Hardwall fan case with structured bumper

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F01D 21/04 (2006.01)

Patent

CA 2358596

A hardwall fan case (1) for en-casing the radial periphery of a for-ward fan (2) in a gas turbine engine, including a rigid annular shell (14) with a rigid hardwall fore section (15) and coated with a fore layer (16) of abradable material. The fore sec-tion (15) serves as a hardwall to limit the radial movement of fan blades (5) deflecting under bird strike con-ditions thus maintaining the result-ing fan tip (9) clearance within ac-ceptable limits. There is a recess be-tween the aft section (17) of the rigid shell (14) and the air path surface (18), housing a compressible mate-rial (19) that absorbs the impact of the broken blade (5) fragment pro-pelled radially, and can retain the fragment in certain conditions.The rigid shell (14) includes a novel rigid bumper (21) between the fore and aft sections (15, 14) having a rigid rear edge (22) disposed an offset distance forwardly of the fan blade centres of gravity (6).

L'invention concerne un carter (1) de soufflante à paroi rigide destiné à renfermer le pourtour radial d'une soufflante avant (2) de turboréacteur. Ledit carter comprend une coque (14) annulaire rigide à section (15) avant à paroi rigide, recouverte d'une couche (16) avant de matériau abrasif. La section (15) avant sert de paroi rigide pour limiter le mouvement radial des pales (5) de la soufflante, qui fléchissent sous l'effet d'un impact d'oiseau, ce qui permet de maintenir l'espace obtenu au niveau de la pointe (9) de la soufflante dans des limites acceptables. Un évidement est ménagé entre la section arrière de la coque rigide (14) et la surface (18) de la voie d'air, ledit évidement renfermant un matériau (19) compressible capable d'absorber l'impact d'un fragment de pale (5) cassé propulsé radialement, et pouvant retenir ledit fragment dans certaines conditions. La coque rigide (14) comprend un nouvel amortisseur (21) de choc rigide disposé entre les sections avant et arrière (15, 14), lequel amortisseur de choc comporte un bord (22) arrière rigide décalé vers l'avant par rapport aux centres de gravité (6) de la pale de la soufflante.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Hardwall fan case with structured bumper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hardwall fan case with structured bumper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hardwall fan case with structured bumper will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2037392

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.