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Bell X-22A Quad-Tilt-Duct VTOL Research Aircraft Family

The Bell X-22A was a U.S. Navy-sponsored VTOL research aircraft with four tilting ducted propellers arranged in tandem pairs. The ducts rotated from vertical lift to forward flight, while variable-stability instrumentation let researchers study hover, transition and control of future V/STOL transports. Two aircraft were built, and the surviving research lineage remained useful long after the first prototype was lost.

Bell X-22A Quad-Tilt-Duct VTOL Research Aircraft Family
U.S. Army photograph via Wikimedia Commons · Public domain: U.S. Army official-duty photograph; U.S. federal government work in the United States. No known copyright restrictions in the United States; NASA/Bell insignia are not asserted as endorsements. · Source
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Identity

Aliases
Bell X-22X-22ABell Model D2127Quad Tilt-Duct
Family Name
Bell X-22A
Full Name
Bell X-22A Quad-Tilt-Duct VTOL Research Aircraft Family
Roles
militaryexperimentalresearchtechnology_demonstrator
Status
retired
Type
aircraft

Details

Aircraft Specs
Configuration
powered_lift
Operating Modes
land
Takeoff Landing Capabilities
vtol
Description
The Bell X-22A was a U.S. Navy-sponsored VTOL research aircraft with four tilting ducted propellers arranged in tandem pairs. The ducts rotated from vertical lift to forward flight, while variable-stability instrumentation let researchers study hover, transition and control of future V/STOL transports. Two aircraft were built, and the surviving research lineage remained useful long after the first prototype was lost.
First Flight Year
1,966

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Assets & Meta

Creation Time
August 7, 2026 at 22:09:17 UTC
Updated Time
August 22, 2026 at 11:54:58 UTC