Doak VZ-4 Tilt-Duct V/STOL Research Aircraft Family
The Doak VZ-4 was a single-engine tilt-duct V/STOL research aircraft that first flew in February 1958. A Lycoming YT53 turboshaft cross-shafted to tilting wingtip ducts drove the ducted fans; flight testing exposed low control power, ground-effect sensitivity, duct side forces, and restricted transition corridors while demonstrating the feasibility and limits of the tilt-duct concept.
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Identity
- Aliases
- Doak VZ-4VZ-4Doak Ducted FanVZ-4A
- Family Name
- Doak VZ-4 Ducted Fan
- Full Name
- Doak VZ-4 Tilt-Duct V/STOL Research Aircraft Family
- Roles
- militaryresearchexperimentaltechnology_demonstrator
- Status
- retired
- Type
- aircraft
Details
- Aircraft Specs
- Configuration
- powered_lift
- Operating Modes
- land
- Takeoff Landing Capabilities
- vtol
- Description
- The Doak VZ-4 was a single-engine tilt-duct V/STOL research aircraft that first flew in February 1958. A Lycoming YT53 turboshaft cross-shafted to tilting wingtip ducts drove the ducted fans; flight testing exposed low control power, ground-effect sensitivity, duct side forces, and restricted transition corridors while demonstrating the feasibility and limits of the tilt-duct concept.
- First Flight Year
- 1,958
Links
Assets & Meta
- Creation Time
- August 15, 2026 at 04:00:30 UTC
- Updated Time
- August 15, 2026 at 04:00:30 UTC