Army, Bell Test New “Stealthy” Helicopter for 2030

By Kris Osborn

Next-generation V-280 Valor tilt-rotor aircraft slated to be operational by the 2030s.

While developers stop short of calling the new project a “stealth” helicopter, they do acknowledge they are engineering “stealthy” characteristics — such as infrared (IR) heat suppressing systems and various fuselage contour constructions as a specific way to make the new aircraft less targetable by enemies.

“We will definitely employ some passive measures in terms of how we shape the aircraft, to make it invisible. The key is not to be able to target it and reduce the signature passively so radar sweeps do not see anything. In the end, you do not want to get detected or engaged,” Vince Tobin, vice president of advanced tiltrotor systems, Bell Helicopter, told Scout Warrior in an interview.

While, quite naturally, many of the specifics regarding stealth technology are not available, there are a few broad parameters followed closely by developers of low-observability aircraft. They include reducing the heat signature coming from engines or exhaust along with efforts to shape the exterior of the aircraft to be less detectable to “pings” or return signals to enemy radar.

Radar sends electromagnetic signals, pulses or “pings” traveling at the speed of light – bounces them off of an object – and analyzes the return signal to determine the shape, size and speed of an enemy target. For this reason, electronic “jamming” is another tactic used to thwart or throw off enemy radar systems.

Recognizing the importance of lowering the helicopters heat signature, Tobin explained that Bell is now investigating cutting-edge engine technologies specifically designed to reduce the heat they emit.

“We are looking for opportunities to reduce that heat signature. A lot of new technologies that the engine companies are looking for include seeking the best ways to ensure maximum performance of the engine while using an IR suppressor,” Tobin explained.