Sukhoi Su-81 “Groza” (Thunderstorm)

NATO AIR INTEL REPORT – 17 April 1946
Subject: Unconfirmed Hostile Aerial Interceptor – Codename: “Thunder Fangs”
Report Classification: Red Flag / Immediate Threat Response Required

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SUMMARY:
Recent reconnaissance and combat encounter reports over Eastern Germany indicate the presence of a highly unusual Soviet aircraft exhibiting unprecedented performance characteristics for a propeller-driven platform. NATO command has designated this airframe as “Thunder Fangs.”

This aircraft does not conform to any known Soviet design lineage and appears to be an experimental prototype or a limited production interceptor developed in extreme secrecy.

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AIRCRAFT SPECIFICATIONS (Est.):
• Designation: Unknown – NATO codename “Thunder Fangs”
• Configuration: Single-fuselage, contra-rotating propeller-driven fighter
• Propulsion: Presumed twin electric motor system (unknown energy source)
• Altitude Performance: Operational ceiling approx. 10,000 meters ASL
• Cruise Speed: ~Mach 0.8
• Top Speed: Exceeds Mach 1 in dive conditions
• Turn Rate: Approx. 30°/sec (flap-assisted)
• Armament:
• 1× 50mm cannon (nose-mounted)
• 4× 20mm autocannons (wing-mounted)
• Estimated ammo capacity: high volume / high burst duration
• Additional Notes: Aircraft appears capable of high-speed maneuvers and retains energy extremely well during aggressive flight patterns.

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COMBAT ANALYSIS:

Thunder Fangs appears superior to the German Do-335Z variant in multiple domains, especially in firepower and sustained agility. The weapon loadout is sufficient to disable or destroy heavy bombers in a single pass, and the platform’s structural integrity appears designed for high-G engagements and rapid recovery.

Pilots encountering the aircraft described it as:

“Like a storm with fangs. You see it once, you’re already down.”

There are no confirmed kills against this aircraft.

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STRATEGIC CONCERNS:
• Reverse-engineering risks: The Soviets may have leveraged German tech with additional breakthroughs in electric propulsion.
• Doctrine disruption: This aircraft nullifies assumptions about jet-only air superiority.
• Psychological impact: Its presence on the battlefield creates panic among bomber crews and confidence erosion in current fighter squadrons.

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RECOMMENDATIONS:
1. Immediate deployment of ELINT flights to intercept and study the aircraft.
2. R&D acceleration on Allied advanced propeller and hybrid-electric fighters.
3. Strategic simulation of mass deployment scenario for Thunder Fangs across Eastern European fronts.
4. Name candidate for counter-project: “P-101 Ravenclaw” (US), “Tempest Mk.VIII” (UK)
Note
Slider 1 is for flaps