what is the meaning of these words you use "climb" and "cruise" ? And how might they apply to the subject of this thread ?

what is the meaning of these words you use "climb" and "cruise" ? And how might they apply to the subject of this thread ?

sorry to be so obtuse
more clearly - have you seen any indication that the aircraft is capable of climbing to even a cropduster's cruise altitude ?

Air-to-air refilling with cold coolant every 1000 feet.

As currently configured, a Cessna 152 beats the Great White Whale in take off distance, ROC, cruise speed, fuel burn, full fuel useful load, range, maintainability and acquisition cost. The Cessna does have higher direct operating costs because.....well, you can actually fly it to places other than the second runway at your departure airport.

Where I grew up there were no hills but there was always a strong headwind to and from school (just like when I go flying).

what is the meaning of these words you use "climb" and "cruise" ? And how might they apply to the subject of this thread ?

I disagree. When the divisor (distance) is near zero the quotient (cost per mile) gets pretty big.

Getting this thing in the air might have been the easy part Keeping it in the air looks like it will be the hard part. Particularly keeping it in the air long enough to verify numbers. The guy has 10 gal of gas, on board and is running at 90+MPH down the runway and the thing looks glued to the ground. The takeoff roll alone is enough to make me go...

Also please know that 3 years ago I was seriously considering putting down a deposit. So I am not just trying to run Peter or this project down. Bottom line is he tried to do to much all at once and now he has what he has.

How about a “boil-off” cooling system like the Galloping Ghost that crashed at Reno? That might be enough to get him around the pattern.....once.

Isn’t he planning on pulling it back to 50% power once he gets airborne? Assuming it doesn’t oscillate in pitch and roll again. I don’t think he has much time to do much except do a pattern lap. “Performance” will be not falling out of the sky. With him not really wanting to address the cause of the heating issue, it looks like he just wants to get it flying well enough not to scare him and go straight into production out West.

This.

Everyone who's using the impracticality of his Rube Goldberg approach are missing the point. He isn't trying to fix this airplane, he's approaching this build as a test bed that he's using to learn what he needs to change for the next build which will be the production prototype. I mean, it works for SpaceX, it should work for the Raptor, right?

This.

Everyone who's using the impracticality of his Rube Goldberg approach are missing the point. He isn't trying to fix this airplane, he's approaching this build as a test bed that he's using to learn what he needs to change for the next build which will be the production prototype. I mean, it works for SpaceX, it should work for the Raptor, right?

This.

Everyone who's using the impracticality of his Rube Goldberg approach are missing the point. He isn't trying to fix this airplane, he's approaching this build as a test bed that he's using to learn what he needs to change for the next build which will be the production prototype. I mean, it works for SpaceX, it should work for the Raptor, right?[/quote]
And the cup holders are the cat’s a$$, no redesign required there. So, he already has a big head start on the next prototype.
Seriously, how do you build the next one with the needed changes when you didn’t make any meaningful changes to this one to determine what is needed?[/quote]

Wrong! If he uses angle iron redesigning them, he can add 3 lbs to the weight.

You can make a lot more power than expected from diesel engines if you know what you are doing. In Europe there is a truck racing league. Earlier in my career I was a bit involved in these engine mods. In America there is a truck pikes peak race, same thing.

It's amazing what you can get out of some of these engines when the manufacturer turns a few engineers loose with no rules. 350HP road engines making 1500HP....for awhile.

It's fun. Fun to build. Fun to run the engine on a dyno. Fun to figure out what caused a failure. Fun to watch the races.

But I would NOT find it fun to fly behind such an engine.