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the frontiers of flight have been

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highly experimental designs for the

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plains of the world

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this plane is the latest of the x-series

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an aircraft called the x-29 at first

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glance the prime seems ordinary until

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bring back

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through the use of the x-29 is a test

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vehicle engineers will be able to

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explore the forward swept wings unique

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mixture of speed agility and slow flying

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qualities they will also explore the

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interaction of the wings with the

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forward canards and rear straight flaps

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in this design all control surfaces are

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linked together by computer

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Walter sepak NASA's program manager for

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the x-29 all three of these surfaces are

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tied into a digital computer and their

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deflection or movement during flight is

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optimized by the flight control

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computers when the pilot makes a stick

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input to the airplane these three

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surfaces all right react simultaneously

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to give the optimal response of the

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airplane to minimize drag and maximize

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performance the forward swept wing

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concept was first explored during World

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War two when the Germans built a test

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bomber with 15 degree forward swept

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wings the bomber had a limitation which

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is inherent to all forward swept wings

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it is called structural divergence and

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is illustrated here as soon as higher

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speeds are realized the wingtips

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experience tremendous

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twisting loads which flex the wings and

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can literally tear them off the x-29

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swing is criss-crossed with 750

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composite tapes of such material as

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carbon Kevlar and glass the materials

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are woven in a way to counteract the

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twisting forces encountered by the wing

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is to prove the benefits of the

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forward-swept wing to confirm the x-29

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and when these goals are accomplished to

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make sure the results are transferred to

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government and industry what we learned

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this program will help build the next

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generation of fighter and commercial