US2017225797A1PendingUtilityA1

Aircraft design for air to air refueling

Assignee: SIKORSKY AIRCRAFT CORPPriority: Oct 1, 2014Filed: Jul 1, 2015Published: Aug 10, 2017
Est. expiryOct 1, 2034(~8.2 yrs left)· nominal 20-yr term from priority
B64C 2027/8227F16F 15/02B64C 27/82F16H 37/02B64C 27/12B64C 27/33B64D 45/02B64C 2027/8209B64C 13/18B64C 2027/8272B64C 27/78F05D 2220/329B64C 27/51F16D 13/72B64C 19/00B64C 27/52F16D 13/52B64C 27/48B64C 7/00B64C 27/008F05D 2270/021B64C 27/54B64C 2027/8281B64C 13/503F16D 13/74B64C 27/322B64C 27/32B64C 27/80F02C 9/28B64C 2027/8263B64D 39/06B64C 27/473B64D 39/00B64C 27/001B64C 27/006B64C 2027/004B64C 27/14B64C 27/10B64C 27/57B64D 35/06B64C 13/04B64C 2027/8236B64C 27/467B64C 13/50B64U 10/10B64C 27/08B64C 1/0009G05D 1/0816G05D 1/0858G05D 1/08G05D 1/0204G05D 1/0202G05D 1/0077B64C 27/16Y02T50/10
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Claims

Abstract

An aircraft is provided including an airframe, an extending tail, and a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly. The upper rotor assembly and the lower rotor assembly each include a plurality of blades. A translational thrust system is positioned at the extending tail and provides translational thrust to the airframe. The plurality of blades of the main rotor assembly extend beyond a nose of the aircraft by about 13 inches.

Claims

exact text as granted — not AI-modified
1 . An aircraft comprising:
 an airframe;   an extending tail;   a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly, the upper rotor assembly and the lower rotor assembly including a plurality of blades; and   a translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe;   wherein the plurality of blades extend beyond a nose of the aircraft by about 13 inches.   
     
     
         2 . The aircraft according to  claim 1 , further comprising a refueling probe mounted to the airframe and fluidly connected to a fuel tank of the aircraft, the refueling probe being configured to form a connection with a complementary component to form a fuel flow passage there through. 
     
     
         3 . The aircraft according to  claim 2 , wherein a first end of the refueling probe does not extend beyond the plurality of rotor blades. 
     
     
         4 . The aircraft according to  claim 2 , wherein the refueling probe is configured to move between a retracted position and an extended position, and wherein such movement between the retracted position and the extended position does not include telescoping. 
     
     
         5 . The aircraft according to  claim 2 , wherein in the retracted position, the refueling probe is housed within a cavity formed in the airframe near the nose. 
     
     
         6 . The aircraft according to  claim 2 , wherein in the extended position, the refueling probe has a reduced impact on drag of the aircraft. 
     
     
         7 . The aircraft according to  claim 2 , wherein the aircraft is configured to connect the refueling probe with the complementary component when the aircraft is not in a nose-down attitude.

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