Jump to content

Hypersonic electric propeller plane (Stock)


Recommended Posts

Hi all,

I've been away for a while - work, travel & life all conspired to keep me away from Kerbin. I have now returned, and decided to revisit my Spinner M2 craft.

I am trying to better understand how these rotors function as speed increases. Aside from craft modifications, I used the console to tweak the lift/drag ratio setting.

The result is Spinner (pictured below) reaching a hypersonic speed of Mach 5. 

While this is not strictly stock as the lift/drag ratio setting has been changed, it shows that there is room for improvement beyond the Mach 2.1 speed this craft achieved last year.

While typing this post, Spinner continued to accelerate and is currently flying at Mach 5.4 at 17,500m. It's still climbing. I will leave it flying and see what happens. (Update: it exploded before reaching Mach 5.5)

Some observations:

  • Spinner achieves top speed with its rotors turning at approximately 470 RPM. Slower and it can't accelerate, faster and it explodes.
  • The RPM is modulated by changing the blade authority limiter in flight. To do this you have to switch to the props using [ ] and then left-click on the blades.
  • At speeds over Mach 5 the authority limiter of the blades is set to 0.

 

 

Spinner rushes into a new dawn approaching Mach 5

wBAoQvA.jpg

 

Spinner accelerates past Mach 5 while still climbing.

qIlRJTm.jpg

Link to comment
Share on other sites

This thread is quite old. Please consider starting a new thread rather than reviving this one.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...