The Naked Scientists

The Naked Scientists Forum

Author Topic: How Can This Helicopter Have No Tail Propeller ?  (Read 3586 times)

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
How Can This Helicopter Have No Tail Propeller ?
« on: 22/04/2008 15:43:20 »
Dear Chopperologists,

See this Chopper used by the Manchester Police ?





How can it do what it does without a tail propeller ?








 

Offline Karen W.

  • Naked Science Forum GOD!
  • *******
  • Posts: 31653
  • Thanked: 5 times
  • "come fly with me"
    • View Profile
How Can This Helicopter Have No Tail Propeller ?
« Reply #1 on: 22/04/2008 17:22:13 »
Perhaps it uses Jet exhaust or gyroscopic device of some kind.

 Is it possible to direct the exhaust back to the tail..
and have it blow out that way to stabilize the  fusilodge.....like a tail rudder..?   Do you have  a closer up picture? Well maybe my screen is to small....I will look later on big screen. 
" Maybe it has Vectored thrust "
 

Offline Make it Lady

  • Neilep Level Member
  • ******
  • Posts: 4050
  • Hands-on fun for everyone!
    • View Profile
How Can This Helicopter Have No Tail Propeller ?
« Reply #2 on: 22/04/2008 17:54:12 »
The helicopter has specially curved surfaces on its tail. Air jets are sent out along these surfaces creating a circular motion in the air. If any fluid is directed along a curved surface it will tend to carry on curving after it leaves the surface. It is a NOTAR system that was developed by Boeing.
 

Offline Karen W.

  • Naked Science Forum GOD!
  • *******
  • Posts: 31653
  • Thanked: 5 times
  • "come fly with me"
    • View Profile
How Can This Helicopter Have No Tail Propeller ?
« Reply #3 on: 22/04/2008 19:05:21 »
So thats cool. it does then use the jet exhaust or air....it is interesting thats how they direct the air.. but aerodynamics have really came a long way... its amazing what the simp changes in the lines can make!  thanks for sharing that ""NOTAR SYSTEM" term and THE explanation....!! how long have they been  using that design?
 

Offline DoctorBeaver

  • Naked Science Forum GOD!
  • *******
  • Posts: 12656
  • Thanked: 3 times
  • A stitch in time would have confused Einstein.
    • View Profile
How Can This Helicopter Have No Tail Propeller ?
« Reply #4 on: 25/04/2008 08:22:33 »
The helicopter has specially curved surfaces on its tail. Air jets are sent out along these surfaces creating a circular motion in the air. If any fluid is directed along a curved surface it will tend to carry on curving after it leaves the surface. It is a NOTAR system that was developed by Boeing.

Trust Sharon to know about choppers.
 

The Naked Scientists Forum

How Can This Helicopter Have No Tail Propeller ?
« Reply #4 on: 25/04/2008 08:22:33 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums