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Author Topic: My first RC pulse jet  (Read 834 times)
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B Lo
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« on: April 13, 2015, 06:43:17 AM »

Hi Troops,
              When HK released their remake of the Dynajet Pulse jet engine, I just had to have one (or three). Then came the issue of what to put it on, R/C model or Control Line? Decided to go with R/C as I have access to a property in country Australia that has a full size runway of 900 metres and is in the middle of nowhere, so no issues with noise. Not many ARF pulse jet models on the market at the moment, actually zero in the size I wanted. Then I came across a You Tube video of a model using an Italian engine made by Zanin. Could not find any plans, so I took a number of screens shots from the video and sketched up some plan/side view drawings. As the HK engine is smaller than the Zanin I scaled down the size a bit using the tried and trusted TLAR process (that looks about right).
A foam core wing of 1200mm span and 250 mm cord was made (RG15 section), based on a Quickie 500 pylon model. Balsa tail feathers were then laminated up and all flying surfaces finished in lightweight glass cloth. The Ailerons have been 'live hinged' and gap sealed to keep it aerodynamically clean. The fuselage is a traditional balsa/ply box with carbon fiber reinforcing in the tail boom.
This is a very pragmatic airframe and not the most elegant, but it performs an absolute treat. Tracks well and the glide after fuel exhaustion is awesome.

Cheers B Lo
Attached files Thumbnail(s):
My first RC pulse jet
My first RC pulse jet
My first RC pulse jet
My first RC pulse jet
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dputt7
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« Reply #1 on: April 13, 2015, 07:05:43 AM »

Welcome to Hippockets, any chance of a video it looks very purposeful.  Shocked
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OZPAF
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« Reply #2 on: April 13, 2015, 08:59:17 PM »

I second a flight video if possible. It would be a sight to see.
Good luck.
John
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applehoney
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« Reply #3 on: April 13, 2015, 10:34:54 PM »

With sound, of course....
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B Lo
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« Reply #4 on: April 14, 2015, 04:23:40 AM »

Hi Troops,
              I don't have any flight videos as yet, only two short one of the first takeoffs. Not sure on how to load them on this site, so will try and get them on You Tube and provide a link.

Cheers B Lo
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B Lo
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« Reply #5 on: April 14, 2015, 08:25:14 AM »

Here you go, the first take off.

https://www.youtube.com/watch?v=l0vXrT6NKow

Cheers B Lo
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PeeTee
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« Reply #6 on: April 14, 2015, 08:45:30 AM »

Excellent thanks! (but I don't think I'll buy one for free flight Roll Eyes)
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OZPAF
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« Reply #7 on: April 14, 2015, 08:51:46 PM »

Fast taxi out to the strip Grin Thanks for the video.

John
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Dan Ogle
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« Reply #8 on: April 14, 2015, 09:13:23 PM »

 Now thats just nest Grin
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