公开(公告)号：US20050109039A1

公开(公告)日：2005-05-26

申请号：US10722977

申请日：2003-11-26

Applicant: Abdullatif Chehab ,  David Little

Inventor： Abdullatif Chehab ,  David Little

IPC: F01D11/24 ,  F02C7/00

CPC classification number: F01D11/24

Abstract: Aspects of the invention relate to a turbine engine system and method for actively managing blade tip clearances during part load operation of the engine. Aspects of the invention relate to extracting a portion of the combustion gases from the combustor section of the engine and routing these heated gases to the blade rings or other stationary structure surrounding the turbine blades. Upon exposure to the combustion gases, which can be mixed with compressor exit air, the stationary structure will thermally expand, causing blade tip clearances to increase. Thus, concerns of blade tip rubbing are minimized. Once the engines achieves steady state operation, the flow of the combustion gases to the blade rings can be substantially restricted so that only compressor exit air is supplied to the stationary structure. Consequently, the stationary structure will contract and the blade tip clearances will decrease, thereby increasing the efficiency of the turbine.

Abstract translation: 本发明的方面涉及一种用于在发动机的部分负载运行期间主动地管理叶片顶端间隙的涡轮发动机系统和方法。 本发明的方面涉及从发动机的燃烧器部分提取一部分燃烧气体并且将这些加热的气体引导到围绕涡轮机叶片的叶片环或其它静止结构。 当暴露于可与压缩机出口空气混合的燃烧气体时，固定结构将热膨胀，导致叶片尖端间隙增大。 因此，叶片尖端摩擦的问题被最小化。 一旦发动机达到稳态运行，燃烧气体到叶片环的流动可以被大体上限制，使得只有压缩机出口空气被供应到固定结构。 因此，固定结构将收缩并且叶片顶端间隙将减小，从而提高涡轮机的效率。

公开(公告)号：US06526904B2

公开(公告)日：2003-03-04

申请号：US09920254

申请日：2001-08-01

Applicant: Kelton Liston ,  Carol Olson ,  David Little

Inventor： Kelton Liston ,  Carol Olson ,  David Little

IPC: B63B700

CPC classification number: B63B7/082 ,  B63B1/121

Abstract: A pontoon comprising a seamless, non-woven, one-piece, inflatable vessel preferably formed by a process of rotational molding, from a resilient, semi-rigid polyolefin elastomer, preferably metalocene. The pontoon has shape memory characteristics, which make it partially self-inflating, and cause it to entrap air when partially deflated, to thereby resist complete deflation if punctured, allowing a user to more easily get to safety. Punctures in the pontoon may be easily eliminated by applying heat to the polymer material at the site of the puncture, such as with a hot knife or other metal implement, so as to fuse the polymer material together. The bottom of the pontoon is preferably thicker than the top, and the ends of the pontoon taper to a blunt point that is thicker still, to thereby resist damage from impact and to help maintain the desirable shape-memory characteristics of the pontoon. The pontoon is tolerant of significant relative pressure changes without substantial deformation or change in its shape.

公开(公告)号：US5790171A

公开(公告)日：1998-08-04

申请号：US575874

申请日：1995-12-22

Applicant: Frank Klopfer ,  Amos Lucas ,  David Little ,  Lisa M. Sprangel

Inventor： Frank Klopfer ,  Amos Lucas ,  David Little ,  Lisa M. Sprangel

IPC: H04L12/56 ,  H04N21/2381 ,  H04N21/242 ,  H04N21/438 ,  H04N21/643 ,  H04Q11/04 ,  H04N7/10

CPC classification number: H04N21/2381 ,  H04N21/242 ,  H04N21/4381 ,  H04N21/64307 ,  H04Q11/0478 ,  H04L2012/5616 ,  H04L2012/5664 ,  H04L2012/5674

Abstract: A digital communications system efficiently transports communications data in ATM format from a plurality of information providers to a plurality of users, maximizing transport of the supply of ATM streams to distribution paths in a network. A video tone dial network arrangement synchronizes the timing among various VIP source multiplexers and super trunk transmitters. ATM streams are transported through an ATM backbone network and a local loop distribution network. A serving node, or host digital terminal, of the local loop distribution network, supplies the bit stream carrying ATM cells for a video program to the user terminal and provides information necessary to permit the terminal to decode the data from the ATM cells carrying the program information.

Abstract translation: 数字通信系统有效地将ATM格式的通信数据从多个信息提供者传输到多个用户，从而最大限度地提高ATM流的供应到网络中的分发路径的传输。 视频音调拨号网络装置使各种VIP信号源复用器和超级中继发射机之间的定时同步。 ATM流通过ATM骨干网和本地环路分配网络传输。 本地环路分配网络的服务节点或主机数字终端向用户终端提供携带用于视频节目的ATM信元的比特流，并提供允许终端从携带该节目的ATM信元解码数据所必需的信息 信息。