RE: mechanism for making a retractable tailhook on Hellcat?
One thing that just occurred to me is the method I used to deploy the tailhook and it not going to the full 90 degree down position from the fuselage. I was concerned that rapid move of the knob on the transmitter might mess something up on the tailhook deployment. I have found that rapidly moving the knob to the full down position for the tailhook makes it snap onto the magnet that is glued on the bottom of the fuse almost instantaneously, and the whole unit seems to be well designed without any damage while doing this.
Next test flight I am going to move the knob rapidly to the down position, in the hopes that the tailhook will grab onto the magnet before the airloads can push it back in the airstream, and away from the magnet so it can't hook onto it.
I also added another rare earth magnet below the first one, this a 1/8" diameter and about 1/2" long that is glued below the first magnet, and into the fuse. The two magnets together really grab onto the tailhook, I just don't know yet whether it will be enough pull to offset the airloads.
More later.
davegee