 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (June 2010) |
| X-18 | |
|---|---|
 Ground testing the X-18 tiltwing | |
| General information | |
| Type | Experimental prototype |
| Manufacturer | Hiller Aircraft |
| Designer | |
| Status | Aircraft scrapped 1964 |
| Number built | 1 |
| History | |
| First flight | 24 November 1959 |
| Developed from | Chase YC-122 Avitruc |
The Hiller X-18 was an experimental cargo transport aircraft designed to be the first testbed for tiltwing and V/STOL (vertical/short takeoff and landing) technology.