SR71 Nose design help desperately needed. - RC Groups
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Oct 05, 2017, 12:38 PM
Not always grumpy!!
insomaniac45's Avatar
Help!

SR71 Nose design help desperately needed.


Hi guys,

i am in desperate need of some guidance.

i am trying to design a nose for a SR71 blackbird, and i am having one hell of a time of it.

Basically this is as far as i have gotten.


The former is the exact shape required

as you can see, i have the canvas in place for my guide lines.

i have tried to do this on my own, but i just cannot for the life of me seem to make any decent progress.

What do i do?

how do i start to make this?

it only needs to be the outline, as it will be a single wall cone, i can then design in a face, for it to be glues to the fuse.

any help truly appreciated.

BTW im using Fusion360.
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Oct 05, 2017, 01:10 PM
Registered User
dpot's Avatar
first is split it in to quarters then loft it former top side then former lower and serif then join and mirror

can you post the dxf of it
Oct 05, 2017, 01:57 PM
Not always grumpy!!
insomaniac45's Avatar
Dpot, you are a LEGEND.

i have just done 1/4 of the cone, in less than 5 mins.

i have the dxf @

https://www.dropbox.com/s/73tl8chi37...rmer1.dxf?dl=0
Oct 05, 2017, 04:28 PM
Registered User
dpot's Avatar
glad it helped i have been working on sum 3D printed gliders and it drive me up the wall not just drawing it i have to get it to print and sometimes it just will not print in mid air
Oct 13, 2017, 06:41 AM
who has rabbit ears down
Captain Canardly's Avatar
Glad you guys sorted it out! I have a perfect nose for ya!
Oct 13, 2017, 07:12 AM
Registered User
dpot's Avatar
broken lines are the biggest problem when surfing from network of curves
Oct 13, 2017, 07:29 AM
who has rabbit ears down
Captain Canardly's Avatar
fer sure! I hate when the corner intersects are off by 1 of the 8th digit! kinda hard to get a good blend when the (cover) doesn't run!


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