# gtae07's Recent Activity

1. ### gtae07 liked Toobuilder's post in the thread Raptor Composite Aircraft.

Agreed. I would LOVE to see his radical advances in efficiency succeed - it would boost aviation sales and interest ( both good...

Sep 20, 2019 at 10:28 PM
2. ### gtae07 liked Hephaestus's post in the thread 3D printing in the Homebuilt world..

Water/airtight I've got a profile tweaked from a TPU profile - no retraction, inside out, slight overextrusion, minimal cooling. And...

Sep 20, 2019 at 9:05 PM
3. ### gtae07 replied to the thread If you were in charge of Raptor....

No, 787 only uses bleed air to prevent surge and (I think) cowl deicing. Leading edge deice and pressurization are powered electrically.

Sep 20, 2019 at 9:39 AM
4. ### gtae07 replied to the thread 3D printing in the Homebuilt world..

We've 3d printed vacuum boxes for doing small composite repsirs at work. At least using the makerbot, we had to print full infill and...

Sep 20, 2019 at 9:35 AM
5. ### gtae07 replied to the thread If you were in charge of Raptor....

Yeah, I’m assuming a source of bleed air (among other things, I troubleshoot bleed air and ECS systems at work, so that plus a Founder’s...

Sep 20, 2019 at 12:47 AM
6. ### gtae07 replied to the thread If you were in charge of Raptor....

That’s exactly what an air cycle machine does... cool the incoming sir, compress it, cool it again, and expand it through a turbine...

Sep 20, 2019 at 12:15 AM
7. ### gtae07 replied to the thread O-470 in an RV-8.

That’s my plan. The composite props look beautiful but the cost is something like 50% greater. Were I the OP, I’d sell the 470 and...

Sep 19, 2019 at 10:48 AM
8. ### gtae07 replied to the thread If you were in charge of Raptor....

Air cycle machines are ingenious... they take in hot high pressure air(~400F at 30-40psi nominally for our systems) and use that heat...

Sep 19, 2019 at 10:41 AM
9. ### gtae07 liked jedi's post in the thread If you were in charge of Raptor....

This is not my cup of tea so I have not followed the blog closely. My answer may be tainted but my opinion is very real. I would look...

Sep 19, 2019 at 10:32 AM
10. ### gtae07 liked Dana's post in the thread The Real Accident Rate.

At the grass roots level, I think the general attitude is to not tell the government anything they don't have to know, and an even...

Sep 18, 2019 at 12:46 PM
11. ### gtae07 replied to the thread 3D printing in the Homebuilt world..

I have an Ender 3 and it's done well for my purposes so far. Under $200 shipped and prints better and more reliably than the$6000...

Sep 17, 2019 at 10:31 PM
12. ### gtae07 liked BJC's post in the thread Easy CAD software for modest requirements: Fusion 360? Other?.

We gather around the fire pit every Friday morning for coffee, and we have developed solutions for all the nation’s problems; all we...

Sep 17, 2019 at 10:51 AM
13. ### gtae07 liked Pops's post in the thread Flight Instructor issues.....

I have had carb ice with a Lyc. I use carb heat with a LYC the same as a Cont. Develop good habits.

Sep 17, 2019 at 10:49 AM
14. ### gtae07 liked Topaz's post in the thread Easy CAD software for modest requirements: Fusion 360? Other?.

My stepdaughter is now 22, and since her generation would single-handedly solve the world's problems if we "old people" would just get...

Sep 17, 2019 at 1:11 AM
15. ### gtae07 liked BJC's post in the thread Don't really know what to do from here....

There are some people (from my younger years - too late now) that I definitely owe an apology to. BJC

Sep 16, 2019 at 9:14 PM