The US Air Force's Goal: Turn Cargo Planes into Makeshift Bombers

The U.S. Air Force is looking at arming otherwise unarmed cargo planes, pressing them into service as makeshift bombers. The service believes future wars with adversaries like Russia or China will require plenty of aerial firepower and transport planes, loaded with pallets of cruise missiles, could provide an inexpensive solution.

According to Defense News, the Air Force thinks aircraft such as the C-130J Super Hercules and C-17 Globemaster III could become part-time missile trucks.

THE JACK OF ALL TRADES

Why the C-130 Is Such a Badass Plane
The unarmed aircraft typically shuttle troops and equipment, but in a pinch, would be equipped with "smart pallets" carrying long-range cruise missiles and other munitions.

The pallets would be capable of feeding position, navigation, and targeting data to their onboard missiles. Once dropped from the rear of the aircraft, the pallets would quickly release their missile cargoes, sending them downrange to their targets. The larger the aircraft, the more missiles it could carry.

The missile truck concept pairs aircraft with large cargo boxes, of which the U.S. military has hundreds, with advanced missiles like the Joint Air to Surface Standoff Missile (JASSM). The latest version of JASSM, JASSM-XR, will have a range of 1,000 nautical miles—far enough for slow, lumbering, non-stealthy transports like the C-17 to launch dozens of missiles at enemy targets while staying out of missile and interceptor range.

Once a mission is over, the aircraft could be loaded with more smart pallets or go back to its traditional cargo carrier role.

The Air Force has been converting cargo planes into armed warbirds since the Vietnam War, when it added banks of Gatling guns to C-47 and C-130 transports. These gunships proved effective in providing close air support firepower and hunting Viet Cong forces traveling along the Ho Chi Minh trail.

Most armed transport conversions are permanent, with an unarmed transport aircraft transformed into a heavily armed gunship for good. In 2010, however, the U.S. Marine Corps introduced Harvest Hawk, a conversion kit for its KC-130 transport/tanker planes. Harvest Hawk allowed the Marines to launch Hellfire, Griffin, and Viper Strike air-to-surface missiles from a KC-130 against targets on the ground. A KC-130 equipped with Harvest Hawk can still perform aerial refueling and transport missions.

Ideally, the perfect choice for launching swarms of cruise missiles at an enemy is the upcoming B-21 Raider stealth bomber—the coolest plane we've never seen. A B-21 could penetrate enemy defenses, attack targets, and slip out of enemy territory, ideally all without being detected.

But at $621 million per aircraft, the B-21 is relatively expensive, and large numbers of the aircraft are a decade away. The Air Force has hundreds of transport planes that are paid for and ready to fly right now.