853-21 Quiet Bird by Foamy DM

[FoamyDM]

One of my next design projects are the 853-21 Quiet Bird.
This a Paper model:



Boeing Model 853-21 Quiet Bird in Test Lab
The Quiet Bird was a version of the Boeing Model 853 which started out as an Army observation airplane study, this version of the 853 study was used to test materials and shapes that would reduce radar cross sections (RCS). The model was built and tested in 1962- 1963 at Boeing Wichita, these test were on a radar range and no actual flight testing was done. The tests reportedly achieved excellent results in reduced radar cross section, but it was a bit ahead of its time and did not generate interest from the military. The lessons learned on Quiet Bird probably did influence the design of the Boeing AGM-86 Air Launched Cruise Missile. Internally Boeing continued to work on the non-metallic structures aspects that were pioneered with Quiet Bird, and that effort eventually lead to the use of increasingly larger and more complex composite structures in Boeing aircraft.

I am using this to build an Onshape based Model to make a model to turn into a shaped cut file:
Here is where I am at today

This should be a fun journey.

 

[L Edge]

Are you using an EDF or the 3 bladed prop shroud setup?
Now that Stealth is involved, sure changes requirements of EDF design, not so much with this one, tuff with dual setups. Especially with NGAD with no rudders. The exhausts are crazy(F-117).

 

[FlyerInStyle]

One of my next design projects are the 853-21 Quiet Bird.
This a Paper model:
View attachment 239906


Boeing Model 853-21 Quiet Bird in Test Lab
The Quiet Bird was a version of the Boeing Model 853 which started out as an Army observation airplane study, this version of the 853 study was used to test materials and shapes that would reduce radar cross sections (RCS). The model was built and tested in 1962- 1963 at Boeing Wichita, these test were on a radar range and no actual flight testing was done. The tests reportedly achieved excellent results in reduced radar cross section, but it was a bit ahead of its time and did not generate interest from the military. The lessons learned on Quiet Bird probably did influence the design of the Boeing AGM-86 Air Launched Cruise Missile. Internally Boeing continued to work on the non-metallic structures aspects that were pioneered with Quiet Bird, and that effort eventually lead to the use of increasingly larger and more complex composite structures in Boeing aircraft.
View attachment 239900 View attachment 239901 View attachment 239902 View attachment 239903 View attachment 239904 View attachment 239905
I am using this to build an Onshape based Model to make a model to turn into a shaped cut file:
Here is where I am at today View attachment 239907

This should be a fun journey.

would this be hotwire cut? otherwise, how would you turn it 2d? So far looking good though

 

[FoamyDM]

I think I can do this justice with master series style molded foam board. I want to use this though to also try out hot wiring a wing.

The plans I produce will have a foldover style wing.

 

[Hogwerks]

I just gave a delayed update on my Quiet Bird 3D print attempt...spoiler alert: The inlets don't suck in the right way!