Drone Delivery Becomes a Reality in Remote Pacific Islands

In Vanuatu, delivery drones will fly vaccines to isolated villages beginning in September

Drone delivery of vaccines to the South Pacific island nation of Vanuatu.
Photo: UNICEF
Currently, health workers in Vanuatu often hike over mountains to deliver vaccines--but drones can fly over them.
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This September, delivery drones will begin to fly the friendly skies of Vanuatu. And this isn’t a one-shot demonstration, like many of the stunts we’ve seen from the likes of Amazon and Google. This is an attempt to make drones part of the medical infrastructure.  

The South Pacific island nation of Vanuatu, a string of 83 volcanic islands spread over 1600 kilometers (995 miles), has just issued a “request for tender” to drone companies around the world. The companies are invited to submit bids for bringing vaccines to scattered hospitals and health clinics on three islands. With a government contract available for each of the islands, up to three companies will then begin a two-month trial in September. 

Companies have a chance to prove both their technology and, just as importantly, their business model. For all the optimism that delivery drones will make economic sense in this context—where lightweight and urgently needed packages must be transported across wild and mountainous landscapes with few roads—the premise has yet to be proven. 

“First we need to find if the drones are useful for the task,” says Christian Vazquez, a project manager for UNICEF, the United Nations division that helped conceive and organize the drone challenge in Vanuatu. “At the end of this, once we have the data, we’ll see if they can improve the level of services, if they can reduce wait time [for vaccines], and if the extra cost will be worth it.”

The conditions in Vanuatu make vaccine distribution a tough challenge. Today, shipments are flown from the three major islands (which have cities and airports and such) to small rural islands in 9-seater planes. When a plane rolls to a stop on the grass airstrip, it’s met by someone from the local health clinic—but that’s assuming that one of the few trucks on the island is available and in working order.

map of Vanuatu islands

The health worker picks up the vaccines, which are packed in ice, and hurries back to the clinic to stash the precious vials in a refrigerator—but that’s assuming the fridge and the clinic’s solar power system are working. Any breakdown is a serious problem, because spare parts can take weeks to arrive. And the whole operation is very expensive. 

That precarious process just gets the vaccines to the main clinic on each small island, notes Vasquez. Each island also has many remote and isolated villages, whose inhabitants may not visit the clinic. “It’s very traditional, and many villages are ruled by a chief,” he explains. “People live in family groups and don’t leave, so there’s been no need to build roads between one village and another.” When UNICEF workers set out to bring vaccines to the villages, they often hike for hours over volcanic mountain ridges. “And you need to keep the vaccines cold the whole time,” Vasquez says wearily.

With the current system, determined health workers and UNICEF staffers are getting vaccines to maybe 80 or 85 percent of Vanuatu’s children, Vasquez estimates. “But the curve is not linear,” he says. “Getting to those last 15 or 20 percent left behind is very difficult.”

UNICEF and the government of Vanuatu expect that a few drone companies will become the long-term solution to the many logistical challenges of “last-mile delivery” of vacccines on the small islands. It may also prove economical to fly the vaccines from the main islands to the small islands via drones; that premise may be tested in a later phase of the project. If it all works out, Vasquez says the model can be replicated throughout the Pacific islands, and maybe in other nations with far-flung and isolated villages.

The Wingcopter drone has both fixed wings and propellors.
Image: Wingcopter

Wingcopter, a drone company based in Germany, is one of those planning to offer a bid for the Vanuatu contracts. The company’s chief operating officer, Ansgar Kadura, says most customers use its versatile Wingcopter 178 for mapping and remote sensing.

But Kadura says that its newest model, the Wingcopter 178 Heavy Lift, with a maximum payload of 6 kilograms (13 pounds), is well suited for cargo delivery. “In the transport of vaccines we see the first step towards a more flexible supply chain of medical commodities via drone,” he tells IEEE Spectrum in an email, “but we would not stop there.”

Once Vanuatu has the infrastructure and regulations to support a drone network, Kadura hopes the health care system and other industries will see other reasons to send Wingcopter’s drones flying. Their drones have a hybrid design that uses both fixed wings and propellers, allowing for vertical take off and landing (like a helicopter) and efficient flight (like a plane). The Heavy Lift model has a range of up to 100 kilometers (62 miles). 

Skybase, another company preparing to submit bids, comes from New Zealand. Founder Michael Read says his company is focused on demonstrating its “beyond line of sight” drone tech; currently, most regulations for drones require that the operator be able to keep an eye on the flier. 

Vanuatu is an excellent place for a demo, Read says, “you have to fly not only where you can’t see the drone—you have to fly where radio signals can’t see the drone.” When the delivery drones fly behind a mountain, the operators will have to send signals either via a relay aircraft or a satellite. While such data systems are standard in big aircraft, miniaturizing them for drones was a tough challenge, Read says. Skybase uses a mesh network technology that allows operators to see real-time video from the drone and have real-time control of its flight, if desired (though Read notes that automated flight is the norm). 

Read didn’t set out to build a delivery drone service. “We’re actually a data and networking company,” he says. “We happen to use drones to deliver data via an airborn mesh network. But solving the payload delivery challenge first means solving the data challenge—and we’ve done that.”

Skybase is drone-agnostic, Read says; it will put its software and control systems onto any piece of hardware will serve the needs of its customer. For the Vanuatu vaccine trial, the company will, like Wingcopter, use a hybrid craft with fixed wings and propellers. In its bids, the startup is partnering with MAG Aero, a U.S. drone company better known for operations involving surveillance. 

While Read agrees that the economics and logistics of drone delivery are still being sorted out, he says the Vanuatu trial is worth doing regardless of the profit motive. “If it turns into a commercial opportuny, fantastic,” Read says. “But for us, it’s more about showing that drones can be used for good  and proving that the time has come.”

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