Full scale HotSpot. 4x P-220Rxi
10-15-2018, 06:30 AM
#1
Thread Starter
Full scale HotSpot. 4x P-220Rxi
I’ve been helping Barry on this project for 3 years now, it’s getting very close. Here are some articles from Aviation magazines in the UK. Test flights start next year.
Dave
Last edited by Dave Wilshere; 10-15-2018 at 06:36 AM.
10-15-2018, 10:26 AM
#3
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10-15-2018, 10:28 AM
#4
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Wow!
I would love to hear more details about this project.
Quote from the article:
"Built
entirely from carbon fibre, the structure was
made using the resin fusion process, where
the cloth is laid in the mould dry, with a final
layer of thin mesh known as the flow media.
It’s then vacuum-bagged and the mixed resin
fed in via a pipe, with a tap to control flow."
So I take that to mean he built full size molds for this thing?
If so, I sure would like to see pics of them.
How are the engine controls managed?
Servo drivers connected to each throttle lever controlling stock Jetcat ECU's, or something more exotic?
What batteries is he using to drive the ECU's?
Any details on the fuel system?
More, please!!!
I would love to hear more details about this project.
Quote from the article:
"Built
entirely from carbon fibre, the structure was
made using the resin fusion process, where
the cloth is laid in the mould dry, with a final
layer of thin mesh known as the flow media.
It’s then vacuum-bagged and the mixed resin
fed in via a pipe, with a tap to control flow."
So I take that to mean he built full size molds for this thing?
If so, I sure would like to see pics of them.
How are the engine controls managed?
Servo drivers connected to each throttle lever controlling stock Jetcat ECU's, or something more exotic?
What batteries is he using to drive the ECU's?
Any details on the fuel system?
More, please!!!
10-15-2018, 10:46 AM
#5
Thread Starter
It’s basically servo testers driving the stock ECUs we had to make special looms. There are 4 Mini GSUs in the cockpit so each engine can be monitored.
Haven't decided whether we will run Li-fe or Li-Po batteries, but because the 220Rxi charges once it’s running size is not so important. Since I started flying my Mephisto back in Dec 2017 I have not charged the ECU pack. Even after a 2 month sit it started first time and by the end of the flight was back to 96%
Each turbine in this is independent, the overal weight is critical to the project meeting the UK’s rules and it gives redundancy over one or two units.
Yes, there are moulds, each finished wing panel complete weights less than 15kg.
Dave
its a single tank around 30 ltrs
Haven't decided whether we will run Li-fe or Li-Po batteries, but because the 220Rxi charges once it’s running size is not so important. Since I started flying my Mephisto back in Dec 2017 I have not charged the ECU pack. Even after a 2 month sit it started first time and by the end of the flight was back to 96%
Each turbine in this is independent, the overal weight is critical to the project meeting the UK’s rules and it gives redundancy over one or two units.
Yes, there are moulds, each finished wing panel complete weights less than 15kg.
Dave
its a single tank around 30 ltrs
Last edited by Dave Wilshere; 10-15-2018 at 10:49 AM.
10-15-2018, 11:23 AM
#7
Thread Starter
Once it gets to cruise speed we calculate 15+
When he started this I said I wouldn’t want to be out of sight of the airfield! Bit like when JetMan Richard Browning started talking to me I thought, crazy guy...but without these people life would be boring!
I’ll keep you all posted.
When he started this I said I wouldn’t want to be out of sight of the airfield! Bit like when JetMan Richard Browning started talking to me I thought, crazy guy...but without these people life would be boring!
I’ll keep you all posted.
10-15-2018, 12:57 PM
#8
Just curious as to why 4 220 size engines? I've always known it to be 2x the engines 4x the trouble so 4x the engines 16x the trouble?
with bigger engines easily accessible why not twin AMT Nike's or the jetcat P1000's?
not meaning to sound critical, I just can't imagine using 4 turbines and 4 systems when 2 would work.
It is a very cool project though.
with bigger engines easily accessible why not twin AMT Nike's or the jetcat P1000's?
not meaning to sound critical, I just can't imagine using 4 turbines and 4 systems when 2 would work.
It is a very cool project though.
10-15-2018, 01:56 PM
#9
Thread Starter
Weight. It can’t be over by 100g and be legal to fly.
When the project was started the P220 was the best option, same with Richard Browning.
AMT are super thirsty.
When the project was started the P220 was the best option, same with Richard Browning.
AMT are super thirsty.
10-16-2018, 06:54 AM
#13
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Fantastic..... it reminds both airplanes, HS and the Kangaroo.
Hope to see more of this one, as finally we can do a scale airplane that flies well and is practical too!
Hope to see more of this one, as finally we can do a scale airplane that flies well and is practical too!
