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    • 22. 发明授权
    • Encrypting communications between wireless mobile units
    • 加密无线移动单元之间的通信
    • US06792112B1
    • 2004-09-14
    • US09528236
    • 2000-03-17
    • Lowell CampbellDaniel Robertson
    • Lowell CampbellDaniel Robertson
    • H04N7167
    • H04W12/02H04K1/00H04W88/02
    • A wireless mobile unit includes a voice encoder circuit that receives an analog voice signal and creates digital voice data representing a user's voice. The mobile unit receives an encryption key entered by the user, typically on the keypad or through a voice recognition circuit, and stores the encryption key in a storage device. An encryption circuit encrypts the digital voice data using the encryption key. A transmitter then modulates the encrypted voice data onto an RF signal and transmits the RF signal to a base station in a wireless network. The base station uses the same encryption key to decrypt the signal before transmitting it to another base station or mobile unit. Signals transmitted from the base station to the mobile unit are encrypted and decrypted using a user-selected encryption key in a similar manner.
    • 无线移动单元包括接收模拟语音信号并创建表示用户语音的数字语音数据的语音编码器电路。 移动单元接收用户输入的加密密钥,通常在键盘上或通过语音识别电路,并将加密密钥存储在存储设备中。 加密电路使用加密密钥加密数字语音数据。 然后,发射机将加密的语音数据调制到RF信号上,并将RF信号发送到无线网络中的基站。 基站使用相同的加密密钥在将信号发送到另一个基站或移动单元之前解密该信号。 从基站向移动单元发送的信号以类似的方式使用用户选择的加密密钥进行加密和解密。
    • 23. 发明申请
    • Re-pressurisation device
    • 再加压装置
    • US20090133408A1
    • 2009-05-28
    • US12081655
    • 2008-04-18
    • Daniel Robertson
    • Daniel Robertson
    • F02C9/18
    • F04D25/04F02K3/068F04D19/022
    • A gas turbine engine re-pressurisation device (36) for cooled cooling fluid, the re-pressurisation device (36) comprising a compressor stage (42) and a turbine stage (46), characterised in that a common mounting means (58) is provided between the compressor stage (42) and the turbine stage (46) such that one of the compressor stage (42) and the turbine stage (46) is located radially inwardly of the other, the re-pressurisation device (36) further comprising fluid flow directing means (44) to direct a first portion of the fluid (40) through the compressor stage (42) and a second portion (54) through the turbine stage (46).
    • 一种用于冷却冷却流体的燃气涡轮发动机再加压装置(36),所述再加压装置(36)包括压缩机级(42)和涡轮级(46),其特征在于,共同的安装装置(58) 设置在压缩机级(42)和涡轮级(46)之间,使得压缩机级(42)和涡轮级(46)中的一个位于另一级的径向内侧,再加压装置(36)还包括 流体引导装置(44)以引导流体(40)的第一部分通过压缩机级(42)和通过涡轮级(46)的第二部分(54)。
    • 24. 发明申请
    • Proprotor blade with leading edge slot
    • Proprotor刀片带前缘槽
    • US20060239824A1
    • 2006-10-26
    • US10543222
    • 2003-01-23
    • Daniel RobertsonDudley SmithCharles HollimonJimmy NarramoreB. Mullins
    • Daniel RobertsonDudley SmithCharles HollimonJimmy NarramoreB. Mullins
    • A23L3/18
    • B64C11/16B64C27/467B64C29/0033
    • A proprotor blade (27a, 27b, 127a, 127b) having a fixed, spanwise, leading edge slot (215) located in at least the inboard portion of the proprotor is disclosed. The slot (215) is formed by a selectively shaped slat (217) disposed in a selectively shaped recessed area (219) located at the leading edge (202) of the main portion of the proprotor blade. The slot (215) is selectively shaped so the a portion of the airflow over the lower airfoil surface of the proprotor blade is diverted between the main portion of the proprotor blade and the slat (217) and exits at the upper airfoil surface of the proprotor blade. The present invention may be used on both military-type tiltrotor aircraft (11) and civilian-type tiltrotor aircraft (111) with only minor variations to accommodate the different shapes of the proprotor blades.
    • 公开了一种具有固定的,翼展方向的前缘槽(215)的推进器叶片(27a,27b,127a,127b),其位于至少在推进器的内侧部分中。 狭槽215由位于驱动器叶片的主要部分的前缘(202)上的选择性形状的凹入区域(219)中的选择性地成形的板条(217)形成。 狭槽215被选择成形,使得在推进器叶片的下翼面表面上的气流的一部分在推进器叶片的主要部分和板条(217)之间转向并在推进器的上部翼型表面处离开 刀。 本发明可以用于军用型倾转旋翼飞机(11)和民用型倾转旋翼飞机(111),只有微小的变化来适应不同形状的推进器叶片。