so, such as cosmetic surgery Mach. Modern transport aircraft can the "barrier", without even notice.
In late 1950 the theme was so well understood that many companies started to invest in the development of supersonic aircraft, or TSM, believing that to be the next "natural" step in the evolution of aircraft. History has shown that this is not the case, at least yet, but Concorde and the Tupolev Tu-144, both of services held in the 1970 regardless.
Although the Concorde and the Tu-144 was the first passenger plane commercial supersonic speeds, commercial aircraft were not first or only to break the sound barrier. On August 21, 1961, a Douglas DC-8 broke the barrier of sound at Mach 1.012 or 1.240 km / h (776.2 mph) while in a controlled dive through 41,088 feet (12,510 m). The purpose of the flight was to collect data on a new design for the wing leading edge. A China Airlines 747 almost certainly broke the sound barrier in an unexpected drop of 41,000 feet (12,500 m) to 9,500 feet (2,900 m) after an in-flight upset the February 19, 1985. It has also reached more than 5 grams.
Breaking the sound barrier over land
On 15 October 1997, in to Vehicle Design and built by a team led by Richard Noble, British pilot (pilot and the Royal Air Force) Andy Green became the first person to break the barrier of sound in a land vehicle. The vehicle, called the ThrustSSC (Super Sonic Car), captured the record exactly 50 years and one day after Yeager's flight.
References
Notes
^ APOD: August 19, 2007 – A Sonic Boom
^ Http://www.eng.vt.edu/fluids/msc/gallery/conden/mpegf14.htm
^ See the speed of sound science behind the speed referred to as the sound barrier, sonic boom and to obtain information on sound associated with supersonic flight.
^ Wilford, John Noble (12/02/1997). "Dinosaurs Is the sound barrier?". The New York Times. Retrieved the original on 15/01/2009. http://www.webcitation.org/5dq7UdVkC. Retrieved on 15/01/2009.
Portway ^ 1940, p. 18. Quote: "For various reasons it is quite certain that the maximum speed possible under conditions of self-propulsion is the sound in the air ", ie 750 mph (1,210 km / h).
^ Me 262 and the barrier Sound
^ Willy Rading and Schick, 1996, p. 15.
^ Willy and Schick, 1996, p. 32.
^ Ksmann, Fernando CW 1999, pp 17, 122. Die Welt der schnellsten Jets (In German). Berlin: Aviatic-Verlag GmbH, 1999. ISBN 3-925505-26-1.
^ The Amazing George Welch, first through Sonic Wall
^ Comments by Eric "Winkle" Brown
^ Brown 1980, p. 40.
^ Brown 1980, p. 3840.
^ Wagner, 1963, p. 17.
^ Douglas Passenger Jet Breaks Sound Barrier
China Airlines Flight 006 ^
Bibliography
"Breaking the sound barrier." Modern Marvels (TV show). July 16, 2003.
Brown, Eric. "Miles M.52: The supersonic dream. "Thirteen Air enthusiast, from August to November 1980. ISSN 01443-5450.
Hallion, Dr. Richard P. "Saga of the spacecraft." AirEnthusiast Five, November 1977-February 1978. Bromley, Kent, UK: Pilot Press Ltd., 1977.
Miller, Jay. The X-Planes: X-1 to X-45, Hinckley, UK: Midland, 2001. ISBN 1-85780-109-1.
Pisano, Dominick A., R. van der Linden, Robert H. Frank winter. Chuck Yeager and the Bell X-1: Breaking the sound barrier. Washington, DC: Smithsonian National Air and Space Museum (in association with Abrams, New York), 2006. ISBN 0-8109-5535-0.
Portway, Donald. Military Science Today. London: Oxford University Press, 1940.
Wagner, Ray. The North American Sabre. London: Macdonald, 1963.
Winchester, Jim. "Bell X-1." Concept Aircraft: Prototypes, X-Planes and Aircraft experimental (the Aviation Data File). Kent, UK: Grange Books plc, 2005. ISBN 1-84013-309-2.
Wolfe. Tom. The Right Stuff. New York: Farrar, Straus and Giroux, 1979. ISBN 0-374-25033-2.
Yeager, Chuck, Bob Cardenas, Bob Hoover, Jack Russell and James Young. The search for Mach One: A first-person account of Breaking the sound barrier. New York: Penguin Studio, 1997. ISBN 0-670-87460-4.
Yeager, Chuck and Leo Janos. Yeager: An Autobiography. New York: Bantam, 1986. ISBN 0-553-25674-2.
External Links
Wikimedia Commons has media related to the sound barrier
Fluid Mechanics, a collection of tutorials by Dr. Mark S. Cramer, Ph.D
Breaking the sound barrier with a plane of Carl Rod Nave, Ph.D
a video of a Concorde to reach Mach 1 at the intersection TESGO taken from below
An interactive Java applet, illustrating the sound barrier.
EV
Extremes of motion
Speed
Air (transcontinental) Land (criticized car road motorcycle) Water (underwater transatlantic) Space
Distance
Flight (altitude endurance)
Ocean depth Space
See also
Sound barrier FAI limits the list of space vehicle speed records List of spaceflight records Speed of light records
Categories: Aviation terminology | AirspeedHidden categories: All articles with no source statements | Articles with unsourced statements June 2009 | Articles with statements without power October 2008 About the Author
I am an expert from China Hardware Suppliers, usually analyzes all kind of industries situation, such as dynamo led lantern , led dynamo lantern.
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