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Helicopter

Transcript: Etienne Oehmichen Quadrotor helicopter Traveled 1,181 feet April 14, 1924 Second Evolution Then and Now By Mason Miller First Flight The Evolution of the Helicopter Gyroplane #1 Jacques and Louis Breguet Summer of 1907 Hovered at 2 feet for one minute Required human help for stability Cornu Helicopter Used two 20 ft. counter-rotating rotors Paul Cornu Hovered 1 foot for 20 seconds Free flight with no stability help . "Helicopter." Wikipedia. Wikimedia Foundation, 15 Jan 2015. Web. 15 Jan 2013. Horizontal Travel Modern Engine

Helicopter

Transcript: Helicopter Advancements Nicolas Florine Sikorsky paved the way for mass helicopter production. By the end of WWII he had produced over 400 helicopters. First Helicopter First flight occured in 1907. Paul Cornu developed and tested the helicopter Helicopter innovation and production was stimulated by WWII and the need for another dimension in war Paul Cornu's helicopter that he developed had two counter rotating rotors that were driven by a 24 horsepower engine Sikorsky Individuals His company, Sikorsky Aircraft, still produces many helicopters today A major advancement that made the helicopters possible was the engine. When Paul Cornu developed the first helicopter he had to have an engine to turn the blades Florine The Germans were the first to use them in WWII and they used them for medical evacuation, transport, and observation The helicopter achieved a height of one foot and stayed aloft for 20 seconds developed first helicopter that would be mass produced for the U.S. armed forces Developed the first helicopter for civilian use called the Bell 47 Time Period Date of Achievement "Tarhe" Sikorsky S-65 Future Achivements Sikorsky S-64 "Black Hawk" Sikorsky MH-53 Igor Sikorsky built the first twin tandem engine that achieved free flight "Super Stallion" D'Ascanio Corradino D'Ascanio built and tested the first coaxial helicopter It is the first free flight with a helicopter recorded Sikorsky S-70 "Pavelow" They have designed and built many military helicopters including... Bell Aircraft

Helicopter

Transcript: The helicopter of today Helicopter The name Helicopter came from the words helico which meant spiraling and the word pter meaning wings. The man that invented the first helicopter was Igor Sikorsky George de Bothezat a Russian engineer was the first to fly a helicopter successfully for 90 seconds in Dayton in Ohio 1922. The flight was also the first successful flight sponsored by the U.S. Army since then helicopter flight has not only helped our country in war but also helped the people who live in it First Helicopter Why was the helicopter invented? Helicopters in Korean War During the Korean war helicopters lowered the death rate because it was used as a aerial ambulance which caused a great push in war compared to the previous year. After the Korean war the Helicopter was designed to carry 45 soldiers or almost 100 civilians. After this improvement the Helicopter began being not only for saving people and transportation but as well as a gunship, aerial assault, and command centers Since man first made air transportation it has majorly improved from it taking days to get place to place to now where it only takes a few hours to do so, helicopters have been a major step toward the creation of transportation through the air Helicopters in war Template by Missing Link Images from Shutterstock.com Free flight The helicopter was created because it was smaller than a plane which gave it the ability to land where airplanes couldn't. Another the helicopter was invented was to serve a similar purpose as the plane which was to find the fastest way to get places

helicopter

Transcript: Paul Cornu's helicopter in 1907 helico Introduction History First Flights Development Design features Use and application Introduction Anti-torque features Leishman, G.J. (2006) Principles of Helicopter Aerodynamics. 2nd edn. New York: Cambridge University Press Early Design “Aerial screw” created by Leonardo da Vinci in 1480s spiral Thank you for listening! A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors. Igor Sikorsky: the father of helicopter Turboshaft : A form of gas turbine which produces shaft power. gas turbine engine pter The rotor system, or more simply rotor, is the rotating part of a helicopter that generates lift. wings References Rotor system Chinese bamboo flying toy in around 400BC Transportation of people and cargo Military uses Fire-fighting Search and rescue Tourism Agriculture The Development And Application Of Helicopters Yunkai Wang (Kevin) The University of Manchester PS10b Group 14 Tutor: Wendy 2015 Igor Sikorsky in the VS-300 at the end of 1941 Engines History Aircraft engine Treager, I.E (1996) Aircraft Gas Turbine Engine Technology. 3rd edn. New York: McGraw-Hill Companies turbojet turbofan turboprop turboshaft propfan Use a small tail rotor to counter the torque effect. Design features Overview Development Use and application A turbine engine used in the Mi-2 helicopter piston engine Any questions? First Flights coined by a French writer Ponton in 1861 main rotor Origin of the name ambulance helicopter tail rotor

