Digital concept art of the Bell V-280 Valor in flight. Bell Helicopter The US military wants to upgrade its stable of combat choppers.

One possible model for future combat aircraft can take off and land vertically, and then fly like a traditional airplane.

Bell's V-280, which combines a combat helicopter's fuselage with tilt-rotors, would basically be a Black Hawk that can adjust its thrust to fly like a fixed-wing aircraft once it's airborne.

The US is keenly interested in developing this kind of capability. Right now, aviation companies are competing to win contracts for the Joint Multi-Role (JMR) helicopter program, a selection process that will unfold until 2017 and help the US Army select a new multi-purpose aircraft. The V-280 could fit the bill.

The V-280's is an early stage of development and tilt-wing aircraft have an uneven record. Making the tilt-wing viable was a decades-long undertaking for defense researchers.

That work resulted in the Bell Boeing V-22 Osprey that is currently flying for the US military, although 30 people were killed in crashes during the plane's decade-long testing period.

The Bell's V-280 is a somewhat simpler aircraft, though. It uses fixed engines with moveable rotors and drive shafts; in the case of the Osprey, all three of these are moveable.

Ideally, tilt-rotor aircraft marry the maneuverability of a helicopter — which needs far less space to take off and land than any fixed-wing aircraft — with the speed and range of a plane. Bell's fact sheet on the V-280 indicates it could carry four crew and 14 passengers, with a range of up to 800 nautical miles, beating the Black Hawk's range by nearly 500 miles.

That would make the V-280 especially suited to evacuating injured soldiers. The aircraft could travel a considerable distance and land in inhospitable terrain.

The V-280 also has the advantage of being able to travel on its own to conflict zones. For one-way trips, the plane's range goes up to 2,100 nautical miles, making the V-280 "strategically self-deployable," or independent of massive transport vehicles.

Bell's fact sheet on the V-280 emphasizes its role as a support and transport aircraft rather than one designed for combat.

But in 2010, the Army's program executive officer for aviation envisioned a new "joint multirole helicopter" that would have a "light attack scout variant." Bell may have plans to showcase a mock-up of the vehicle (like the one in the tweet below) in "alternating attack/MEDEVAC [medical evacuation] configurations" at an aviation summit in March, Bell communications manager Andy Woodward told Business Insider.

This concept mock-up of the Bell V-280 Valor is really pretty. Could replace the Apache and Blackhawk #avgeek pic.twitter.com/0V8vcLDKWq — Oregon Aero, Inc. (@OregonAero) January 16, 2015

"The V280 is indeed a combat aircraft, capable of assault, attack," Woodward said. "It's marinized, so it can work in sea environments."

The military is also considering adding firepower to the V-22 Osprey, yet another instance of developing the offensive capability of a tilt-rotor aircraft.

Bell's biggest competitor for the Army contract is Boeing, its partner in the development of the V-22 Osprey.

Boeing has partnered with Sikorsky, creator of the Black Hawk, to create three aircraft based on the latter company's X2, which in 2010 beat the world record for helicopter speed at 260 knots — or 299 miles — per hour (although that record has since been broken). The X2 gets its motive power from a tail-mounted propeller instead of just the rotors relied upon by conventional helicopters.

This video show the Sikorsky X2 warming up before beating the world record for helicopter speed in 2010.

Andy Woodward told Business Insider that "We will be flying a V-280 by September of 2017."