T-tail experiment V2

[Wrench Monkey]

After an extremely successful proof of concept with v1 it was time to make improvements based on the initial design's shortcomings. Version two features a shorter tail section and longer nose for ease of balancing (V1 required alot of nose weight). A greatly reenforced empennage featuring a folded v stab with popsicle sticks for spars that pass through the fuselage for extra strength. I also wanted to redesign the h stab to be as small and efficient as possible to save weight at the tail. I added some vortex generators to hopefully increase the effectiveness of the rather small elevator. Finally the overall fuselage is built to be as light as possible in hopes to increase the already impressive flight times I was getting. V2 is using the same wing as V1 as it seems to be a pretty efficient design.
If anyone has tried anything similar I would love to see your designs! I'm always looking for inspiration!

 

[quorneng]

Remember it is the tail volume (area x distance from the wing) that controls stability. It is quite possible that too small a volume will make it difficult to fly accurately requiring more power and more control surface correction which will eat into any drag reduction benefit.
My own solution for 'tail efficiency' with a pusher is a glass fibre rod boom and an elevator only V tail.

It keeps the whole tail assembly out of the high speed prop wash.
With a 3000 mAh 3s it can cruise gently with the power on for about 45 minutes without risk of running the battery below 'storage' level.

 

[Wrench Monkey]

Remember it is the tail volume (area x distance from the wing) that controls stability. It is quite possible that too small a volume will make it difficult to fly accurately requiring more power and more control surface correction which will eat into any drag reduction benefit.
My own solution for 'tail efficiency' with a pusher is a glass fibre rod boom and an elevator only V tail.

View attachment 177996
It keeps the whole tail assembly out of the high speed prop wash.
With a 3000 mAh 3s it can cruise gently with the power on for about 45 minutes without risk of running the battery below 'storage' level.

Thanks for the tip! Good to know there's a formula for it!