LONG-RANGE LIQUID HYDROGEN TURBOPROP CARGO UAVs

Powerplant: Horizon PEMFC 50% ef 5 kw/kg, 3 hp/lb

Gross weight: 10,500

Empty weight @55%: 5,775

Drag: 800 lbs

Power: 520 hp

Hydrogen consumption: 23.3 kg/hr

Propeller diameter: 8.75 ft

Number of propellers: 2

Power loading: 5.5 hp/ft2

Power-thrust ratio: 5.15 @sealevel, 1.54 @FL280

Cruise speed: 320 MPH

Range: 4700 miles

Endurance: 14.68 hours

LH2 tankage drag thrust penalty: 20 kg LH2

LH2 fuel weight: 342 kg

Tankage @35%: 119 kg

Fuel weight at 2000 miles: 154 kg

Volume: 170 cubic feet

Block fuel weight: 1017

Payload: 4725 lbs

Net Payload 4700 mi: 3700

Net payload 2000 mi: 4285

Equivalent jet fuel weight with PT6-A67B: 5390 lbs

Cargo cost for 7000 miles: $0.85/kg @ $2/kg LH2

Conventional air freight pre-Covid average Hong Kong North America: $3.5/kg

Cost advantage: 4x

UAV manufacturing cost: $1,500,000

Airframe life based on 757: 100,000 hours

Hourly airframe cost: $15

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