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Picture shows simulated installation

Picture shows simulated installation

LARGER testing Tests  of  a  Re-­‐cycled  Airliner

George Seyfang 19th  April  2015  

Concept  -­‐-­‐  Re-­‐cycling  old  airliner  components  into  economic  ThiiinK-­‐sail  units  

Model  with  Flap  in  wind  tunnel  

Model  on  suspended  plaBorm    PlaBorm  rotates  to  change  flap  angle    Load  cells  measure  LiF  and  Drag  forces    Electrical  wire  to  motor  inside  the  rotor    -­‐-­‐  up  to  4500  RPM  with  liJle  vibraMon      Tunnel  speed  up  to  10m/s    CL  and  CD  based  on  rotor  area    L  x  D    

IniMal  Test  Data  (similar  to  previous  results)  

Rotor  TesMng  Improvements  

•  Rotor  has  electric  motor  inside  rotor  to  reduce  vibraMon  

•  Rotor  is  supported  with  a  top  bearing  to  reduce  vibraMon  

•  Rotor  and  Flap  are  mounted  on  hanging  plaBorm  to  reduce  fricMon  

•  TesMng  is  now  possible  at  significantly  higher  rotor  speed  raMos  (w/v)  

•  B.  L.  trips  on  rotor  reduce  (but  do  not  eliminate)  Reynolds  No.  effects  

•  Usual  caveats  on  accuracy  of  small-­‐scale  tesMng.....  

Comments  on  Re-­‐cycled  Airliner  Concept  

•  Basic  concept  seems  to  work  !  

•  Body/Rotor  should  be  circular  to  about  3%  +/-­‐  •  Body/Rotor  need  not  be  constant  diameter  cylinder  •  Wing/Flap  shape  is  OK  •  Components  do  not  need  to  be  very  smooth  

•  PracMcaliMes  over  mounMng,  weather  protecMon  etc  

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