AviationNews –
Stavatti Aerospace has officially presented the SM-39 Razor, an ultra-futuristic fighter concept aimed at the U.S. Navy’s F/A-XX Next Generation Air Dominance (NGAD) program. Boasting a striking triple-fuselage design and a projected top speed of Mach 4, the Razor represents a high-stakes independent challenge to established defense giants like Boeing and Northrop Grumman.
The SM-39 Razor is positioned as a potential replacement for the F/A-18E/F Super Hornet and a complement to the F-35C within the Navy’s carrier air wings. While the U.S. Air Force focuses its F-47 NGAD program on pure air superiority, the Navy’s F/A-XX requirement demands a multi-role platform capable of air-to-air combat, surface strikes, and advanced electronic warfare. Stavatti’s entry enters a crowded field during a critical phase of the 2026 Fiscal Year, as Congress pressures the Pentagon to accelerate the selection of a sixth-generation platform to counter emerging Pacific threats.
On a technical level, the Razor is designed around a semi-monocoque titanium foam metal sandwich structure to withstand the extreme thermal stresses of near-hypersonic flight. Power is intended to come from twin variable-cycle afterburning turbofans, potentially delivering a supercruise speed of Mach 2.5. The aircraft features a unique “batwing” silhouette with three distinct fuselages: a central pod for the pilot and two lateral nacelles housing the engines and internal weapon bays. This configuration is engineered to reduce supersonic wave drag while providing the internal volume necessary for advanced sensors and future directed-energy weapons.
“The SM-39 is a sixth-to-seventh generation fighter and a direct bridge between atmospheric aircraft and future reusable space fighters,” according to official product documentation from Stavatti Aerospace. The company highlights that the design’s radical planform allows for an efficient distribution of systems, enabling it to act as a command hub for a swarm of Collaborative Combat Aircraft (CCA).
Despite its ambitious performance claims, the project faces significant skepticism from industry analysts. Critics point out that Stavatti, based in Niagara Falls, has yet to produce a flying prototype since its founding in 1994, leading many to view the Razor as a “paper airplane.” Furthermore, experts question the feasibility of a turbofan reaching Mach 4 without catastrophic aerodynamic heating, which could turn the airframe into a “flying torch” detectable by infrared sensors for hundreds of miles.
In conclusion, the SM-39 Razor is a bold, science-fiction-inspired vision that pushes the boundaries of conventional aerospace engineering. Whether it can transition from digital renders to a carrier deck depends on Stavatti’s ability to prove its physics-defying speed claims to a cautious Department of Defense.