# RFB X-114 aerofoil boat (Lippisch, 1977)

> What are the dimensions of the RFB X-114?

- Category: Ground-effect craft › Lippisch reverse-delta craft
- Kind: Modern device
- Basis: Secondary source: Wikipedia, 1000aircraftphotos.com (Friendship Bulletin 1977), The Maldives National Journal of Research (H. Hameed, 2019) (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/rfb-x-114/ · JSON: https://xemstudio.com/api/geometry?object=rfb-x-114 · Plain text: https://xemstudio.com/objects/rfb-x-114/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 12800 | 7000 | 2900 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- The X-114 was RFB's six-seat reverse-delta aerofoil boat, evaluated by the West German military; one was built.
- The file is a 12.80 × 7.00 × 2.90 m box (Wikipedia, Jane's). Another table gives an 8.77 m span, so span differs by source (the 7 m figure also appears in a 1977 RFB bulletin).
- Marked secondary.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Length | 12.80 m (42 ft 0 in) |
| Wingspan | 7.00 m (23 ft 0 in) |
| Height | 2.90 m (9 ft 6 in) |
| Alternative table (Hameed 2019, after Yun et al.) | 12.83 m × 8.77 m span × 2.92 m |
| Empty weight | 1,000 kg |
| Maximum take-off weight | 1,500 kg |
| Engine | 1 × Lycoming IO-360 flat-four, 150 kW (200 hp) |
| Propeller | 5-blade ducted pusher |
| Cruise speed in ground effect | 150 km/h |
| Range | about 2,000 km in ground effect |
| Endurance | 20 h |
| Capacity | 1 crew + 5–6 passengers |
| First flight | April 1977 |

## Where the files are

- Wikipedia: [RFB X-114](https://en.wikipedia.org/wiki/RFB_X-114) — web — Publisher's page; dimensions are facts
- 1000aircraftphotos.com (Friendship Bulletin 1977): [The Airfoilboat Story](https://1000aircraftphotos.com/Contributions/Visschedijk/10307.htm) — web — Publisher's page; dimensions are facts
- The Maldives National Journal of Research (H. Hameed, 2019): [The design of a four-seat reverse delta WIG craft, Table 1](https://mnjr.mnu.edu.mv/journal/article/download/97/66) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/rfb-x-114/index.json

- rfb-x-114-envelope: [STEP](https://xemstudio.com/files/hardware/rfb-x-114/rfb-x-114-envelope.step) · [STL](https://xemstudio.com/files/hardware/rfb-x-114/rfb-x-114-envelope.stl) — Envelope 12800 × 7000 × 2900 mm (Real craft: overall length × wingspan × overall height as published)

## Questions

**What is the X-114's wingspan?**

7.00 m per Wikipedia/Jane's and the RFB bulletin; one later table lists 8.77 m.

## Fits with

- [Collins X-112 aerofoil boat (Lippisch, 1963)](https://xemstudio.com/objects/collins-x-112-aerofoil-boat/)
- [RFB X-113 Am aerofoil boat (Lippisch, 1970)](https://xemstudio.com/objects/rfb-x-113-am/)