2025 Speed Challenge - Telnar1236

telnar1236

Elite member
Sounds really cool! BTW do you think it would fly with a 64mm if scaled up? (I am hoping to get my own 3D printer this fall...)
The new version will be designed around a 64mm fan right from the beginning. It's just a nicer size of fan to work with and with how much I like the Saab 105 with the extra power from the 70mm fan, I have the Powerfun 64mm fan I was originally going to use in that sitting around again.

For the speed plane version (50 mm), if you want to try and put a 64mm fan in it and fly it, I don't really see any issues with scaling it up, though that comes with the caveat that it was a handful even as the original 50mm plane. The only issue might be the elevon torque tubes which use 3mm carbon fiber rods, which would need to be 3.84mm carbon fiber rods in a 64mm scaled version. Nothing insurmountable, though.
 

Zoom Master

Elite member
It's definitely a cool design. I'm skeptical if they'll achieve their listed performance goals but at the very least it should be very fast. You can definitely see how it's derived from their original supersonic concept with the delta wing and inlet design.
They probably will be able to reach 500 mph but they def wont be able to go supersonic but a cool airplane and a even cooler project nonetheless...
 

Zoom Master

Elite member
This doesn't relate to anything but I thought this was interesting so I decided to share it. Bruno Stükerjürgen recently set the world record for the worlds fastest edf jet with a speed of 492.375km/h or 305.94 mph.
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Piotrsko

Legendary member
Hmmm looks like a GRYPHON. YUPPA fast plane back in the day.

Breaking the sound barrier is a lot like flting between powerline wires. When you do it correctly, it is cool, if not you get baggies of balsa
 

Mr Man

Mr SPEED!
Breaking the sound barrier is a lot like flting between powerline wires. When you do it correctly, it is cool, if not you get baggies of balsa
Partly because you;ve either got to go faster than the speed of sound, or the plane’ll shake itself apart.
 

Zoom Master

Elite member
Partly because you;ve either got to go faster than the speed of sound, or the plane’ll shake itself apart.
Maybe this is wrong but I think that...a plane that shakes itself apart at supersonic speeds would have done so long before it has gone supersonic...
 

Zoom Master

Elite member
Hmmm looks like a GRYPHON. YUPPA fast plane back in the day.

Breaking the sound barrier is a lot like flting between powerline wires. When you do it correctly, it is cool, if not you get baggies of balsa
Seems like it is a gryphon.....but thats probably the last interesting thing about this airplane what is more interesting is that edf on that airplane.I didnt even know edfs could go 300 mph before seeing this airplane.
 

Zoom Master

Elite member
I meant as it approaches supersonic speed, insane vibrations occur, even in full scale.
True thats why I watch these high speed aircraft projects with such interest because there are just so many issues you face when you get to those speeds and I wanna see how they solve those issues. Stuff like insane vibrations is probably one of few reasons why the mach initiative decided to reduce their target speed from around 610 mph to 500 mph.
 

L Edge

Legendary member
Hand launching is definitely a difficult skill for these faster planes
Another approach that you can use is have 2 modes(launch and fly) where you put in (X) number of degrees of elevator in launch and you chuck it.
As it gathers speed, then flip to other mode (elevator 0 degrees) to do flight. I did that when I designed my flying wing with 64MM EDF that has no gear, until I solved my problem.