Nacelle inlet lip skin with pad-up defining a developable surface having parallel ruling lines

US9663238B2 · kind B2 · utility

Assignee

• The Boeing Company · US

Inventors

• Daniel J. Kane · Santa Fe, US
• Stuart W. Vogel · Long Beach, US
• Hoa V. Truong · Irvine, US
• Michael W. Kass · Seattle, US
• Andrew T. Gilmore · Mukilteo, US
• Paul Whitmore · Crewe, US
• Jack W. Mauldin · Mill Creek, US
• Alejandro Silva · Rancho Santa Margarita, US
• John Ybarra · Placentia, US

Key dates

• Filing date: Nov 11, 2013
• Grant date: May 30, 2017
• Expiry date: Apr 13, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/0536
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A nacelle inlet is provided for a turbo-fan engine for an aircraft. The nacelle inlet includes a lip skin having first and second pad-ups, an inner barrel including a forward flange and a bulkhead. The bulkhead, the lip skin and the inner barrel are attached together at mating surfaces. The bulkhead and the lip skin are attached together at mating surfaces. Each mating surface defines a surface geometry which approximates a developable surface having parallel ruling lines. The developable surfaces are formed by machining.