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Setting World Endurance Record, Vanilla Aircraft - Small diesel-powered unmanned airplane pushes the envelope for low-cost, long-range, persistent flight - 4 January 2017

The Vanilla Aircraft VA001, a small diesel-powered airplane under development through DARPA (left), flew for 56 hours recently over Las Cruces, New Mexico (right), setting a new world record for flight duration for its weight class. The airplane is designed to ultimately carry a 30-pound payload at 15,000 feet for up to 10 days without refueling. Click below for high-resolution image.

A DARPA-backed small business effort broke boundaries for long-endurance flight this month by launching a uniquely designed, combustion-powered unmanned aircraft that stayed aloft for more than two days and two nights. The flight was terminated several days ahead of schedule because of incoming weather. But the craft, built by Vanilla Aircraft of Falls Church, Virginia landed safely with more than half its fuel still onboard, suggesting it is capable of setting additional records for powered flight in its weight and power class and could ultimately offer important new capabilities to ground forces and others.

Small unmanned aerial vehicles (UAVs) are an increasingly important means for military forces?especially small dismounted units?to bring extra communications or intelligence, surveillance, and reconnaissance (ISR) capabilities to the field. Current designs, however, offer relatively limited range and flight endurance; additionally, their need for frequent refueling, specialized launch and recovery equipment, and regular maintenance often limit them to flying from fixed bases close to the front lines. Vanilla?s propeller-driven VA001 is designed to carry a 30-pound payload at 15,000 feet for up to 10 days without refueling.

The VA001 started its historic flight on the morning of November 30, 2016 at New Mexico State University?s Unmanned Air Systems Flight Test Center near Las Cruces International Airport. For nearly 56 hours, the plane flew at an altitude between 6,500 feet and 7,500 feet above sea level, averaging 57 knots before landing on the afternoon of December 2.

A representative from the National Aeronautic Association?the organization that verifies and tracks flight-related world records certified the flight as achieving the world duration record for combustion-powered UAVs in the 50 kg-500 kg subclass (FAI Class U-1.c Group 1). Moreover, the flight was the fourth-longest for any unmanned airplane and the 11th-longest for an airplane of any type (manned or unmanned, solar or fuel-powered).

"This record-breaking flight demonstrated the feasibility of designing a low-cost UAV able to take off from one side of a continent, fly to the other, perform its duties for a week, and come back, all on the same tank of fuel," said Jean-Charles Lede, DARPA program manager. "This capability would help extend the footprint of small units by providing scalable, persistent UAV-based communications and ISR coverage without forward basing, thereby reducing personnel and operating costs. We're very pleased with what the Vanilla team has accomplished."


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