Helicopter presentation

Transcript: Overall Benefits Safe navigation Efficient travels Commercial benefit Difference to planes Land almost anywhere Flies lower altitudes Propellers Military Use Carry weapons Reconaissance Transport troops Drawbacks Slower than planes Hard to fly Noisy Accessibility Capabilities Transport cargo Travel long distances Move any direction Budget options available Daily renting options Travel tours available Uses Used for military Search and rescue Tourism and tours How it works Blades push air Flies with lift Like airplane wings Benefits Helicopters Easily Manueverable Lifts heavy objects Cheap options Safety Concerns Safer than cars Weather causes incidents Low crashing chance Invention Invented in 1938 Igor Sikorsky created First flight 1939

Helicopter presentation

Transcript: The accident helicopter was a Bell 206B Jet Ranger and was manufactured in 1974 by the Bell Helicopter Company in Texas, United States. Since then, the helicopter had about 16 500 total hours in service. The helicopter then carried out a low-level visual inspection of high-voltage electrical power lines that passed through the suburban areas of Cranbrook. At about 1306, as the helicopter was flying southbound at about 120 feet above the ground, a sudden loss of engine power occurred causing rapid loss of rotor rpm. The helicopter descended quickly and landed heavily on a paved street below the flight path. The helicopter struck a pedestrian on the sidewalk adjacent to the impact point, as well as a motor vehicle travelling west on the street. Sources For fun video :) several operational conditions existed to present the pilot with agreater- than-usual challenge for an emergency landing following the loss of engine power,namely: Obstruction on the final flight path low height above the terrain low rotor rpm; and short time frame. Other findings : The cause of the loss of engine power was not determined; it is possible that a mechanical event with the fuel control unit or the power turbine governor occurred, or fuel starvation, or some combination of these. During the last two seconds of flight, the helicopter descended almost vertically to the street in a nose-up, left-side-down attitude. The tail boom stinger and tail rotor blades struck the ground first, causing the tail rotor gearbox section to break off. The crash day At the crash site Crew: 1 passengers: 4 propulsion: 1 Turboshaft engine engine model: Allison 250-C20B engine power: 420 shp speed: 241 km/h Rotor Blades (main/tail): 2/2 Empty Weight: 730 kg Bighorn Helicopters Inc. revised its operational practices regarding low-altitude flight and introduced a higher level of internal oversight. Additionally, it embarked upon a dedicated safety management system. Safety actions Not the same helicopter just for action A helicopter comprises three major parts — the engine(s) including related systems, the rotor system drive train, and the airframe with its related systems. It can be reasonably argued that few airframe failures can cause a helicopter turbine engine to lose power or stop. Despite the destruction of much of the helicopter, critical components did survive, and no evidence was found that an airframe or drive train event caused the engine to lose power. The crash day! Aircraft Information Pictures of the crash Helicopter presentation Aircraft specifications Thank you Helicopter Crash The Bell 206 JetRanger is a single-engine five-seat light utility helicopter. Possible failure causes The helicopter broke into several pieces and burst into flames. The three occupants of the helicopter and the pedestrian were fatally injured at impact. The motor vehicle was damaged but its occupant was uninjured. The helicopter was destroyed by an intense fuel-fed, post-crash fire. The emergency locator transmitter (ELT) was consumed by the fire and it is unknown if it transmitted a signal. The accident site is located within the city of Cranbrook at latitude 49o29'56" N and longitude 115o45'40" W, at an elevation of about 3100 feet above mean sea level. A loss of engine power is the result of either pilot action or mechanical event. A pilot can roll off the throttle or close the firewall fuel valve, but given the low profile of the accident flight, there is no scenario in such flight conditions to cause an experienced pilot to do so, with one exception — a complete loss of tail rotor thrust. The tail boom and tail rotor survived the accident and an examination revealed no tail rotor anomaly. Accordingly, it is unlikely that deliberate pilot action precipitated the engine power loss. At 12:09 mountain day light time, Helicopter C-GCHE took off from Bighorn Helicopters heliport on the outskirts Cranbrook, British colombia, with the pilot and two passengers on board. Since the accident, Transport Canada (TC) crafted a logic chart for pilots and operators to guide them in correct decision making regarding the minimum altitudes and distances over built-up areas prescribed by the Canadian Aviation Regulations (CARs). Picture of the Helicopter moments before the crash 13 May , 2008 That's all!!! specifications: http://www.vancouversun.com/pdf/Choppercrash.pdf http://www.tsb.gc.ca/eng/rapports-reports/aviation/2008/a08p0125/a08p0125.asp http://summithelicopters.ca/fleet/ Loss of engine power

