A number of new ideas have been added to the original Packet in the H version, which is the most recent of the two-engine Packet designs. One of the principal changes is an increase in take-off weight to 101,000 lb. which would make the twin-engine H heavier than some four-engine planes. The added weight is a result of a provision for fuel jettisoning, which is a comparatively easy matter since all fuel is carried in underwing tanks on the center of gravity of the plane. At the increased take-off weight, the Packet could carry an overload cargo of 32,000 lb. on a mission with a radius of a thousand nautical miles.
Improvements in the doors, to facilitate loading, and a strengthened cargo floor, with a roller conveyor on the floor instead of the overhead type, also are included in the changes. To increase the payload even higher, consideration has been given to the utilization of 5,500-hp. Allison T-40 engines with counter-rotating propellers. Although no production orders have been received for the H model at the time of writing, this airplane has had 100 hr. of flight time and is performing satisfactorily.
The wing span of the C-119-H is 148 ft. and overall length, 95 ft., 8 in. The designed gross weight is 80,870 lb. and weight empty, 51,307 lb. A distinguishing characteristic of all Packet designs is the twin boom for attachment of the tail. This feature facilitates loading at both the front and rear ends of the fuselage.
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