Commercial Aircraft engine concept design

Commercial Aircraft engine concept design

•  How do the Manufacturers (OEMs) plan for a Commercial Aircraft engine concept design? What Challenges & factors shape the final product ?
•  First thing Airframers like 'Airbus' & 'Boeing' do to their 'aircraft design plan' is to involve a 'Propulsion system maker' like GE, Rolls-Royce, P&W, or others.
•  Sometimes this chemistry between Airframer & Engine maker does not work.
•  Last week, we witnessed Rolls-Royce freezing it's ambitious ‘UltraFan’ Project despite deep financial backup, much hype & cutting edge the technology involved to it.

 The Factors that really affect a commercial aircraft engine concept design is:

 Business Case Of Engine.

• Development Cost.
• Manufacturing cost.

 The revenue source for Engine.

• Engine Unit sale.
• Sales Volume/Market demand.
• Spare parts/Supply chain.

 Aircraft specific Requirement.

• Passengers capacity.
• Cruise speed & Insertion altitude.
• Balanced field length.
• Power & bleed air-off takes (usage).

 Customer Interest value.

• Revenue Generation.
• Payload Offer.
• Range definition.

 Cost of Ownership.

• Price of the engine.
• Fuel Burn (efficiency).
• Maintenance cost.

 Regulatory Requirement.

• Safety.
• Noise.
• Emissions.