Newest Aircraft on Air Essay Example for Free

Newest Aircraft on Air Essay The F-35 varieties are designed to replace the older versions of aircrafts because these aircrafts that are used by the Armed Forces are susceptible to errors and risks, which are the common grounds for aircraft accidents. This research paper discusses the new technology behind the making of F-35 Lightning which has three (3) variants: (1) F-35A CTOL, (2) F-35B STOVL, and (3) F-35C CV. F-35 Lightning Design and Combat The F-35 Lightning is designed to take over the U.S. Air Force’s A-10 and F-16, the U. S. Navy’s F/A – 18, U.S. Marine Corps’ AV-8B Harriers and F/A -18, and U.K. Harrier GR.7 and Sea Harriers. The F-35 is also made for unusual air-to-air combat performance, and uses advance stealth to avoid being detected as it employs a powerful sensor in locating, targeting, and destroying multiple enemy fighter aircrafts. With the supersonic speed, F-35 has the most powerful engine among fighter planes and is capable of carrying weapons internally and avoiding aerodynamic drag of external stores to increase its agility reaching 9 g’s. In stealth mode, it can carry internal weapons load which includes two (2) 2,000 pound joint direct attack munitions (JDAMS) and two (2) advanced medium range air-to-air missiles (AMRAAM). The F-35 can be utilized in either close-in or long-range air-to-air combat. Variants F-35A Lightning Overview The F-35A (see Figure 1[i]) fits for the U.S. Air Force for the conventional takeoff and landing (CTOL) which uses a conventional runway for takeoff and landing. The internal capacity of fuel is around nine (9) tons which sustains an unrefueled range of at least 1,200 miles without external tanks. It also carries a 25 mm GAU-22/A cannon internally. The standard weapons load is two (2) AIM-120C air-to-air missiles and two (2) 2,000-pound GBU-31 JDAM guided weapons. In order to attain all air-to-ground and air-to-air ordnance, the internal weapons bay can be reconfigured. When the stealth is no longer needed in a mission, the F-35A pylons are brought with ordnance that gives the aircraft a weapons payload of at least 18,000 pounds. (Lockheed Martin) Features and Comparisons with Older Models The F-35A is able to exceed the performance of the F-16 due to several reasons: (1) stealth, (2) expanded range on internal fuel capacity, and (3) superior avionics. Also other features and abilities like the survival, effectiveness and support are dramatically improved in this aircraft. In comparison with the F-16, F-35A also includes an interior gun and a refueling container. The maneuver characteristics are the same with the F-16 with comparable instant and sustained â€Å"High-G† performance. On the other hand, unlike the F-16, the aircraft is stealthy and has the capability of first-look, first shot. The information gathered from sensors is put together or sorted out before being placed to the helmet-mounted or head-down displays. The aircraft also has advanced electronically scanned array radar. To add more, it also contains internal laser designator and infrared sensors. The range and payload for F-35A as mentioned above is highly greater than the older aircraft models. Design and Flight Tests The release of F-35A can surely improve the ability of the pilot in assisting in combat campaigns at longer ranges because of the large fuel capacity and the engine design which is single. As mentioned above the F-35A can carry more than 18,000 pounds of internal fuel and also can carry external fuel as well. This addresses the concern of increased combat scope and longer period spent on the base which is the experience on other aircrafts. For the flight tests, the Joint Strike Fighter X-35 demonstrator aircraft set a number of flight standards. The X-35A conventional take off and landing had a recorded 27 flights (highest), 27.4 flight hours (highest), 6 pilot checkouts (most), two cancelled flights (fewest) and a 6 1/3 flights per week(highest) in the first month of aircraft testing. The recording was established from October 2000 until August 2001. The first F-35 demonstrator aircraft left the Air Force’s runway in Plant 42, Palmdale, California on October 24, 2000 and reached Edward Air Force Base, California to begin the flight test program. On November 7, 2000, the F-35A was fueled from a KC-135 tanker for the first time and was able to record its longest flight of 2 hours and 50 minutes. It completed its test flight on November 22 2000 after finishing 27 flights in 30 days and achieving the first JSF supersonic flight the day before. It was brought back to Palmdale to be converted to STOVL F-35B. (Global Security) The U.S. Air Force is set to receive its first F-35 aircraft by 2008; however the initial operational capability (OIC) for the service will be available in 2011. F-35B Lightning Overview The F-35B (see Figure 2[ii]) is designed for the U.S. Marine Corps and the U.K. Royal Air Force and Royal Navy and is regarded as the world’s first short takeoff/vertical landing (STOVL) aircraft which has the ability to operate regularly at supersonic needs. This feature makes F-35B to operate from small ships, roads, and austere bases. It deploys near front-line combat zones which shrinks the distance greatly from the base to the target which also increases sortie rates while removing the need for logistics support. The internal fuel capacity of F-35B is seven (7) tons that provides unrefueled range of 900 miles without the use of external tanks. Its standard weapons load is two (2) AIM-120C air-to-air missiles and two (2) 1,000-pound GBU-32 JDAM guided weapons. It can also load six GBU-38 small-diameter bombs, and also huge choices of air-to-ground missiles, dispensers, and guided weapons. Same as F-35A, the internal weapons bay is reconfigurable for air-to-ground or air-to-air ordnance or a blend of both. If stealth is not required, F-35B external