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IRJET- Vertical Take Off & Landing Vehicles
1.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 04 | Apr-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 271 Vertical Take Off & Landing Vehicles D.B.Jagdale1, S.C.Pardeshi2 1TE Student, Mechanical, SND COE & RC, Yeola, Maharashtra, India 2Asst.Prof. Mechanical, SND COE & RC, Yeola, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Vertical Take Off and Landing Vehicles (VTOL) are the ones which can take off and land from the same place without need of long runway. This can gives the brief idea about numerous types of VTOLs and their advantages over traditional aircrafts. They can either be of manned type or unmanned type and can be in various sizes and scales. In this we have study, design and implementationofcontrolsystemof a vertical take-off and landing (VTOL) unmanned aerial vehicle (UAV) with level flight capability is considered. The platform structure includes both multi-rotor and fixed- wing (FW) conventional aircraft control surfaces; therefore named as VTOL-FW. The proposed method includes implementation of multi-rotor and airplane controllers and design of an algorithm to switch between them in achieving transitions between VTOL and FW flight modes. Thus, VTOL-FW UAV’s flight characteristics are expected to be improved by enabling agile maneuvers, increasing survivability and exploiting full flight envelope capabilities. Key Words: Aircraft control, autopilot, STOL, VTOL, UAV, PVTOL, UAV systems. 1. INTRODUCTION Vertical takeoff and landing vehiclescameintoexistencedue to experiments carried out duringtheyears1950 – 1970and almost all came out to be failures. Sometimes it used to have short run before the take-off hence they were also called STOL, Short run Take Off and Landing vehicle. The flight control and stability of VTOL/STOL is very difficult and is of prime area of research presently in this field. This paper focuses on how the VTOL emerged gradually over the years and depicts the current advancement in the field of aerospace. VTOL has basically three configurations up till current development in this field, wing type configuration, helicopter type configuration and ductedtypeconfiguration. Wing type has fixed wings with vector thrust engine or moving wings with engine, ducted type has ducted rotor which helps to provide lift, helicopter type has rotor mounted above it to provide lift. Initially the VTOL developed were of wing type configuration, primarily for military purposes and were man operated but later their importance was known and more and more advanced designs of it came into existence. The Hover eye platform from Bertin Technologies was first major step indirection of unmanned VTOL. The Hover eye platform brought breakthrough in the field of ducted type configuration of VTOL. Recent trends for unmanned aerial vehicles in the field of aerospace and photography application is well known. Various helicopter type configurations usedforUAV are explained along with their advantages over other configuration here. The latest ongoing research in this field is hover-bike which is a hybrid machine. It uses ducted rotors to attain required lift in order achieve itsobjectives.It can be either manned or unmanned. Its concept emerged from the Hovercraft which has hybrid capability and used ducted fan to hover and maneuver.Designwithsingle engine has problems of stability and the design with multi engine has problem of managing multi engines effectively. Engine with exposed rotors proves to be dangerous and so itshould be very well considered. The need of the hour is to design a quiet, low cost, low weight, high power to weight and effective control for VTOL and optimize its performance. Such VTOL can be used for anti-terrorist activity, for complete surveillance purposes. 1.1 What Is Vertical Take Off & Landing Vehicle? Vertical Take Off and Landing Vehicles (VTOL) are the ones which can take off and landfromthesameplacewithoutneed of long runway. Vertical takeoff and landing (VTOL) aircraft include fixed- wing aircraft that can hover, take off and land vertically, as well as helicopters and other aircraft with powered rotors, such as tilt-rotors. Some VTOL aircraft can operate in other modes as well, such as CTOL (conventional takeoff and landing), STOL (short takeoff and landing), and/or STOVL (short takeoff and vertical landing). Others, such as some helicopters, can only operate by VTOL, due to the aircraft lacking landing gear that can handle horizontal motion. 1.2 How Vertical Take Off & Landing Vehicle Work USING THRUST TO OVERCOME WEIGHT Rockets use thrust to reach orbit, but they aren’t the only type of vehicles that direct thrust down to create vertical flight. However, relying on the brute force of thrust to counteract weight requires far more fuel and energy than using the force of lift. Even so, an aircraft that can take off and land vertically can hover, fly slowly, and land in tight spaces-things conventional aircraft cannot do. To take off or land vertically, the powerful exhaust streams from a jet engine can be directed downward as well as backward, and their direction can be changed in mid-flight. This allows fixed-wing aircraft, such as the Harrier or the F- 35B, to take off vertically, fly forward, stop in mid-air, back up, and land vertically. They can also take off and land like a normal airplane. A helicopter’s spinningbladescreatethrust like a large propeller, but the thrust is directed vertically.
