Ramills: Products

At left, a cad drawing of the nose gear door sequencing system is illustrated. The dark grey cam to the left is attatched to the cross shaft of the drag brace. As the gear is retracted, the cam rotates. A sealed roller bearing runs along the cam's profile. The bearing is attached to an arm which is attatched to a stainless steel cross shaft. Two lift arms are attached to the shaft, closing and opening the doors.

The stainless steel cross shaft is seen at the top of the photo. The long red lift arm is attached to the shaft at one end. At the other end, a rod end bearing and stainless steel threaded rod is attached to a bracket mounted to the nose gear door.

The cam mounted to the upper drag brace.

At the beginning of the cycle, the nose gear is retracted into the nose...

As soon as the gear begins to extend, the doors open...

The doors have opened far enough to allow the nose gear to pass...

With the nose gear out of the way, the doors will begin to close...

The doors are closing...

The nose gear is locked in the down position and the doors are closed.

While flying, the open doors can adversely affect handling characteristics. So, the sequencing system is an important feature for the VK-30.