"forward trajectory" is correct and can be used in written English.
Example sentence: The company is well placed to maintain its current forward trajectory and build further success.
Good governments can fall if they lose progressive, forward trajectory.
Long, powerful hind limbs propel the fused head and trunk in a forward trajectory.
Erdem, U. M. & Hasselmo, M. A goal‐directed spatial navigation model using forward trajectory planning based on grid cells.
Now that the past could be recorded and accessed at will, it became much easier to understand that some sort of forward trajectory was possible.
As fashion designers unveil their spring 2018 collections over the next few weeks, it will be an opportunity to see whether fashion's forward trajectory continues or stalls.
I think the trajectory looks really exciting here, and I'm delighted to be able to play a role and participate in the planning and execution of that forward trajectory.
They habitually speak in terms of "forward trajectories", "shifting the axis" or being "ahead of the curve".
Forward trajectories of all sea ice formed on Siberian Shelf seas during the 1992 2017 period are shown in Fig. S2b).
In control, in most cases only forward trajectories are needed.
Figure 9a shows the forward trajectories from the fire site on March 17 at 16:00 (LT) to March 18 at 13:00.
a The forward trajectories from Ootaki (forest fire area), which are calculated from March 17 at 16:00 (LT) to March 18 at 13:00 (LT).
