RISE: A Demonstrator, Not a ProductThin moat
GE Aerospace (GE) — moat facet
The most radical architecture proposed in fifty years, and its own participants call it a demonstrator.
CFM's RISE programme is advancing a suite of technologies including an open fan, a compact core and hybrid-electric systems, with more than 350 tests completed toward ground and flight tests this decade1. In 2025 the partners began dust ingestion testing on next-generation high-pressure turbine blades for the compact core — the earliest such testing has ever been conducted in the development process2.
An open fan removes the nacelle that encloses a conventional turbofan, allowing a far larger fan diameter and a step change in propulsive efficiency. It is the most significant architectural change proposed in commercial propulsion since the high-bypass turbofan, and it comes with the problems that architecture has always had: noise, blade containment, integration with the airframe, and regulatory acceptance.
What matters for an investor is the word used by the programme's own participants. RISE is a technology demonstrator, not a product for sale3. No aircraft has been launched around it, no airframer has committed to it, and no certification programme has begun.
That is the right way to run it. The economics of this industry punish a premature engine launch severely, and reward the maker that is ready when an airframer finally commits. GE Aerospace's position is that it is spending now — $1,580 million of its own research and development in 2025, plus $1,409 million funded by customers and partners4 — to be the obvious choice when the decision arrives.
The risk is symmetrical. Spend too little and the next narrowbody goes to somebody else for thirty years. Spend too much, too early, on an architecture the airframers decline, and the money is gone.
The question is whether RISE is ever launched as a product, and with whom. Until an airframer commits an aircraft to it, every dollar spent is an option premium rather than an investment.
RISE has completed more than 350 tests toward ground and flight tests this decade, dust ingestion testing on next-generation compact-core blades began earlier in development than ever before, and GE Aerospace completed the first ground tests of a megawatt-class hybrid-electric system under NASA's programme in 2026. Self-funded research rose from $1,286 million to $1,580 million in a year. It is progressing, and it is still a demonstrator.
RISE is paid for out of this line; a cut would say the open fan has been deferred before any product decision is announced.
Source: GE Aerospace Form 10-K, FY2025 ↗- ReportedCFM's RISE programme is advancing a suite of technologies including an open fan, a compact core and hybrid-electric systems, with more than 350 tests completed toward ground and flight tests this decade.GE Aerospace Form 10-K, FY2025 - Item 1 Business — segment descriptions for Commercial Engines & Services and Defense & Propulsion Technologies, the CFM International 50-50 non-consolidated joint venture with Safran Aircraft Engines, the commercial engine platforms (LEAP, CFM56, GEnx, GE9X, CF6, GE90), the defence platforms (F110, F404, F414, T408, T700, T901, LM2500), the Propulsion & Additive Technologies brands, the CFM RISE programme, the customer description including airframers and sole-source positions, and the segment revenue and services shares. — FY2025 · publ. January 2026 · source ↗
- ReportedIn 2025 the partners began dust ingestion testing on next-generation high-pressure turbine blades for the compact core — the earliest such testing has ever been conducted in the development process.GE Aerospace Form 10-K, FY2025 - Item 1 general and Item 2 Properties — the installed base of approximately 50,000 commercial and 30,000 military engines and the statement that it supports an aftermarket representing approximately 70% of revenue, the FLIGHT DECK operating model, customers in approximately 120 countries, the facility count, human capital and employee numbers, the intellectual property discussion, the research and development table splitting company-funded from customer- and partner-funded spending, and the engine testing milestones. — FY2025 · publ. January 2026 · source ↗
- Third-party estimateRISE is a technology demonstrator, not a product for sale.Aviation and market coverage of GE Aerospace's narrowbody position and delivery ramp - the LEAP as the exclusive powerplant on the Boeing 737 MAX and holding more than 55% of the Airbus A320neo family through the CFM joint venture, the target of about 2,000 LEAP deliveries in 2026, first-half deliveries up 41%, and CFM RISE described as a technology demonstrator rather than a product for sale. — 2026 · publ. August 2026 · source ↗
- ReportedGE Aerospace's position is that it is spending now — $1,580 million of its own research and development in 2025, plus $1,409 million funded by customers and partners — to be the obvious choice when the decision arrives.GE Aerospace Form 10-K, FY2025 - Item 1 general and Item 2 Properties — the installed base of approximately 50,000 commercial and 30,000 military engines and the statement that it supports an aftermarket representing approximately 70% of revenue, the FLIGHT DECK operating model, customers in approximately 120 countries, the facility count, human capital and employee numbers, the intellectual property discussion, the research and development table splitting company-funded from customer- and partner-funded spending, and the engine testing milestones. — FY2025 · publ. January 2026 · source ↗