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Search: Posts Made By: AeroEngineer
Forum: RV-15 09-10-2021, 01:23 PM
Replies: 234
Views: 33,166
Posted By AeroEngineer
I vaguely remember having seen something like...

I vaguely remember having seen something like that, so I did some quick Googling.

Rich Stowell generated the following graph from data off an SAE study about light plane crashworthiness. More...
Forum: RV General Discussion/News 08-26-2021, 07:50 AM
Replies: 45
Views: 3,967
Posted By AeroEngineer
Ha! I was wondering why you didnít show your work...

Ha! I was wondering why you didnít show your work ;)



Yeah but could he do it from the comfort of his couch while wearing his pajamas?



Ha! That might be trueÖ if everyone agreed to respect...
Forum: RV General Discussion/News 08-25-2021, 10:46 PM
Replies: 45
Views: 3,967
Posted By AeroEngineer
I concede defeat ;) David asked for a “back of...

I concede defeat ;) David asked for a “back of the napkin” estimate, and that’s what I delivered (including a link to some turbulent flow equations in case anyone felt like being any less lazy than...
Forum: RV General Discussion/News 08-25-2021, 04:39 PM
Replies: 45
Views: 3,967
Posted By AeroEngineer
There are two stages to the flow here. During the...

There are two stages to the flow here. During the first stage, there is some pressure loss (due to viscosity a.k.a. friction) and the air comes out the tube at some lower pressure than it went in but...
Forum: RV-4 08-24-2021, 12:06 PM
Replies: 18
Views: 2,451
Posted By AeroEngineer
I think it's realistic IF you're willing to fly...

I think it's realistic IF you're willing to fly with a very lightweight (and new and expensive) engine, and to significantly extend the engine mount and cowling in order to get the CG in the right...
Forum: RV-4 08-06-2021, 12:31 PM
Replies: 7
Views: 1,029
Posted By AeroEngineer
Is the 160hp FP prop a climb prop or a cruise...

Is the 160hp FP prop a climb prop or a cruise prop? What is the pitch on the blades?

If it's a climb prop, then the 160hp FP will accelerate and climb better than the 150hp CS but will need more...
Forum: RV-15 08-03-2021, 10:41 AM
Replies: 12
Views: 3,172
Posted By AeroEngineer
On the one hand, you gotta admit that adding CO2...

On the one hand, you gotta admit that adding CO2 to the atmosphere (i.e. being a part of the process that is wrecking the planet for future generations) just for fun is at least somewhat morally...
Forum: RV-10 07-23-2021, 07:40 AM
Replies: 6
Views: 972
Posted By AeroEngineer
Iíd go with full flaps. More flaps will always...

Iíd go with full flaps. More flaps will always reduce the stall speed (and - as others have said - will allow you to fly with less of a nose-up attitude). Yes, they will also increase the drag, but...
Forum: RV-3 07-18-2021, 04:46 PM
Replies: 18
Views: 1,955
Posted By AeroEngineer
Like Canadian Joy said: If you place the...

Like Canadian Joy said: If you place the batteries to roughly match the weight of the current engine and fuel tanks, then you keep the re-engineering (and re-building time) to a minimum.

But, like...
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