Advantage And Disadvantages Of Fixed Wing Versus Rotor Wing Engineering Essay

Advantage And Disadvantages Of Fixed Wing Versus Rotor Wing Engineering Essay Since 1919, law enforcement agencies have used fixed wing and rotor wing aircrafts to assist in enforcing the law. In 2007, data from the Bureau of Justice Statistics showed that large law enforcement departments provided aerial enforcement in the District of Columbia and 46 states. There were 295 airplanes and 604 helicopters being operated, which flew more than 330,000 missions. http://bjs.ojp.usdoj.gov/content/pub/pdf/aullea07.pdf The types of airplane that are used by law enforcement are Cessna 182, Cessna 206, Pilatus PC-12 Spectres, P-3 Orions, Citations, Learjets, Gulfstream jets, King Air 350s and 200s and some larger airliner-type aircraft. Some of the helicopters used are the American Euro-copter EC120/130/145, AStar AS350/355N/350 B2, Dolphin HH-65C, Blackhawk UH-60, Maverick, Raven II R44, Cayuse OH-6 and McDonnell Douglas MD 600. The types of missions these aircrafts conduct are surveillance, drug interdiction, fugitive searches, routine patrol or support, search and re scue, personnel transport, prisoner transport, SWAT operation, traffic enforcement, speed enforcement, homeland security, photographic, medical support and evacuation. Both types of aircrafts have their advantages and disadvantages in airborne law enforcement. http://www.kansas.com/2010/08/01/1427779/aviation-sees-growth-in-law-enforcement.html. The advantages that a helicopter has over an airplane are that they can land and take off without the need for run ways. Their airfoil shape rotors are like the wings of an airplane, as the rotor spins, air flow faster over the tops of the blades than it does under, thus creating lift for flight. Their unique rotor design allows for them to takeoff vertically, fly in any direction including sideways, backwards and hover over an area. Their ability to hover provides coverage for the ground units on the street and if needed land to assist in foot pursuits. They can be equipped with a winch for the purpose of lowering or picking up personnel or equipments on the ground, at sea or on mountains during a search and rescue mission, where there is no place to land . They are better able to maneuver around tall structures at lower altitudes. manhttp://library.thinkquest.org/J0112389/helicopters.htm. On 14 November 2008, San Diego Police Department ABLE helicopter used the FLIR camera to catch a man facing murder charges for beating another with a crutch in the middle of the street. http://www.policeone.com/police-products/tactical/night-vision/videos/5954944-police-helicopter-catches-bizarre-street-fight-on-flir-camera On 30, January 3013 the NYPD police helicopter rescues a shipà ¢Ã¢â€š ¬Ã¢â€ž ¢s captain who was having a heart attack. A dramatic nighttime helicopter rescue in New Yeark Harbor may have saved the life of a shipà ¢Ã¢â€š ¬Ã¢â€ž ¢s captain. Police say they received a call Tuesday night that the captain of the Panamanian cargo ship Grey Shark was having a heart attack. The NYPD harbor medical team stabilized the 6 0 year old captain before calling the help of a police helicopter. A basket was lowered to hoist him up into the chopper, which then flew him to Staten Island University Hospital North. He was listed in stable condition. http://www.ny1.com/content/top_stories/176246/police-helicopter-rescues-ship-captain-who-was-having-a-heart-attack The helicopters are force multipliers for ground units, because they can monitor the tactical environment, give alerts or observe things which the ground units are unable to detect. Additionally, they can respond and cover ground more quickly than ground units. The flight deck of a helicopter can be equipped with multiple electronic equipments. Electronic Flight Instrument System (EFIS) also know as glass cockpit that provides flight and system information to the crew, Forward Looking Infrared (FLIR) camera allows the crew to see images created from infrared energy, moving map system show their location, satellite phones provide direct communication, di gital video downlink gives real time images, night vision goggles can be used in low light situation if needed, loudspeakers for communication or message deliver to the ground, tear gas dispensers, police and aviation radios . Disadvantages helicopters are that they cost more to operate and maintain. A fully equipped helicopter can cost from $500,000 to $3 million and the flying costs ranges from $200 to $400 per hour. http://usatoday30.usatoday.com/news/nation/2007-09-30-cophelicopters_N.htm Maintenance, fuel, leasing and financing cost are three times then the cost to operate and maintain airplanes. Due to its abilities to fly lower and hover over areas it creates lots of noise and is easily detectable. The capacities of passengers that a helicopter can carry are limited. The Robinson RA-44 can carry 2 to 4 personnel and others like the Blackhawk UH-60 can carry 11 personnel or the Bell UH-1 that can be configured to carry 15 personnel. The general commercial helicopters used by t he law enforcement agencies have a flight time of two to four hours, with top speed from 50 to 200 knots and an average range of about 200 miles. The operations of fixed wing aircraft have some advantages over rotor wing aircrafts in law enforcement. They can perform a wide range of missions which requires them to stay airborne longer then a rotor wing aircraft is able to. Fix wing aircraft can carry more payloads and engine performances are great then those of rotor wing aircrafts. Aero surveillance, homeland security, speed enforcement and transport of people or gear are mostly the missions performed. http://www.lawofficer.com/article/patrol/fixed-wing-aircraft-law-enforc They are equipped with a variety of high tech equipments just as their rotor wing counterparts. The cabins are pressurized and allow for higher altitude flights. They can perform surveillance 5,000 ft to 6,000 ft and not be undetected. The average costs to maintain and operate a fixed wing aircraft per flight is about $54 for maintenance and $45 for fuel compared to a rotor wing aircraft. http://bjs.ojp.usdoj.gov/content/pub/pdf/aullea07.pdf The Custom Border Patrolà ¢Ã¢â€š ¬Ã¢â€ž ¢s P-3 AEW Orion airplane has a large fuel capacity of 60,000 lbs; flight time up to 10 to 13 hours, maximum range at low altitude is 2,500 NM and at high altitude 3,800 NM. Average cruising speed is 300 to 330 knots. It can carry a crew of 12 to 21 personnel. Normal crew consists of four systems operators, three pilots, two flight engineers and three maintenance crew members. This aircraft is integration with the E-2 Hawkeye aircraft radar system, which allows for it to see 200 NM in all directions. They coordinate and direct Navy and Coast Guard ship and aircrafts to the location of drug smuggling boats or planes. Primary mission are interdiction, over water operations, surveillance and homeland security. The use of this aircraft between the Jacksonville, Florida and the Texas office have contributed to the cap ture and seizure of 50 metric tons of drugs worth a roughly about 2 Billion dollars. http://www.youtube.com/watch?v=vqCtrB_FZvE Fixed wing light sport aircraft generally cost between $60,000 and $130,000 to purchase and $50 per hour to fuel and maintain. They can fly at wide range of speeds of 35 to 125 knots making them an excellent platform for performing a broad range of law enforcement missions. It can carry up to 500 lbs and travel twice as far as a helicopter could. http://nij.gov/nij/topics/law-enforcement/operations/aviation/types-of-aircraft.htm The disadvantages of fix winged aircrafts are they require a runway to take off and land, assembling of the flight crew, delay on taking off due to congestion at airport, unable to see the other side of the aircraft. They cannot monitor the tactical environment very well and or unable to alerts or observe things which the ground units are unable to detect. Unable to land and assist with foot pursuits, canà ¢Ã¢â€š ¬Ã¢â€ž ¢t hover, t he aircraft is not equipped with rescue winch.

