NATO is ready to switch and modernize its present helicopter fleet, and Airbus Helicopters is giving us a take a look at its imaginative and prescient of the rotorcraft future with the discharge of two ideas being submitted for the alliance’s procurement competitors.
With the quickly altering geopolitical state of affairs and the emergence of recent applied sciences advancing by leaps and bounds, NATO has set itself the purpose of quickly rearming whereas adopting new insurance policies to fulfill trendy challenges. As a part of this, the alliance plans to switch its fleet of 900 medium-lift rotorcraft between 2035 and 2040.
This falls beneath NATO’s Subsequent Era Rotorcraft Functionality (NGRC) program, involving France, Germany, Greece, Italy, the Netherlands, Britain, and Canada, with the US and Spain sustaining observer standing. After all, there’s extra to it than merely getting a nod from over half a dozen nations to order a job lot of whirlybirds. It additionally means bettering efficiency whereas lowering manufacturing timelines and working prices.
Particularly, what the NGRC program needs is a brand new helicopter or related rotorcraft with a spread better than 900 nm (1,035 miles, 1,667 km) with out refueling, an optimum cruising velocity of 220 knots (253 mph, 407 km/h), and the flexibility to hold 12 to 16 combat-equipped troops or a payload of 4 tonnes. All this should come at a flyaway value goal of €35 million (US$) or much less per airframe, with working prices between €5,000 and €10,000 (US$5,900 and US$11,800) per flight hour.
Oh, and it should be pilot non-obligatory with full autonomous or remotely piloted capabilities, as a result of why not?
To fulfill these objectives, Airbus is approaching the issue from two distinctly totally different but complementary angles. Whereas competitor Leonardo is placing ahead a tiltrotor craft and Sikorsky is presenting a compound pusher design primarily based on its X2 expertise, Airbus has submitted two ideas of its personal.
The primary is a standard evolutionary design that basically refines conventional helicopters relationship again to the Forties. The purpose is a brand new plane emphasizing reliability, a low acoustic signature, and lowered working and upkeep prices. It is usually supposed to be fast to construct in giant numbers and simple to keep up in hostile environments the place correct restore services could also be scarce.
Although it has a lot in widespread with its NH90 predecessor to assist maintain prices down, the traditional idea makes use of a sophisticated five-blade rotor system with Blue Edge expertise. Right here, the blade ideas are staggered so {that a} following rotor blade doesn’t intersect the vortex generated by the one forward of it, lowering noise and vibration.
As well as, the idea encompasses a new anti-torque tail rotor designed to be safer round floor troops whereas bettering aerodynamics. One other enchancment is a twin-engine configuration with an Eco Mode that enables one engine to cycle into standby throughout cruise, lowering gas consumption by as much as 20%.
The second Airbus entry is the Excessive-Velocity Compound idea, derived from the corporate’s Speedy And Price-Efficient Rotorcraft (RACER) demonstrator. It’s instantly distinguishable from the traditional idea by its box-wing design and, as an alternative of a tail rotor, two lateral pusher propellers.
On this configuration, the field wing supplies carry at excessive speeds whereas the pushers generate ahead thrust. In keeping with Airbus, the wing can present 40% of the required carry in cruise. This reduces the load on the primary rotor, stopping retreating blade stall and enabling larger speeds. The principle rotor as an alternative focuses totally on vertical carry and management, slowing in horizontal flight to scale back drag.
After all, there’s a trade-off. The box-wing idea requires a extra advanced interconnected shaft system, permitting the engines to switch energy between the primary rotor and the lateral propellers. This not solely improves effectivity but in addition serves as a significant security function within the occasion of engine failure.
Each ideas share widespread options, together with hardware-agnostic software program for integrating new weapons and sensors, a triple-redundant fly-by-wire management system, and built-in digital warfare suites that includes Directed Infrared Countermeasures (DIRCM) and automatic chaff and flare dispensers coordinated by AI-driven menace detection. Each plane are additionally configured for Manned-Unmanned Teaming (MUM-T), permitting them to behave as digital management facilities for small and huge drones.
The place the 2 ideas differ is basically by way of efficiency. The standard idea is designed for decrease velocity operations emphasizing reliability, hovering functionality, and lowered complexity. The box-wing idea, in the meantime, is optimized for long-range, high-speed missions with better technical complexity.
For instance, the traditional idea has a prime velocity of about 160 knots (184 mph, 296 km/h), whereas the box-wing design can attain 220 to 235 knots (253 to 270 mph, 407 to 435 km/h). In different phrases, the traditional plane is geared toward utility and medevac roles, whereas the box-wing model is meant for fight and penetration missions.
“We wish to be sure that Europe is able to suggest a platform that can greatest match our army companions’ wants by way of affordability, operational effectivity and most availability for each the traditional helicopter and for the excessive velocity rotorcraft,” mentioned Bruno Even, CEO of Airbus Helicopters. “These two ideas are a foundation to additional change with our army companions on their imaginative and prescient and wish for future army operations.”
Supply: Airbus Helicopters
