System and method for adjusting control surfaces for wind tunnel models

A method for adjusting and locking a control surface that is movably arranged on a wind-tunnel aircraft model, the method comprising:

• driving a first drive motor, arranged in a fixed manner relative to the control surface, which drive motor is eccentrically connected to at least one first connecting rod which moves one end of a lever, the other end of which lever is held at a fixed point of the aircraft model;
• determining the control surface angle;
• and
• when a predetermined desired angle has been reached, stopping the first drive motor, driving a second drive motor that makes a deflection movement of the body with a toothed surface on a block with a corresponding toothed surface and in this process establishes a positive lock by meshing the body with the block, and stopping the second drive motor wherein the control surface, the first connecting rod, the lever and a fixed point of the aircraft model form a four-link chain.

A wind-tunnel aircraft model comprising a system for adjusting and locking a control surface that is movably arranged on a wind-tunnel aircraft model, the system comprising:

• a drive arrangement for driving the control surface, and a locking arrangement,
• wherein the drive arrangement comprises a first drive motor arrangeable in a fixed manner relative to the control surface, at least one first connecting rod eccentrically connectable to the first drive motor, and at least one lever with one end that can be held on the first connecting rod and another end that can be held on a fixed point of the aircraft model in a pivotable manner;
• and
• wherein the locking arrangement is attachable in a fixed manner relative to the control surface and is adapted to block a relative movement between the control surface and the aircraft model wherein the control surface, the first connecting rod, the lever and a fixed point of the aircraft model form a four-link chain.

An aircraft comprising a system for adjusting and locking a control surface that is movably arranged on a wind-tunnel aircraft model, the system comprising:

• a drive arrangement for driving the control surface, and a locking arrangement,
• wherein the drive arrangement comprises a first drive motor arrangeable in a fixed manner relative to the control surface, at least one first connecting rod eccentrically connectable to the first drive motor, and at least one lever with one end that can be held on the first connecting rod and another end that can be held on a fixed point of the aircraft model in a pivotable manner;
• and
• wherein the locking arrangement is attachable in a fixed manner relative to the control surface and is adapted to block a relative movement between the control surface and the aircraft model wherein the control surface, the first connecting rod, the lever and a fixed point of the aircraft model form a four-link chain.