In the diagram of a toy trailer below, when a child pulls on the handle, some of the 5 newton (N) force pulls the trailer upwards away from the ground and some of the force pulls it to the right.

One of these, bent at right angles (the longer arm being vertical), is connected with the pendulum, and transforms its vertical movements into horizontal ones.

For this, two primary approaches are being explored: horizontal and vertical landing. Horizontal landing, simply put, involves the use of aerodynamic wing structures to slow the rocket stage as it ...