Reverse delta (Lippisch) wing — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/reverse-delta-wing/  (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 reverse delta's chord decreases linearly from root to tip with the point leading, the planform Lippisch used for ground-effect craft because it limits centre-of-pressure shift with height (Rozhdestvensky).
- Compared with a regular delta it has lower CL and CD, a delayed stall and higher L/D, with CLmax 1.175 at 38 deg vs 1.26 at 34 deg for the delta (Frontiers 2022 review).
- Lippisch craft combined it with moderate AR above 3, anhedral and a large high-mounted tailplane (Rozhdestvensky).
- Used on: Lippisch X-113, Lippisch X-114.
- 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
Reverse delta CLmax / stall  1.175 at 38 deg  Frontiers 2022 review
Regular delta CLmax / stall  1.26 at 34 deg  Frontiers 2022 review
Lippisch AR  moderate, above 3  Rozhdestvensky 2006
Reference build  span 700, root 400 (AR 3.5)  computed

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Progress in Aerospace Sciences (K.V. Rozhdestvensky, 2006): Wing-in-ground effect vehicles (review) — web — Publisher's page; dimensions are facts — https://www.hassanhameed.com/wp-content/uploads/2016/01/wingingroundeffectvehicles-130120003005-phpapp01.pdf
- Frontiers in Aerospace Engineering (2022): Review of ground-effect experiments on rectangular, reverse-delta and delta wings — web — Publisher's page; dimensions are facts — https://www.frontiersin.org/journals/aerospace-engineering/articles/10.3389/fpace.2022.975158/pdf

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