Slide 1

THE HOVERING AIRCRAFTVERTIGO V-5The DesignBased on the Great sweepback wing model.Partially inspired by the B2 Stealth Bomber.The entire plane including the fuselage is a wing.Consists horizontal rotors on the sides, on the body.Consists a single spinal thrust engine.

The WingThe wing is extremely aerodynamic.The entire aircraft is the wing.Our design consists two rotors on the wing, symmetrically placed.The wing tapers to the side edges.The ailerons are fitted towards the ends.

RotorsMain function is to generate lift while taking off.This design makes the runways obsolete.Take off and landing in any landscape is possible.Hovering is possible by balancing the weight force with the lift force.

Design of the RotorsIn principle, these rotors work the same way as in a helicopter, except there are two in use here.The rotating motor will tend to cause a gyration effect.To take care of this the other motor will rotate in the opposite direction with its reverse blade angles.

The combined effect of the rotor helps in landing and taking off without using a runway.The total blade area of the rotors is directly proportional to the thrust force generated.So we can use required number of blades in the rotors.In our design we have used only two rotors, more rotors can be used to reduce the load lifted by each separate rotor.Thrust Engine The Vertigo V-5 has a centrally placed spinal thrust engine.It is provided with dual cheek inlets.Provides direct feed to the gas turbine.The thrust engine in the Vertigo V-5 is only used the planes flight and not while taking off or landing.FuselageThe fuselage is also a part of the wing.It is designed to carry two pilots and a payload.The fuselage can be modified to carry heavy artillery or few people during rescue missions.The fuselage is made heavier at the bottom such that the rotors are aligned symmetrically about the centre of mass of the aircraft.Working of the Vertigo V-5Operations Liftoff.Take off.Flight.Hovering. Landing.Liftoff The rotors start spinning at the required rpm.This gives the upward thrusting force which provides the lift.calculations for speed of rotors for lift off : Mass of the aircraft = 9 tons = 9000kg. Blade radius = 1.5m Blade solidity factor = 1 Absolute density of air = 1.225 kg/m3Thrust co efficient c = 0.01

The expression for the thrust of the rotor (lift off force) TL = ct Ab (R)2/From this , 2 = tL / CT AB R2 = (4800x9.81)/(0.01)(1.225)(x1.52)(1.52) = 476 rad/sConverting rad/s to rpm, N = 4545 rpmThis is the speed required to lift the aircraft.

TakeoffThe take off in the Vertigo V-5 is performed on an air runway.The following calculations show that the lift force provided by the calculated velocity is equal to the weight of the airplane. S = 262.228 m2 (calculated as per design subtracting the rotor area) CL = 1.05

To calculate the velocity to maintain the altitude take the worst case scenario, lift force = weight force The exposed pat of the wing will be closed after the desired lift is achieved. V2 = 2L/SCL = 2x9000x9.81/1.225x62.288x1.05 V = 169 km/h A is taken as chord length2, for the minimum velocity of lift we found previously. The drag force is Fd = v2CDA = 0.5x1.225x1692x0.04x47.61 = 33,314 N

FlightAfter the desired lift is achieved the rotors are closed.Forward motion can be achieved only when the thruster is engaged.The thrust produced by the engines should overcome the drag force acting on the airplane.

The following calculations show the drag force experienced by the aircraft at takeoff velocity.Calculation for forward thrust and drag forces drag force Fd = v2CDA We know values of = 1.225kg/m3 CD for streamline shape = 0.04 Reference area, A = 47.61m2 = 0.5x1.225x1692x0.04x47.61 = 33,314 N

Hovering and Landing The planes velocity can be brought to zero by either switching off the thruster or by applying reverse thrust.During this time the rotors are again engaged to maintain the desired altitude.Now the altitude can reduced slowly using the rotors and the plane can be landed, again without a runway.Advantages of the Vertigo V-5

The number of crashes can be reduced drastically.Incredible altitude control.The Vertigo V-5 does not need a runway to take off.Fuel consumption during takeoff and landing is brought down considerably.The V-5 can land and takeoff from any landscape.It can function both as a helicopter and an airplane.The V-5 is extremely aerodynamic, making it very efficient.

Impact of the Vertigo V-5

The V-5 can replace the contemporary fighter jets as it is more crash resistant and promises to deliver better performances.If extended to passenger flights, the very precise and easy altitude control could help in moderating air traffic efficiently.