By Topic

The X-29: Is it coming or going? The `wing's the thing¿ in this advanced experimental aircraft; forward-swept for maneuverability, it makes the plane unflyable without the aid of computers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)

The X-29 is an experimental aircraft built by the Grumman Aerospace Corp. for the US Defense Research Projects Agency. Relaxed static stability, one of the aircraft's key design features, means that the pilot must depend exclusively on computers to fly the plane. The X-29's computers monitor and adjust the positions of the plane's control surfaces every 25 milliseconds to follow the pilot's directions. Because it is designed to be unstable, the X-29 has its center of lift ahead of the center of gravity rather than behind it, unlike most stable aircraft. The way that the aircraft's canards and flaperons contribute to maneuverability is explained, and an account is given of how a computer-aided design and manufacturing system was used to design the composite wing. The aircraft has three digital computers backed up by three analog computers. The three digital computers are linked to one another by data buses in a ring-like configuration.

Published in:

Spectrum, IEEE  (Volume:22 ,  Issue: 6 )