pylons are loaded with ordnance which gives the aircraft a weapons payload of more than 15,000 pounds. It is also recognized as the first STOVL stealth fighter. (Lockheed Martin) Comparison with other models The F-35B is said to replace the old AV-8B Harrier STOVL attack jets because of their support difficulties. According to Charles Davis (2006), the F-35B has a 25mm â€Å"missionized† gun which is put in the belly of the said aircraft and has a combat scope of at least 450NM. This combat radius is twice the specs of other STOVL fighters. The lift fan which is shaft-driven, including the vectoring rear exhaust nozzles provides power and abilities to the aircraft to (1) take-off in little distances, (2) increase speed reaching supersonic speeds in level flight, and (3) land vertically due to the lift-fan system. â€Å"The F-35Bs total vertical lifting thrust is about 39,700 pounds (the aircraft weighs about 30,000 pounds) which is more than 14,000 pounds greater than the engine alone would produce without the lift fan. The F-35B will be the worlds first operational supersonic STOVL aircraft today†. (Davis, 2006) This kind of aircraft that is going to be used by the U.S. Marines and the UK Royal Air Force is unique from the other kinds of aircraft because of its short takeoff/vertical landing capability. As mentioned in the first requirement for achieving this capability, the airplane must have more vertical lift than weight. The first requirement is regarded to have difficulties in achieving it. The airplane must have a smaller weight and have an increased thrust-to-weight ratio. The second requirement is fine controllability in every axis of the airplane at zero airspeed. The transition between up-and-away flight and hover must be carefully taken into consideration. Other critical factor that can affect the aircraft’s overall performance is â€Å"the airplanes hover footprint, which is the propulsion systems impact on the ground surface or carrier deck. The method in which thrust is developed is the key in producing a benign footprint†. (Global Security) Factors that must be considered are noise levels and heat effects on the deck and on the aircraft itself. Aside from the shaft-driven lift fan the aircraft has slightly shorter scope because the space utilized by the fan system for some of the fuel in the Air Force variant. Still, the aircraft has more than twice the range of an AV-8B on internal fuel and can carry a bigger payload. Pointing engine thrust directly down produces a tremendous amount of reflected energy, which results in all kinds of effects that make the life of the structures lessen. Acoustic considerations are material considerations because they affect material choices for the underside of the airplane as well as for structures and payloads attached to the airplane. The aircraft shares all of the electronic gear of the Air Force variant. Cockpit layout is also virtually indistinguishable, with the exception of a thrust-vector lever for the aerial mode. â€Å"The JSF X-35 demonstrator aircraft established a number of flight test standards from October 2000 through August 2001. The X-35B short takeoff vertical landing is the first and only aircraft in history to achieve a short-takeoff, level supersonic dash and vertical landing in a single flight. It is also first aircraft to incorporate and fly a shaft-driven lift-fan propulsion system. For the record, it has tallied 17 vertical takeoffs, 14 short takeoffs, 27 vertical landings, and five supersonic flights†. (Global Security) â€Å"The Department of Defense working groups and conferences started to question the community acceptance strategies for some new weapons systems. In particular, the Joint Strike Fighter (JSF) may face a variety of challenges in some possible beddown locations†. (Global Security) The aircraft generates an extraordinary amount of thrust from its single engine, which according to preliminary analyses, contributes to noise and air pollution. Investigations in San Diego, California revealed air quality limitations that may rule out unrestricted operation of the STOVL (Short Takeoff, Vertical Landing) version of the aircraft. And these will be acquired by the USMC. The highest thrust settings for the aircrafts F-119 engine will occur during transition to and from vertical flight. Noise and pollutant emissions, especially of Nitrogen oxides may exceed those encountered in any equivalent engine. On February 2004, there were some setbacks that occurred. As detailed design progressed, the weight estimates from early in the design phase were found to be unrealistic. The program leadership was soon faced with the harsh reality that the short takeoff/vertical landing (STOVL) variant would need to lose as much as 3,000 pounds to meet performance requirements. This was an unexpected negative development, and according to a few, the said fix will be either impossible or too costly and time-consuming. For the solution, the JSF constituted a re-plan phase in order to assess a number of issues pertaining to the aircraft design. (Davis, 2006) The Special Weapons and Tactics (SWAT) discovered a way of designing the STOVL F-35 that will meet or exceed its performance requirements. The team not only removed more than 3,000 pounds of unwanted estimated weight, but also improved the structure, improved the load paths and brought increased efficiencies to the overall aircraft. â€Å"The internal bays of the F-35B STOVL variant were redesigned in late 2004 and are now shorter and reduced in width, compared to the F-35A CTOL model†. (Lockheed Martin) â€Å"This was done to address the weight of the F-35B to meet other more important performance goals. As a result, the F-35B is no longer compatible with JSOW and 2,000-lb JDAM weapons. The largest weapon this F-35 variant can carry internally, as mentioned above, is the GBU-32 1,000-lb version of JDAM†. (Lockheed Martin)

