3547377

Information

• Patent Grant
• 3547377

• References
• Source

• Patent Number

  3,547,377

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1970
  54 years ago

• CPC

  • B64C27/325 - Circulation-control rotors
  • B64C11/24 - Hollow blades
  • B64C27/20 - Rotorcraft characterised by having shrouded rotors
  • B64C2027/725 - using jets controlled by piezoelectric actuators
  • Y02T50/34 - Helicopter rotor blades lift efficiency
  • Y10S415/914 - Device to control boundary layer

• US Classifications

  • 244 - Aeronautics and astronautics
  • 415 - Rotary kinetic fluid motors or pumps
  • 416 - Fluid reaction surfaces