DE202013005040U1 - The guard bar grille provides protection for aircraft with jet engine and additional safety for air traffic - Google Patents

Abstract

Protective bar grille for jet engine, characterized in that this consists of a tip which is in axial direction to the turbine, pos. 1 with inner and outer element which Pos. 2 outwardly bent lamellar rods (or solid rods) bundles, clamped connections Pos 3 which holds the lamellar bars together and a truss fairing ring (with corresponding internal reinforcement) item 4, which serves as attachment for the rods on the engine cowling.

Description

Aircraft with a jet engine are generally at risk of damage by birds during take-off, landing and in flight. This can end in a tragic consequence. With full thrust and maximum air intake into the engines, all objects that are up to about 10.00 m and more in front of the engine are sucked with the air into the interior of the turbine, where they could cause damage z. As in the worst case, it may lead to an explosion of the engine.

Protection against these problems can be provided by the specially shaped guard bar grille (the guard bar grille, which consists of individual fin bars or it can also be made of solid bars, has an outwardly bent shape.) The bars are mounted in the casing ring and at the front end, they are flexibly mounted in a tip, which is in axial direction to the turbine.), which is mounted in front of the air inlet of the engine of the Treibwerksverkleidung. Flying birds bounce off the guard bar grid and it will prevent the body parts from getting inside the turbine. Any penetrating parts of birds' bodies are channeled outside with the outside air past the compression and combustion chambers. Any minor damage caused by smaller penetrating body parts will not be a major problem because the pilot has a fair chance of landing the plane safely at the airport at night. According to my calculation, the guard bar lattice provides full-flight protection against birds weighing up to about 6.00 kg. My recommendation for the guard bar grille would be an aluminum-titanium alloy material or some other aerospace material. The bar construction depends on the strength of the respective drive (solid bars or lamella bars).

The invention (guard bar grate) is a financially viable solution, provides added security for aviation, and does not require additional changes to the engine cowling except for a corresponding reinforcement of the fairing ring to which the guard bar grille is attached.

The appearance of the invention is shown in Supplement No. 1 and items in Supplement Nos. 2-4.

Positions of Supplement 1:

• Pos. 1 tip
• Pos. 2 lamella bars
• Pos. 3 Clamping connections only for lamella bars
• Pos. 4 Trebwerksverkleidungs ring

In Supplement 1, the guard bar grille is shown in the assembled state, which is attached to the reinforced trim ring of the engine cowling, the air inlet.

Positions of Supplement 2:

• Pos. 1 Tip with cross-section A-B
• Pos. 1a fixing screw
• Pos. 1b Cross section with outer and inner element
• Pos. 1c Cross section of inner element with rod channel guide
• Pos. 1d Cross section of outer element

Attachment 2 shows the tip in its individual parts. The tip bundles the solid material and Lammelenstäbe, which are held by the inner and outer element.

Positions of Supplement 3:

• Pos. 2 lamella bars in I and Y form where the upper side is aerodynamically shaped
• Pos. 2a lamella bars I - form in attached condition
• Pos. 2b Slat rods Y - form in attached condition
• Pos. 4 Trebwerksverkleidungs ring with corresponding inner reinforcement, to which the rods are attached

The lamella bars in the Y-shape are intended for larger turbine engines.

Positions of Supplement 4:

• Pos. 2 Side view of the lamellar rod with cross-section C-D and E-F.
• Pos. G Cross-section of the tip and lamellar rod in assembled condition.
• Pos. H The clamp is attached to the upper lamella of the lamellar rod

Claims (3)

Protective bar grille for jet engine, characterized in that this consists of a tip which is in axial direction to the turbine, pos. 1 with inner and outer element which Pos. 2 outwardly bent lamellar rods (or solid rods) bundles, clamped connections Pos 3 which holds the lamellar rods together and one Trebwerksverkleidungs ring (with corresponding inner reinforcement) Pos. 4 which serves as a fastening for the rods on the engine cowling. Guard bar grille according to claim 1, characterized in that its special shape (bent outward) and construction soft is mounted on the air inlet of the engine cowling (the jet propulsion plant), protection against penetrating objects and birds, up to about 6.00 kg Body weight, offers. A guard bar grille as claimed in claims 1 and 2, characterized in that the assembly can be carried out without special and major alterations to the engine cowling ring (with corresponding internal reinforcement).

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