Here is the text, if it helps:

The glider pilot launch ribbon (England. Looping) in level flight at a speed of 60

m / s. Maneuver carried out so that the moment you pull the stick to set as back and then stick

throughout the maneuver, retained in the same position. The initial centripetal acceleration maneuver at 30 m / s2

and in the direction of

vertically upwards.

Calculate the position, velocity and acceleration of the aircraft as a function of time during the interval from the beginning

implementation of acrobatics to the time in which the aircraft at a constant acceleration outlining full circle. or

this time the aircraft comes back to the original course of the year? The origin placed at the point at which

moves from the horizontal plane of the ribbon.

In addition to the specified data using the following assumptions:

acceleration due to gravity is 9.8 m / s2

air resistance can be neglected, so that the only force acting on the plane, the force of gravity

and lift force, which is perpendicular to the direction of the current speed of the airplane

lift force is proportional to the square of the speed of the airplane

the maneuver the airplane is rotated about its horizontal or vertical axis

surrounding air is stationary relative to Earth

Some explanations about the task:

Mechanics of Flight is fairly complicated, but it can be for a basic understanding

simplified to a few basic concepts. On the airplane operating force of gravity and the aerodynamic force

as a result of the movement of aircraft in the ambient air. The aerodynamic forces contribute mainly skirts

and the fuselage and control surfaces. Due to the hull and krill operates on a plane drag force, which is due to lower

losses are trying to minimize the aerodynamic shape of the aircraft. The wings give the aircraft buoyancy, with

which in the normal regime in particular, balance the gravitational force. Buoyancy depends mainly on the

the speed of the airplane with respect to the surrounding air, and the shape of the profile and the angle of attack (the angle between the center line of the

profile and the relative circumferential velocity of air in relation to the plane). By tilting controls to create

Having these areas additional buoyancy, which make war distance from the center of gravity of the aircraft creates a torque which causes

rotation letla in different axes. Deflection flaps (on the outer strain wings) causes rotation about a horizontal

axis deviation rudder (vertical control surfaces on the tail) vrtnje about a vertical axis and

deviation elevator (horizontal control surfaces on the tail) deviation around the transverse axis.

When the airplane is not inclined to dismantle the resultant aerodynamic forces on the aerodynamic drag, which

operates in the opposite direction from the direction of flight, and the buoyancy, which acts in the perpendicular direction with respect to the speed of

aircraft, which coincides with the direction of the vertical axis. At speeds of the tasks of the air resistance is certainly

noteworthy, however, are modern gliders so well designed that the sliding relationship

1:45 and more.

In level flight the lift force acting in the vertical direction and exactly balances the gravitational force. when

pilot tilts the elevator back to the airplane to rotate around a transverse axis, causing an increase in

the incident as air in relation to the wings of the airplane and therefore increase buoyancy. Excess buoyancy causes Numerical methods in physics - a selection of finished tasks

4

cenripetalni acceleration and the plane starts to move around in an arc. from the initial

centripetal acceleration reduced by the gravitational acceleration and velocity can be calculated from

proportionality coefficient between the lift force and the square of the speed of the aircraft, which was

assumed to be a constant.

Due to the centripetal acceleration starts to rise and the airplane due to the force of gravity to lose speed

(because the weight is no longer working at right angles to the direction of velocity). Due to the reduced speed decreases

buoyancy (as it is proportional to the square of the speed), which affects the smaller centripetal acceleration. If the

speed does not decrease, to the movement of the arc upward centripetal acceleration grow as

the force of gravity is no longer directed opposite to the force of buoyancy.

The situations described are valid until the aircraft reaches the upper point of tangles, then the situation

turn.

Useful links:

http://en.wikipedia.org/wiki/File:Loop1.gif http://en.wikipedia.org/wiki/Circular_motion http://en.wikipedia.org/wiki/Flight_dynamics
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Can this be calculated?

Damn, I'm such a dummy when it comes to physics