Don't be panic! just throttle up and use your stick to take off and you will find you can drive this aircraft backward as normal......
This is an updated version of my last model
NASA-Rumor-Pigpen
Also, this can be seen as a successor of my model Can you fly backward or You are cleared to fly any way 01
but one furthermore step:
by default, this pigpen is flying backward, and you can deactivate button 8 and activate button 7 to change to normal forward motion, don't forget to change the view to camera 1 to look forward.
but both the forward and backward mode is not easy to control as the original pigpen, the flight quality drops a lot, especially the backward mode, because I use the gyroscope in the body, so, it can't roll over 180 degrees.
I have tried to change the mode in flying, it's challenging! interesting! enjoy yourself!
youtube video here:
PigPen fly backward and forward