SLP 5 HRM - 401 EMPLOYMENT LAWS Essay Example | Topics and Well Written Essays - 750 words

SLP 5 HRM - 401 EMPLOYMENT LAWS - Essay Example Over the past decades a body of legislations or law has designed employer/employee relations as well as the rights of both employers and employees in the workplace environment. These employment laws regulate the duties and rights of both employers and employees. It is also referred to as labor law (Kellough,  2007). Virtually, the rules are tasked to keep employees safe and ensure that they are treated well. However, several laws are there to safeguard the interests of the employers. In essence, employment laws are based on state and federal constitutions, court opinions, legislation and administrative rules. For example, the American labor laws are attributed to the oppressive practices of the industrial revolution. The first laws to compensate workers were passed in the early 20th century, it established a minimum wage, outlaws child labor and designed standard for work. During the onset of 1960s and early 70s the Congress sorted to forbid risk working environments and discrimination at work. The employment law advocates for free interaction between the employers and the employees. The current issues in the employment sector include equality in men and women as well as the employee healthcare. In a business scenario, employment laws should be used to create harmony and justice among the employers and the workers (Davis & National Business Institute, 2007). Indeed, the federal government is in the fore front to ensure that the rights of both the employees and their employers are not infringed. Wage and hour laws within the employment laws regulates hours that employees should work. In most cases the law requires that after 40 hours wage must be paid. A viable employment law should integrate matters of public policy. For instance, employers are not allowed to fire workers because of discrimination reasons. Additionally, employee cannot be fired because of filing a worker’s compensation claim

Accounting II Essay Example | Topics and Well Written Essays - 2000 words

Accounting II - Essay Example This form of company typically have unlimited life and ease of ownership transferability in addition to owners limited liability. Examples of such companies are Microsoft and HP (Brigham & Ehrhardt, 2008). The accounting treatment of partnership takes company as an entity which is separate from partners’ personal affairs (Horngren, Bamber, & Harrison, 2005). The major difference in the accounting of corporations and partnership is the calculation and disclosure of the capital of the organization. Corporations are required to prepare and publish audited annual and quarterly reports which could be accessed by shareholders. These annual reports contains statements including income statement, balance sheet, cash flow and changes in shareholders’ equity. Financial reports are not published for external users by partnership and tax return is submitted as part of individual tax forms. There are different ways of identifying whether a company is a partnership or corporation. Firstly, partnerships and corporations fall in different tax regimes. In partnership entity is not liable for tax and it is deducted from owner’s personal income. IRS has set out guidelines for distinguishing between partnership and corporation. In addition to the characteristics discussed above if one partner has the power to dissolve company then the characteristics of corporation is absent. Shareholders of corporations can sell their stock to third party however in partnerships there is general lack of transferability. There is also centralization of management in partnership whereas in corporations there is a board of directors which comprise of company’s shareholders (Brickman, 1991). ï‚ § What does a statement of cash flows tell us about the short and long term prospects of the firm? How does an outside review use a statement of cash flows and other financial statements to assess the viability of the firm? Companies prepare cash flow statement on a periodic basis for