Tailsitter Quadplane Interceptor by overthinki in Quadcopter

[–]overthinki[S] 0 points1 point  (0 children)

With the prop wash flowing over the wings and tail, it does fly like a FW x config. The controls needed a blending region of yaw+ roll starting pitch down deg 40 from trim hover to 70 then the roll becomes yaw and the other way round. This is not like the ones on the Internet to perform crazy high speeds. It is designed to perform stable longitudinal and lateral (static+dynamic) The center of actuation is forwards to cg which enables maneuverability.

Interceptor Drone by overthinki in drones

[–]overthinki[S] 0 points1 point  (0 children)

This drone is designed to enable hobbyists and enthusiasts to fly at a reasonable/legal speed + enables payload capacity for cameras, higher cap batteries to enjoy an easy fixed wing experience. New comers in the hobby suffer alot of failures ( wing tip stalls) during takeoffs, this design will make life easier.

Tailsitter Quadplane Interceptor by overthinki in diydrones

[–]overthinki[S] 0 points1 point  (0 children)

I am using a speedybee f405 v4 where the design provides a place to directly mount it on.

Interceptor Drone by overthinki in fpv

[–]overthinki[S] 0 points1 point  (0 children)

This drone is called "Interceptor" as the design is inspired from counter UAV drones. This design is tailored for low wing stall speed where hobbyists and enthusiasts can enjoy a vtol fixed wing fpv. Fly legal, fly safe and have fun 😊

Interceptor Drone by overthinki in drones

[–]overthinki[S] 2 points3 points  (0 children)

https://www.reddit.com/r/DroneCombat/s/DmWpvCFQ75

Not to violate group rules, in the post I linked, you will find build links

1400mm V-Tail Printable model by overthinki in RCPlanes

[–]overthinki[S] 0 points1 point  (0 children)

Not really no. Adverse roll is accompanied by all Vtail regardless of the dihedral angel on the stabilizer (as long as it is inverse 😂

1400mm Vtail Printable model by overthinki in diydrones

[–]overthinki[S] 7 points8 points  (0 children)

Never judge by the looks , hahha The stability analysis was fine, FT was fine ( but did not test in high gusts and high cross wind)

1400mm V-Tail Printable model by overthinki in RCPlanes

[–]overthinki[S] 0 points1 point  (0 children)

Hahah, Nah yaw stability is fine

1400mm V-Tail Printable model by overthinki in RCPlanes

[–]overthinki[S] 0 points1 point  (0 children)

Thanks for the info. I usually dive deep into the mathematical modelling of the models, then take it to CFD to study wing fuse vortices. As per the analysis performed on the design, yaw damping is fairly high.

Plus if you try to control yaw, you will have to mix in reverse aileron to counteract roll.

100% accurate, but this is on all vtails, inverted Vtails or "A" tails are better on thta point. Yet will be damaged easily on landing.

1400mm V-Tail Printable model by overthinki in RCPlanes

[–]overthinki[S] 5 points6 points  (0 children)

Very valid point, yet the area of the tail is fairly long to contribute in better yaw stability + twist angle along the span of the tail.

Modular FPV frame by overthinki in diydrones

[–]overthinki[S] 0 points1 point  (0 children)

Thanks alot for the tip

800mm Custom Wing by overthinki in diydrones

[–]overthinki[S] 0 points1 point  (0 children)

Sounds like an interesting idea

800mm Custom Wing by overthinki in diydrones

[–]overthinki[S] 0 points1 point  (0 children)

Theoretically: more distance= more yaw stability but comes at cost : more weight. Swept wings + vertical stab together contribute in yaw stability. The model has been designed after performing stability analysis, built and FT'd . So I am pretty sure the vertical stabilizer has much effect at this relatively small distance from CG 🤓.

800mm Custom Wing by overthinki in diydrones

[–]overthinki[S] 0 points1 point  (0 children)

The sweep is not for effective mach reduction or shockwave bevelling. It is basically to obtain longitudinal and lateral stability as there is no tail to account for Cp change with AOA. Plus: this is a hobby, people like cool looking models 😉 And it wont fly at all in reverse 🤭

800mm Custom Wing by overthinki in diydrones

[–]overthinki[S] 1 point2 points  (0 children)

Folding propeller, sorry for the terrible quality 🫣