2.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 04 | Apr-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 272 This allows the vehicle to take off and land vertically and to hover. To move forward, the helicopter tilts slightlytodirect some of its thrust forward. A tilt-rotor is an aircraftthatuses pair tilt-rotors mounted on rotating engines at the end of a fixed wing to generate vertical and horizontal thrust. It combines the vertical capability of a helicopter with the speed and range of a fixed-wing aircraft. For vertical flight, the rotors are angled so the plane of rotation is horizontal, like a helicopter. As the aircraft gains speed, the rotors are tilted forward, with the plane of rotation eventually becoming vertical. The wing then provides lift, and the rotor provides thrust like a propeller. 2. LITERATURE REVIEW Most of the initial inventions of VTOL were of short run take off type or jump type vertical take-off and landing vehicles. Some of examples are Yak-38, MV-22 Osprey, NASA Puffin, Lockheed XFV-1 and Hawker. A. Yak-38 The Yakovlev Yak-38 was developed in Russia by Soviet National Aviation. Its first prototype was completed on 14th April 1970; it looked similar to Hawker P.1127 but had different working principle. In difference to Hawker P.1127 it had two smaller engines. It was the only VTOL vehicle of Russia and used for military purpose. Fig -1: Yak-38 B. MV-22 The Bell Boeing V-22 Osprey wasdeveloped byUnitedStates department of defense in 1981. It comprisedofdual function of VTOL and STOL combined. It came into existence due to the failure of the Iran hostage rescue missionin1980. TheV- 22 was finally evaluated in June 2005. It is a tilt rotoraircraft which while take-off and landing behaveashelicopter.Ithad helicopter type configuration. Fig -2: MV-22 C. Lockheed XFV-1 Lockheed manufactured XFV-1 in May 1951 and Convair manufacturedXFV-pogoin1951.bothwereexperimentsand completed their test flight. Fig -3: Lockheed XFV-1 D. Hover-eye micro UAV Going to unmanned small scale VTOLvehiclesalsotermedas Micro Unmanned Aerial Vehicle (UAV).Theyhavemorethan one rotor hence named as multi-rotor systems. They have fixed pitch propellers in comparetovariablepitchpropellers in helicopters. Presently more research is done in this field owing to the advantages of it to its size. TheHover-eyemicro UAV manufactured by Bertin Technologies was single rotor UAV platform for short range surveillance in military application. It had ducted type configuration.
3.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 04 | Apr-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 273 Fig -5: Hover-eye Platform Bertin Technologies E. The Harrier The Harrier was a jump style VTOL and was developed in Britain. It was also named as Harrier Jump Jet. Hawker Aircraft Company came out with this design in 1957. It was mainly used for military purpose. It could take off vertically if it is under its maximum loading limit. It can also take short run take off for better fuel efficiency. Fig -6: The Harrier 3. RECENT ADVANCEMENT In VTOL has led to research for hover-bike. It is concept of two rotors used to provide vertical trust by air channel duct and can be used by a person to ride like a bike. Several designs are depicted in the US patent (Sanders Jr. John K, Sanders J Kenneth, Aviles Jr Arturo, Aviles Arturo F). It is similar to dual-copter, Owing to its disadvantage, it is difficult to control it and very unstable. Research is done in order to get stable and easily controllable flight. It’s a ducted type configuration of VTOL and major area ofresearchinthe field of aerospace and automotive. Fig -: Hover-bike 4. APPLICATIONS VTOL vehicle can be used for various purpose like military applications, Surveillance application for Defense, Aerial photography, Payload caring, in Aerospace application, as a mode of transportation, as material delivery system, as AGV (Automated Guided Vehicle) in industries, for photography purpose, It can be used during natural calamities like flood, earthquakes etc. to know the whereaboutsofthevictimsand to provide them with food packets, for rescue missions, etc. Amazon is thinking of providing their product delivery through such mini VTOL vehicles recently. 5. CONCLUSION This gives information about recent advancesinVTOL. Thus we can get the rough idea about the Initial history of VTOL and the recent advancement in this field. It also depicts various configurations of modern UAV and itsprosandcons. This can enables next generation of vertical lift vehicleswith aggressive goals for efficiency, noise, and emissions to expand current capabilities and develop new commercial markets.
4.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 04 | Apr-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 274 ACKNOWLEDGEMENT We feel great pleasure to present the Dissertation entitled “VERTICAL TAKE OFF AND LANDING VEHICLES”. But it would be unfair we do not acknowledge effort of someofthe people without the supportofwhome,thisdissertationwork would not have been success. First and for most we are very much thankful to our Respected Guide Prof. Pardeshi S.C. for his leading guidance in this Dissertation work. Also he has been persistentsource of inspiration to us. We would like to express our sincere thanks and appreciation to Prof.Bhamre V.G (HOD) for valuable support. Most importantlywewouldliketo express our sincere gratitude towards our Friends & Family for always being there when we needed them most. REFERENCES [1] Whittle, Richard. The Dream Machine: The Untold History of the Notorious V-22 Osprey. New York: Simon & Schuster, 2010. ISBN 1-4165-6295-8. [2] P.1127 - Hawker's V/STOL Strike Aircraft a 1960 Flight article. [3] "Yak-36 Forger-interim V/STOL." Flight International, 2 May 1981. [4] "Vertical take-off/landing aircraft: Yak-38." Yakovlev Design Bureau, 16 July 2008. [5] "Heads up Fighters." PopularMechanics,May1954, pp. 96–97 [6] John K. Sanders, Jr, J. Kenneth Sanders, Arturo Aviles, Jr., Arturo F. Aviles"quietvertical takeoffand landing aircraft using ducted, magnetic induction air-impeller rotors" US 7,032,861 B2 . [7] Binetti, P.; Trouchet, D.; Pollini, L.; Innocenti, M.; Hamel, T.; Le Bras, F. (2007) “The Flight Control System of the Hover-eye® VTOL UAV” [8] http://aerofex.com/theaerox/
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