Dreams in Invisible Man Essay -- Ralph Ellison, Invisible Man

   There are many types of dreams and many interpretations of those dreams. Dreams of power... of glory... of the past and the present... but none are as vivid as those that are found in Ralph Ellison's novel, Invisible Man. The dreams start occurring in the very beginning of Invisible Man. In the infamous "Reefer Dream", IM talks about a dream he had after he used narcotics. In this bizarre dream, IM hears a speech on "the blackness of black", is assaulted by the son of a former slave, and is run over by a speeding machine. All of this occurs while listening to "What Did I Do To Be So Black and Blue?"(pgs 9-12). This is one of the most significant dreams in the book. In another important dream, IM's deceased grandfather gives him a letter that says," To Whom It May Concern, Keep this Nigger-Boy Running (Ellison 33)." At the time IM had no insight to its meaning, but this dream would constantly be used as a reference throughout the story. Trueblood has a dream about his home, Mobile, Alabama, that directly affects IM's future. At the same time, Trueblood was having sex ...

Nokia Strategy Analysis Essay

1.Does Nokia have a truly global strategy, rather than just a series of regional strategies? Explain. Yes, it does have a global strategy. The global strategy of Nokia is the foundation of all the regional strategies and that is based on overall consumer needs. They found out the main consumer needs is focused on selling products (phones) as lowest price all over the world with its simple, easy and basic models. Also beside that Nokia has series of regional strategies that use most advanced technologies in terms of Camera, music and nanotechnology which is the future feature of the phones in e flexible shape and the last not the least is focusing on the business communications to compete with other companies in the industry and keep its position as the market leader. Therefore they placed their strategy in 3 facets: 1. growing the number of people using Nokia, 2. transforming the devices people use. 3. buidling new businesses. 2.Consider the different global marketing environments discussed in the text. How do these environments differ in developing versus developed countries? †¢Developing countries: African, Asian, Latin American countries and Middles East region have the highest sale volumes in a way that the half of the world population have cell phones and one of the three hold a Nokia phone, as China and India are among the countries with highest number of population and also got the highest number of sales, as an example 70 mil phones were sold in China in 2007 that is 38% more than the previous year’s sales. Basically the high demand for this product in these regions is for simplicity and user friendly system that the Nokia has along with its cheap price, as most of the people in these regions have very low income and in some place the mobile is shared by  ½ dozen of people who even cannot read or write ( mostly in Africa). In these regions (African-Asia) the main aim is connecting one person to another, could be a simple greeting phone call, or a simple test message. It does not matter if it’s colorful or black and white, or if it has a camera or Social group connection such as Facebook, Twiter or so on. The simple lifestyle will remain the same in the usage of  the phone as the phone will not stop the normal people gathering and family meetings while in the Developed countries it varys. †¢Developed countries: Europe consists of 39% of Nokia’s net Sale. It was not explained in the text what is the attraction of the European towards Nokia, but I assume it is based on the different features that each phone has that is different from another phone and also the user friendly technology that is used can be another reason as other competitors’ phones are a bit difficult to get used to. The U.S. only consists of 5% of the Nokia’s sale and the reason could be the people’s attraction is towards the most advanced technology smart phone that includes all the required and needy application in one slim size and light weighted smart phone and this is why most Americans seek competitors phone like, Iphone, Samsung, LG, Sony and Motorella and Black Berry phones. In terms of environment U.S is the place of business and fast communication, no double in this place the level of education is very high and simple phones are not the demand of the smart and highly educated individuals, they look for most advanced technology and the simplicity is not their main aim. They try to save time for meeting, gathering by a simple video call, or chat or so on which is the lifestyle of the people of the developed countries. 