Convair YF2Y-1 Sea Dart

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Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » November 17th, 2020, 2:22 pm

With the knowledge that it’s now no longer taking on water at the rear, sitting at the correct water line and we can easily manage the aircraft in the shallows using waders we can move onto the RC boat bit of the test. With Dave in the follow boat along with three others either driving filming or taking photos we set off for 25 minutes of testing the model at slow speeds. Dave will be able to talk in more detail but the handling seemed ok although it was hampered by weed collecting on the ski struts as you can see below.

Image_DSC7873 by Alex Jones, on Flickr

The water rudders at the back which are actuated by two big Savox waterproof servos worked well and continued to work even when submerged for over 5 hours. The wind was around 8 knots and the huge vertical stabiliser did hinder things but it was still possible to turn in either direction without assymetric thrust. The full size aircraft used a combination of asymmetric thrust and rudder to turn and in the second test the water rudders were not used but it was still possible to control direction using only asymmetric thrust.

Dave Kellett
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Re: Convair YF2Y-1 Sea Dart

Postby Dave Kellett » December 11th, 2020, 7:56 am

PM sent

Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » January 23rd, 2021, 5:20 pm

After many emails and messages asking for video we have finally put together some footage of our first test taken back in September 2020. We hope everyone is keeping safe and well and when movement restrictions are relaxed and it's sensible to do so we will be ready for the next set of tests culminating in the first flights.

https://www.youtube.com/watch?v=4bCYdU7blWQ

stuart knowles 1611
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Re: Convair YF2Y-1 Sea Dart

Postby stuart knowles 1611 » January 23rd, 2021, 10:52 pm

It seems to display a willingness to rise up onto the ski. This is an amazing project, fair play to all involved

Dave Kellett
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Re: Convair YF2Y-1 Sea Dart

Postby Dave Kellett » April 16th, 2021, 9:16 am

Hi Alex and the team, I hope that you're all well and have been keeping safe.
Now that Spring is here, and the weather is improving and lockdown is beginning to ease. Are you any closer to making those first flights of the Sea Dart?
I am so looking forward to watching any videos that you may have.

My very best regards

Dave

Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » April 17th, 2021, 12:18 pm

Hi Dave,

We hope to do the next set of tests this summer, possibly July but this is yet to be confirmed.

Many thanks

Alex

Dave Kellett
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Re: Convair YF2Y-1 Sea Dart

Postby Dave Kellett » August 3rd, 2021, 10:26 am

Hi Alex & of course the team,
It's been a while since your last posting, is there any progression toward the maiden flight?
I hope that all is well

Dave

Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » August 3rd, 2021, 12:23 pm

Hi Dave,

We are progressing and have just completed the second set of hydrodynamic tests last month. We have some challenges to overcome now we are exploring the higher speed elements on the water. We have made a video update detailing our progress and this will be uploaded this week. I will post the url on here when complete.

Cheers, Alex

Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » August 6th, 2021, 10:39 am

A video update regarding the latest round of hydrodynamic testing on our Convair SeaDart.

https://www.youtube.com/watch?v=zbDP2_uhZ4E

Dave Kellett
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Re: Convair YF2Y-1 Sea Dart

Postby Dave Kellett » November 23rd, 2021, 3:16 pm

Hi Alex,
I hope that you are keeping well.
Having watched your last video clip, which I found very informative. Has there been any further progression towards a maiden flight?

Best regards

Dave

Nigel Cox
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Re: Convair YF2Y-1 Sea Dart

Postby Nigel Cox » November 27th, 2021, 8:03 pm

This just popped up on my Instagram feed https://www.instagram.com/tv/CWxw_faBFs ... =copy_link

Dave Kellett
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Re: Convair YF2Y-1 Sea Dart

Postby Dave Kellett » December 28th, 2021, 11:04 am

Hi Alex and the team.
The build thread has gone very quiet,
I hope all is well and would like to wish you all a very happy new year, and indeed to all the membership of the LMA.

regards

Dave

Nigel Cox
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Re: Convair YF2Y-1 Sea Dart

Postby Nigel Cox » January 8th, 2022, 8:33 pm

Sea Dart 1.jpg
Sea Dart 1.jpg (203.07 KiB) Viewed 457 times


This came up in a Tweet this afternoon

Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » January 12th, 2022, 1:57 pm

Hi All,

We're still here... plenty of work has been completed in ancipation of another test. We have completely re-designed the aft ski mechanism to allow the oleo extension to be controlled hydraulically and have damping through the use of an oil/air accumulator so the oleo can still fully retract ready for ski retraction. We have even managed to have a net zero weight gain with the conversion helped with some new components and material changes etc... I'm hoping that all the new parts will arrive next week. Once I have everything in hand I'll do a proper update with some pictures.

Happy New Year to all,

Alex

Alex Jones
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Re: Convair YF2Y-1 Sea Dart

Postby Alex Jones » January 12th, 2022, 2:00 pm

I forgot to mention I have uploaded all the runs from our last tests which can be viewed on this playlist:

https://www.youtube.com/watch?v=-Xriqk7 ... 0yz0LJ7d7Z

maurice northcott
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Re: Convair YF2Y-1 Sea Dart

Postby maurice northcott » January 13th, 2022, 9:12 am

Happy New Year Alex and the Team. That is all great news, thank you Alex. Thank you also for the videos, I was mildly surprised at how quickly she raises her nose. I did get a bit concerned at times when she appeared to be "so close" to the banks. Thank you again for the update.
Cheers
maurice


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