Available online at www.ijiere.com International Journal of Innovative and Emerging Research in Engineering e-issn: 2394-3343 p-issn: 2394-5494 Design and Development of Hover bike Umesh Carpenter (Asst. Professor), Nitin Rathi (Asso. Professor) Acropolis Institute of Technology & Research, Indore (M.P.) India ABSTRACT: This design of hover bike can work more efficiently as it is easy to operate and can be applied to various purposes because it does not need a runaway and is capable of hovering from any terrain. Thrust vectoring can be done by special design and technique so it can able to fly at almost all directions. It is designed with a ducted fan, so that the slip of air is less. Hence its aerodynamic efficiency is high. Moreover, it can able to take off and land vertically from any terrain. Our Hover Bike will be based on present motorcycle technology. We will use the chopper as the basis for our Hover Bike. Current motorcycles have two wheels. Our Hover Bike will change that because it will have thrusters to hover. A ducted-fan bike is mobile and can be deployed rapidly, which makes it well suited for a variety of missions such as reconnaissance and surveillance performed by soldiers at the platoon or squad level. Also, it is aerodynamically efficient because the lift generated by the duct can create a thrust force that is higher than the other VTOL vehicles, which have no duct and therefore no hovering flight mode. In the case of the ducted-fan type flying bike, its rotor is covered with duct, which lowers the risks of rotor damage caused by tiny bugs and foreign object. Finally, the duct-fan type bike was developed under an innovative operational concept of landing on small areas such as the roof of a building, and of preventing excessive fuel consumption during hover flight.[3][5] Keywords: Hover bike, Design and Development, Flying Motor Cycle, transportation and military, Creo 2.0 and ANSYS. INTRODUCTION A hover bike can be defined as a combination between a motorcycle and a helicopter. Ideally, such a vehicle would be able to allow people to navigate the earth in a new and unique way. A well-designed hovercraft would be able to take off and land vertically, maneuver slowly through tight spaces, and hover in place. To date, no commercially viable hover bike has been built, though some test prototypes do exist and are in development. Our goal is to produce an extremely reliable helicopter, designed with rugged simplicity at its heart and true pilot safety built into the design and operation of the aircraft. Nothing we are doing is new. We are not developing any new component or system that has not been designed and thoroughly tested before. If we are doing anything new it is the combination of existing systems. We believe that the best step forward is just that a single step forward. [3][5][7] PRINCIPLE The main principle behind the working of this new breed of vehicle is 3 rd LAW OF MOTION. Manufacturing this hybrid vehicle not just requires a high-end design, but also requires the perfect choosing of material in order to enhance its ability to fly and also make it worthy enough to work for more tenure. The basic light weight material available to mankind is Carbon Fiber, In this design we are considering same material for frame which suite the required parameters for building this vehicle. 61
Fig (a): Working Principle Fig (b): Prop Rotation Direction[7] At a hover, all four props would be spinning at the same speed, producing zero net torque about anybody axis and zero net force on the vehicle once gravity was taken into account. In order to roll or pitch the vehicle, one prop would speed up while its opposite partner in rotation direction would slow down. The result was a roll or pitch moment caused by the difference in thrust produced between the two props. However, since both props changing speed, one increasing while the other decreases, share a rotation direction, the reduction in drag on one prop is countered by the increase in drag on the other prop, resulting in no net torque about the yaw axis of the vehicle. [5] DESIGN CONCEPT The conceptual design phase included primarily the determination of the general layout and design of the next-generation hover bike. The first step in this phase was the identification of design goals. After some search we decided upon the following fundamental vehicle requirements: Ability to hover Maneuverability in all directions about hover Endurance of no less than ten minutes ten minutes was judged a practical minimum to allow for sufficient useful flight time between takeoff and landing Sufficient control effort beyond hover to ensure a controllable vehicle. Onboard power supply and processing realistic applications would not allow tethers In addition to these primary requirements, the following qualities were identified as desirable if achievable without detriment to the primary requirements: Electric power supply preferable for ease and safety of use and quiet, indoor operation (I use motor engine instead of electric motor for more thrust) High residual thrust to hover thrust ratio an acrobatic vehicle was desirable for its ability to demonstrate controllability in difficult to perform maneuvers Minimal cost and complexity [6][7] DESIGN CHALLENGES Low weight. Load resistant. Negligible structural deformation at maximum efficiency. Analysis on an economic material satisfying the required parameters of a basic craft. Having a long working tenure without any structural deformation.[3] 62