3.Discuss Nokia’s global strategy in terms of the five global product and communications strategies. Nokia, tries to get highest number of Nokia users not only through the low cost and simple mobiles that are mostly sold in the developing countries, it is also trying to grow in the niche markets that other competitors are focusing on such as the touch screen phones that were first introduced by Apple’s, and music focus products such as i-pod, in camera is competing with other phones and Canon as having more sales than Canons, and the business communication phones with advanced technology phones. The high amount of investment in R&D and expanding the range of products are all part of Nokia’s strategy in order to stay in the market and keep its position as the market leader for a very long period. I personally admire Nokia’s strategy as it is this keeps the Nokia brand name always speeded around for all the segments needs which is the main global aim of the Nokia meeting what the consumer want. 4.Can competitors easily replicate Nokia’s global strategy? Why or Why not? I don’t think so. As other companies are only focusing on their specific niche and investing in other niche needs high investment and it’s already taken by Nokia, and the only way is possible if there will be high investment in these companies to compete with Nokia. As most of the competing companies are not only Phone producers, they are producing a other electronic devices as well and their profit is gained from the whole range of their electronic devices that they sell and focusing only in one different targets of one single product (Mobile phone for low income individuals) would not be very beneficial for them to invest is. (Such as Samsung; Smart TV, mobile phones, Washing Machine, †¦.) But in future (about 20-50 years from now) I think as we go further the old technologies will be cheaper and cheaper, in a way that there will be less demand for these low cost mobile phones as most probably these will be available for free or maybe they will not be used at all as there are new products or devices that will be introduced that will replace the Mobile phone the same for other electronic devices who knows†¦? 5.Will Nokia’s planned expansion into other products and services work? Explain. In my opinion it won’t. As I have read in many places that Nokia had released a Laptop and its sales was not successful. I think Nokia is knows as a Mobile Phone producer and has to focus more on that market only. As if it produces other electronic devices, Nokia’s customer will lose their focus on the Nokia as the leader in the Mobile phone devices. Nokia if is trying to expand, its better to use the sample production as laptop, tablet for very limited period, as limited period only and study the market demand. If it was successful (which it was not in the first place) can expand its products slowly in the business-communicating devices only.

T2DM ( Type 2 Diabetes Mellitus A Study - 743 Words

A study detailing the occurrences of T2DM(Type 2 Diabetes Mellitus), and correlating them with the epigenetic modifications, the possible heritable effects on body metabolism, and the potential processes underwent by exercise and diet choices which affect the epigenome across generations has been conducted.While research on the epigenetic signatures causing insulin resistance, influenced by exercise and physical activity, and attempts to identify therapeutic solutions to avoid obesity and boost insulin sensitivity has been undertaken, it is the lifestyle choices and other individual environmental factors which form the key causes of the epigenetic modifications influencing T2DM and obesity across generations. Recent cases have been†¦show more content†¦The people having been affected by this famine during their late gestation had higher glucose intolerance, compared to people who underwent early gestation during the same period. Similar observations have been made during f amines in China, Austria, and Ukraine independently. A probable inference is deduced on incomplete nutrition during the critical phase of development of key organs and tissues in foetuses, the effects of which spillover across a generation. Other factors include the sex, stress underwent, and the diet of the patients as children.Overall, nutritional cues are the key factors affecting the genome across transgenerational epigenetic inheritance, an observation supported more strongly by studies on laboratory animals. Many studies have been conducted to observe the occurence of T2DM with changes in environmental factors, supported with epidemiological and experimental evidences. A low-protein, high-fat diet, coupled with stress hormones and calorie limitations affect the epigenome and influence the persons metabolic processes in the long term. A theory about the dynamic modification of the epigenome within the individuals life-expectancy is being increasingly backed by evidence, which might affect the persons metabolic health, and can be inherited by the future generation. Some forms of epigenetic modifications include methylation and hydroxymethylation forShow MoreRelatedSelf Monitoring Of Blood Glucose786 Words   |  4 Pages4. 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