I did that TS II design years ago and now when I downloaded the thrust HP I finally got some proof to the basic idea that I had on mind when doing the 3-views.
First I tried to solve why Tsunami was not an outright winner despite small size it possessed. One detail started to bug me...why did they change the prop so often ? I tried to guess..they had too short landing gear oleolegs to be able to install a bigger prop.
Okay a small plane does not need a big prop...but...if a plane could swing a bigger but 2 blader prop it might have the edge.
Eventhough the thrusthp does not give accurate figures ( it gave 27 440 hp need for Mustang prop at 511 mph ).
I placed first 2,8 metre 2 blade prop ( 110 inch ) and the 110 inch 4 blader....and finally 126 inch 2 blader ( 3,2 meters )..and guess what...the 126 inch had same thrust ( 10 600 lbs ) and speed at same rpm as the 110 in 4 blader ( 11 200 lbs ), but needed less hp:s to do it.
I hope I am right..all in all my racer seemed to need half the hp:s as Mustang..but not sure if that is enuf. I can increase the prop into 3,7 metre dia..but it looks too big for the plane ( in sideview a 2,8 metre is shown.
Never mind the small racer....it is my toy...and 425 mph at 2 x 70 hp engines..hopefully !
best regards,
Juke
First I tried to solve why Tsunami was not an outright winner despite small size it possessed. One detail started to bug me...why did they change the prop so often ? I tried to guess..they had too short landing gear oleolegs to be able to install a bigger prop.
Okay a small plane does not need a big prop...but...if a plane could swing a bigger but 2 blader prop it might have the edge.
Eventhough the thrusthp does not give accurate figures ( it gave 27 440 hp need for Mustang prop at 511 mph ).
I placed first 2,8 metre 2 blade prop ( 110 inch ) and the 110 inch 4 blader....and finally 126 inch 2 blader ( 3,2 meters )..and guess what...the 126 inch had same thrust ( 10 600 lbs ) and speed at same rpm as the 110 in 4 blader ( 11 200 lbs ), but needed less hp:s to do it.
I hope I am right..all in all my racer seemed to need half the hp:s as Mustang..but not sure if that is enuf. I can increase the prop into 3,7 metre dia..but it looks too big for the plane ( in sideview a 2,8 metre is shown.
Never mind the small racer....it is my toy...and 425 mph at 2 x 70 hp engines..hopefully !
best regards,
Juke
Comment