Aircraft Engine Leakage Air Heating for Fan Blades and Intake Cone De-Icing
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Solution Overview
Problem
Aircraft engines face the challenge of ice formation on external components such as fan blades and intake cones due to low temperatures, which can lead to damage if not properly addressed.
Innovation Solution
The engine design incorporates a sealing device with a leakage air stream that utilizes the warmer air from the blocking air space to heat the intake cone and fan blades without an external energy source, using outflow means in the connecting arms and shaft connections to direct the warm air to these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If de-icing measures are used to prevent ice formation on fan blades and intake cone, then reliability is improved, but use of energy increases
Solution Approach 1:
The system uses the engine's own operating air stream to heat and prevent ice formation on external components. The air stream, which is already present in the engine for operational purposes, is directed through channels to contact the fan blades and intake cone, eliminating the need for separate heating systems or external energy sources.
Solution Approach 2:
The patent converts the typically harmful cold air stream that causes icing into a beneficial heating medium. By utilizing the temperature difference between the cooler external air and the warmer internal engine air, the system prevents ice formation while actually using the cold air flow path to deliver warmth to vulnerable components.
2Reliability
If heating devices are added to prevent ice formation, then reliability is improved, but device complexity increases
Solution Approach 1:
The air stream channels serve multiple functions: they are part of the engine's structural design, provide thermal management, and deliver de-icing heat to multiple components (fan blades and intake cone) simultaneously. This multi-functionality avoids the need for separate dedicated heating systems for each component.
Solution Approach 2:
The patent merges the de-icing function with the existing engine air flow system. Instead of adding separate heating devices, the design integrates thermal management into the structural air channels that already exist in the engine, combining structural support, fluid flow, and thermal transfer functions into a unified system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Efficient heating of the intake cone and fan blades is achieved, preventing ice formation by maintaining temperatures above the freezing point, ensuring reliable engine operation without additional energy consumption.
Implementation Method 1
a leakage air stream flows out of the blocking air space via the sealing device... this air stream may be used to heat these components
Data Source
AI summary
The invention concerns an aircraft engine with an intake cone and a fan stage coupled thereto with a plurality of fan blades, wherein the fan blades are each connected to a drive shaft via a connecting means, whereina sealing device for blocking air is arranged between a blocking air space and the interior of the intake cone, and during operation of the aircraft engine a leakage air stream flows out of the blocking air space via the sealing device, characterized by at least one outflow means for the leakage air stream in a component of the aircraft engine to allow a flow of the leakage air stream into the interior of the intake cone.