I'm not sure is UAS' are the same as the RAF's, but this is what RAF aptitude testing involves:
1) Control of Velocity test (CVT)
Use a joystick left and right to hit the targets. The targets are small circles cascading down the screen but theres a delay between what you do, and the dot actually moving.
2) Instrument Comprehension (INSC)
A measure of general and spatial awareness using basic aircraft instrumentation (alt, art horiz, vertical speed, air speed, compass aswell as turn and bank). First part uses just the artificial horizon and compass to identify the correct orientation of an aircraft from a set of pictures, the second part uses all 6 instruments and given a number of verbal descriptions of orientation. You then have determine which description matches what you have on screen.
3) Sensory Motor Apparatus (SMA)
This is basically a tracking task. Using a joystick and pedals to move a dot both horizontally (pedals) and vertically (joystick), keep the dot as close to the target as possible. The dot is moved away forcing you to compensate.
4) Digit Recall
Short term memory test where you are presented with sets of numbers of varying length on screen, each being shown for about 10 secs. As soon as it disappears you have to type the number in.
5) Vigilance (VIG)
You are presented with a 9x9 matrix on screen. Each cell in the matrix is identified by numbers along the top and left hand side. You then are asked to do 2 tasks; 1 routine and the other priority. The routine tasks involves entering the cell number when a star appears in it, the priority task involves doing the same when an arrow appears. This has to be cancelled first by pressing a key then entering the cell number.
Scores are based on accuracy and speed... obviously
Good luck.