All-moving tail (stabilator) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/all-moving-stabilator/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- A stabilator is a one-piece horizontal tail that pivots about a central hinge; it is very sensitive to control input (FAA PHAK ch.6).
- An antiservo tab on its trailing edge moves in the same direction as the stabilator, increasing stick force to prevent over-control, and a balance weight is usually placed ahead of the main spar (PHAK ch.6).
- RC sailplanes use the same idea: Drela's Bubble Dancer has a 'horizontal all moving tail' on a V-mount (CRRC).
- Used on: Bubble Dancer (RC sailplane).
- The file is a reference example built by Xem Studio from the numbers above. Sizes the sources do not fix are illustrative; scale the example to your own vehicle.

parameter  value or range  source
Antiservo tab direction  same direction as stabilator  FAA PHAK ch.6
Mass balance  weight ahead of main spar  FAA PHAK ch.6
Bubble Dancer tail airfoil  ht21 (horizontal and vertical)  CRRC
Reference build  Sh 40,000 mm^2 pivoting surface  computed

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- FAA: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Ch. 6 Flight Controls — web — Publisher's page; dimensions are facts — https://www.faa.gov/sites/faa.gov/files/08_phak_ch6.pdf
- Charles River Radio Controllers (M. Drela designs): Bubble Dancer 3m RES sailplane — web — Publisher's page; dimensions are facts — https://charlesriverrc.org/articles/on-line-plans/mark-drela-designs/bubble-dancer/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/all-moving-stabilator/index.json
API: https://xemstudio.com/api/geometry?object=all-moving-stabilator