1/32 Curtiss SC-1 Seahawk

[Martinnfb]

Slipstream created by propeller is usually dealt with by the angle or the shape of the vertical stabilizer or rather bf trim tab on the rudder. There must be a simple reason, like providing the access for removing the dinghy from its given compartment.  

 

[HubertB]

I assure you that the rear canopy windows were removed for aerodynamic reasons, because of some vibrations and turbulences, Martin. Not to access the raft, when the canopy would have been jettisoned anyway if the raft was needed.

Hubert

[Martinnfb]

I can't provide any assurance, only assumptions.  

However, for some reason, the SC-2 with bubble canopy had an additional/new  dinghy hatch on the side of the fuselage. So my question is, with the unframed bubble canopy there was suddenly no need for prop wash phenomena remedy?

Having said that , if you look at the color picture in my previous post , the raft bag is sitting right there, blocking the slipstream passage with only oner way to access it.

[DocRob]

Could it be, that the drag was too big, when flown with the open canopy? There would be a much better airflow with the rear windows removed.

Cheers Rob

[Martinnfb]

Philosophy starts by finding the things that are prosaic, utterly mysterious.

The only reason to fly with open canopy would be better visibility, that would lead to the new frame-less canopy development and an issued order, "don't do it, so we don't have to cut extra holes into it..."    

 

Mom, how we are going to service the raft? And what will happened to the raft once we jettison the canopy that this this is obviously sitting on?

Look Mom, fabric covering of the raft access hole, can I rip it for better aerodynamics ? 

Oh look Mom, the fabric is still on, sucks to serve on Iowa with such prop wash.

look Mom no drag to speak about  (final phase of landing-drag sensitive).    and that's one big propellor 

 

Look Mom no additional drag to speak about on the take off either and my canopy has no extra holes. (initial catapult assist take-off)

 

 

[BlrwestSiR]

The canvas cover definitely makes sense. The fasteners certainly line up with the holes on the ones without the covering. 

The blown canopy looks like a P-47 bubbletop.