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Jet Engine Combustion Chamber Inserts

Name: Jet Engine Combustion Chamber Inserts | Combustor Liner Insert Component - Frigate
Price: 249.00 USD
Availability: InStock

Jet Engine Combustion Chamber Inserts are built to endure the extreme thermal and mechanical demands of modern gas turbines. Beyond stabilizing the flame, they play a crucial role in enhancing combustion efficiency, reducing emissions, improving structural durability, and ensuring engine reliability.

Material Specification

Hastelloy X (AMS 5536), Inconel 718 (AMS 5662)

3D Profile

Annular/Can-Type, Swirler-Integrated, CFD-Optimized Contour (±0.15mm)

Fuel Nozzle Interface

Dual-Orifice (SAE AS4059), Floatwall Mounting, 0.1-0.3mm Thermal Gap

Liner Interface

Dovetail Slots (0.2mm clearance), Film Cooling Holes (Ø0.5-1.2mm), Flanged Joints

Temperature Range

1,800-2,500°F (Combustion), 3,000°F (Peak)

Product Description

The sections below detail how these Jet engine combustion chamber inserts address critical engineering challenges commonly faced by engine manufacturers and aerospace procurement teams—delivering performance, longevity, and compliance under severe operating conditions.

Cooling Design

Effusion Cooling (500-1,000 holes), Transpiration Layers, Impingement Backside Cooling

Oxidation Resistance

Aluminide Coating (50-100µm), Thermal Barrier Coating (200-300µm YSZ)

Surface Finish

Ra ≤0.8µm (Internal), Ra ≤1.6µm (External), Laser-Drilled Hole Tolerance ±0.02mm

Dimensional Tolerances

Profile: ±0.1mm, Hole Placement: ±0.05mm, Concentricity: 0.03mm TIR

Performance Targets

Combustion Efficiency ≥99.9%, Pattern Factor ≤0.35, NOx ≤40g/kg-fuel (CAEP/8)

Technical Advantages

Jet Engine Combustion Chamber Inserts operate under high-frequency thermal transients, which produce steep temperature gradients across insert walls. This results in cyclic plastic deformation, promoting crack nucleation and growth. To counteract this, the inserts are fabricated from nickel-based superalloys with tailored γ′ precipitate morphology for resistance to both creep and fatigue. Advanced post-casting heat treatments and grain boundary engineering enhance resistance to thermal fatigue, particularly in regions subjected to high thermal cycling during takeoff and climb power settings.

Jet Engine Combustion Chamber Inserts are geometrically optimized to promote uniform air-fuel mixing and stabilize flame anchoring within the primary zone. The insert design includes integrated swirlers, axial-flow guides, and film cooling holes that regulate local turbulence intensity and enhance fuel atomization. This improves combustion stability and temperature distribution at the turbine inlet, thereby reducing the likelihood of hot streaks and associated thermal damage to downstream turbine blades.

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Industry Applications

Commercial Turbofan Engines:

Supports stable combustion under high bypass airflow conditions and ensures uniform turbine inlet temperature profiles for fuel efficiency.

Military Afterburning Turbofans:

Withstands extreme thermal loads during augmented thrust cycles and maintains structural integrity under variable pressure and temperature transients.

Helicopter Turboshaft Engines:

Enables efficient combustion in compact annular combustors operating at high power-to-weight ratios with constrained thermal management capability.

Supersonic Jet Engines:

Manages high-frequency thermal cycling and shock-induced pressure fluctuations during transonic and supersonic flight phases without geometry distortion.

Auxiliary Power Units (APUs)

Maintains combustion efficiency and reliability during frequent cold starts and rapid load changes in onboard secondary power systems.

Industrial Gas Turbines:

Delivers stable flame and reduced emissions in continuous-duty power generation with extended maintenance intervals under constant load conditions.

Geometric Stability Under Thermo-Mechanical Loads

Jet Engine Combustion Chamber Inserts are subjected to complex stress states due to the interaction of dynamic pressure waves, thermal expansion, and vibration. Insert distortion or warping can result in misalignment with the combustor dome or liner, affecting engine performance and safety. To preserve dimensional stability, inserts are manufactured using directionally solidified or HIP-processed castings with minimized residual stress.

Jet Engine Combustion Chamber Inserts must function within staged or multi-zone combustion architectures without introducing assembly complications. This requires high geometric precision and alignment with fuel injector bores, dome cooling shields, and annular liner interfaces. Inserts are designed with precise datum features and machined interface zones to ensure repeatable fitment.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure metallurgical consistency in combustion chamber inserts?

Frigate uses vacuum investment casting with strict control of alloy composition and cooling rates. Each batch is verified using spectroscopic analysis and microstructure inspection. Grain size and γ′ distribution are evaluated per ASTM standards. This ensures uniform mechanical properties in all inserts.

What coating processes does Frigate apply to improve insert oxidation resistance?

Fregatte applies high-activity aluminide or ceramic thermal barrier coatings using CVD and plasma spray methods. Coatings are diffusion-bonded to form protective oxide scales. These layers resist oxidation and hot corrosion during long exposure to high-temperature gases. Coating thickness and adherence are validated by cross-sectional SEM.

How does Frigate handle thermal distortion risks in high-cycle engine programs?

Frigate performs FEA-based thermal-mechanical simulations to predict stress zones in the insert geometry. Design changes are made to reduce deformation risk under cyclic heating. Jet engine combustion chamber inserts undergo HIP (Hot Isostatic Pressing) to eliminate internal porosity. This ensures long-term dimensional stability in harsh operating conditions.

What quality control steps does Frigate follow before delivering inserts?

Frigate conducts 100% non-destructive testing including digital radiography and fluorescent penetrant inspection. Each Jet engine combustion chamber inserts is traceable to its material lot and process route. Dimensional checks are performed using CMM equipment with aerospace-grade tolerances. Final reports meet AS9100 and AS9102 standards.

How does Frigate customize inserts for different combustor architectures?

Frigate works from OEM CAD data or reverse engineering of existing hardware. Insert geometry is tailored for can-annular, annular, or reverse-flow combustors. Cooling hole placement and swirl features are adapted for each engine’s airflow pattern. All modifications are verified using CFD and thermomechanical modeling.

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