STRUCTURAL DESIGN The frame design developed took a simplistic approach. The main ideas taken into consideration were the housing of the motor engine and the propellers, a place for the rider to sit. We are using Carbon fiber as a material for frame with Chassis cage pipe thickness 3mm. Structural supports were added to key areas of the frame. The added support below the propellers greatly improved the performance. STRUCTURAL ANALYSIS Using ANSYS I have done analysis on frame and truss system of our designs. Before going to the analysis part the main challenge is to know the exact weight of the total system, because the structure had to not just balance its own weight or the human weight but also of the various components which was going to make it fly. The various components which were going to be added to the structure in order to generate a sustainable and powerful lift are S.No. Components Qty. 1 Engine 1 2 Seat 1 3 Propeller 2 4 Mountings 4 Table 1.0: Hover bike component [3] The carbon fiber material has allowed us to have less weighted frame which can also able to withstand during the flight with all these components over the materials like stainless steel and aluminum structure whose major drawback is that it has a density of 7850 kg/m 3 and 2830 kg/m 3 respectively which is more than 1750 kg/m 3 of carbon fiber. [3][6] 63
DUCTED FAN This ducted-fan type bike is easy to operate and can be applied to various purposes because it does not need a runaway and is capable of hovering from any terrain. For this reason, the military has shown continued interest in ducted-fan vehicles. A ducted-fan bike is mobile and can be deployed rapidly, which makes it well suited for a variety of missions such as reconnaissance and surveillance performed by soldiers at the platoon or squad level. Also, it is aerodynamically efficient because the lift generated by the duct can create a thrust force that is higher than the other VTOL vehicles, which have no duct and therefore no hovering flight mode. In the case of the ducted-fan type flying bike, its rotor is covered with duct, which lowers the risks of rotor damage caused by tiny bugs and foreign object. A ducted-fan flying bike has very peculiar configurations and therefore, it is necessary to consider the exact dynamic modeling of this flying bike. The unstable flow due to the complicated design of the inner duct combined with static and dynamic instabilities makes the aircraft extremely hard to control. [3] NUMBER OF BLADES FOR PROPELLER The lower the number of blades on a propeller, the more efficient the propeller is. The more blades included the more blade area there is to create more pressure to lift. With the four-foot diameter propeller design, two blades give plenty of area for lift, and keep it an efficient design at the same time. We are using a 2 blade propellers in our Hover bike. [1][3] ENGINE SELECTION MOTOR ENGINE: Using bike engine in the hover is quite difficult because of its weight and difficulty in operating efficiently, but to flight a bike with a driver is not easy task for electric motor as it not able to generate that much amount of thrust. In our design we are trying to use an engine of 1100 cc to generate an amount of thrust to flight the hover easily. 64
ELECTRIC MOTORS: Using electrical power from a battery to move vehicles has been around for over a century. Early on it was not widely used because it was less understood, and harder to implement. Recently there has been much research done on improving batteries and electric motors to increase efficiency and power generation. The full-range of applications of these technologies has not been fully explored yet. Electric motors are quiet, energy efficient, and environmentally friendly. However, the biggest problem with the electric motor is the cost to obtain one with the sufficient power capability to lift the bike off the ground. [1][2][3] CONCLUSION The Hover bike is a combination of the simplicity of a motorbike and the freedom of a helicopter to create the world s first flying motorcycle. When compared with a helicopter, the Hover bike is cheaper, more rugged and easier to use and represents a whole new way to fly. The Hover bike flies like a quad-copter, and can be flown unmanned or manned, while being a safe low level aerial workhorse with low on-going maintenance. The Hover bike has been designed from the very beginning to replace conventional helicopters in everyday one man operational areas like cattle mustering and survey, not just for the obvious fact that it is inefficient and dangerous to place complex conventional helicopters in such harsh working environments but also from a practical commercial position in which bringing to market a cheaper better product will not only take over the existing market but can open it up to far more new customers who before could not afford the upfront costs of a typical helicopter and the very expensive and often unlooked for maintenance costs. REFERENCES [1] M. L. Mil, A. V. Nekrasov, A. S. Braverman, L. N. Grodko, and M. A. Leykand, Helicopters Calculation and Design, Vol. I. Aerodynamics, 9, 1967 [2] HoverBike.com." Web. 10 Jan. 2013. http://hoverbike.com. [3] http://www.hoverbike.com/blog/development-roadmap/ [4] http://spectrum.ieee.org/techtalk/tranportation/alternativetransportation/aeroxhoverbike-goes-on-sale-in-2017 [5] http://www.ijirset.com/upload/2015/may/131_designing.pdf [6] http://www.dailymail.co.uk/sciencetech/article-3565291/forget-hoverboards-s-hoverbike-watch-eccentricengineer-fly-floating-bicycle-shoots-fireworks.html [7] https://www.rairarubiabooks.com/related-pdf-hover-design-notes.html 65