Helicopter Presentation

Transcript: Revolutionary Helicopters http://www.aerospaceweb.org/question/performance/q0229.shtml http://www.helis.com/featured/world_records.php AirbusHelicopters.com SikorskyHelicopters.com RobinsonHelicopter.com Bell-47 A new age of helicopters Main cannon Sikorsky is developing an X-2 which is a coaxial main rotor with pusher-prop Simple Helicopter Facts When the collective of the helicopter is raised or lowered, all of the main rotor blades blades change angle of attack equally, providing lift. When the blades are moved cyclically, they are moved individually at different angles of attack throughout the rotation of the blade. Combined, you can produce lift or thrust, forwards, sideways, or backwards. Favorite Helicopter Fuel tank holder Helicopter Presentation Cody Butler Period 5 My personal favorite helicopter is the Boeing AH-64 Apache due to its battlefield superiority, capabilities and its looks too. The Apache attack helicopter is considered the most advanced combat helicopter. Rockets 1937 - first recorded successful helicopter flight 1966 - farthest non-stop helicopter flight, from California to Florida (3561.55 km) 2010 - highest recorded helicopter speed (287 mph) 1972 - highest recorded helicopter altitude (12442 m) Helicopters can take off and land vertically Helicopters are able to hover in place and maintain a stable altitude Helicopters were developed in the early 1900s and thought of long before then by artists such as DaVinci Bell-47 during the Korean war Bell UH-1 Huey during the Vietnam war Bell AH-1 Cobra during the Vietnam war, first dedicated gunships Robinson R-22 revolutionized the training helicopters (built in Torrance, Ca.) Sikorsky UH-60 Blackhawk and MD AH-64 Apache during the gulf war Whats Next? Airbus helicopters is in development of the X-3 hybrid which is a single main rotor with two thruster propellers on winglets The worlds smallest helicopter is the GEN H-4, rotor diameter: 4 meters, weight: 154 pounds The world's largest helicopter is the Mil V-12, wingspan across rotors: 67 meters (about 220 ft),weight: about 152000 pounds The Vietnam war was sometimes known as the helicopter war. Troops were airlifted in and out of the battlefield. Helicopters were also used for medical evacuations and took soldiers and later civilians to hospitals when necessary. Bell AH-1 Cobra Bell UH-1 Huey Fun facts Achievements How the main rotors are controlled Bibliography

Helicopter Presentation

Transcript: End Of Experiment Materials Used We used ten different helicopters excluding the control helicopter.All of which have different factors Factor 1 - Wings Helicopter Presentation Made by:Lutfi,Brian,Fitri,Li en Factor 2 - Weight Factor 3 - Place Method Conclusion We made prototypes of the model helicopter by changing its size and the weight of the helicopter, then compare it to the actual model to compare the time taken for it to reach the floor using a stopwatch.We also changed the height it was dropped and the venue of the test so that we could compare all the factors which makes the paper helicopter float better or worse than the control helicopter Hypothesis We'll be presenting our hypothesis and how we got to this hypothesis. We will also explain what materials we used for this experiment. The wings of the helicopter cannot be too big or too small.If its too big it'll be very heavy and cannot fly.If its too small it'll be very difficult for the helicopter to float for a long period of time. Results While Testing So that sums it up for this experiment with paper helicopters. We hope you liked this presentation. Thank you ever so much for listening to us talk about this presentation. The weight at the bottom also cannot be too heavy nor too light. Making it too heavy will make it fall to the ground very quickly. Making it too light might make it unbalanced with the wings and it will fall to the ground from the top. Making it twisted will help with the rotation of the rotors with the ideal amount of weight. For the paper helicopter to fly the longest we need Wings that are the correct size.Not too small and not too big Model creates enough drag so it will float for a longer period of time Correct amount of weight Not too less weight or it will not floatbut imbalance Not too much weight or it will fall to the ground very fast Best conditions in the area of flight having correct amount of heat. Remove unnecessary parts Our hypothesis is that if we change a few factors like increase wing size, weight and conditions in the surroundings (more heat, no wind) ,the helicopter would stay in the air for a longer duration. Places with more wind or more heat will affect the flight of the helicopter.With more wind, the helicopter will flight time might be worse or better depending on the wind direction. With heat,the flight time will be better as hot air rises touching the blade causing the paper heli. to stay in th air longer. For this experiment we used, -Paper -A pair of scissors -A stopwatch -Some paperclips - A skinny human Introduction

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