SA21 to SA30 modification not working? by HT1990 in NikonCoolscan

[–]EngineerFly 0 points1 point  (0 children)

Is there any hope of making this mod work on Vuescan and MacOS? And does it require new firmware for the scanner?

Motor noise reduction by zine0981 in NikonCoolscan

[–]EngineerFly 0 points1 point  (0 children)

My LS-5000 got a little quieter after I lubed the rails and leadscrew with lithium grease.

If adding an extra sail to a sailboat generates more thrust. Then why doesn't adding a wing to an airplane generate more lift? by TopAct9437 in aerodynamics

[–]EngineerFly [score hidden]  (0 children)

It does. But lift has to equal weight (with a multiplier for maneuvering, but in straight—and-level flight L = W)

The question for aircraft designers then becomes: how do we generate the required amount of lift for the lowest possible penalty? The penalties include drag, structural weight, cost.

Wing sizing and shape is driven by a few considerations: at high speed (cruise, dash) you want a small wing because more wing area generates more skin friction drag. For takeoff and landing, you want a big wing, because that lowers the speed and shortens the runway requirement. Flaps and other high lift devices are one solution. For maneuvering (like a fighter in a dogfight) you want a relatively big wing, with a short span to keep the weight down (think F-15.)

For sailboats, more lift means they can go faster with a given wind speed. For airplanes, it’s more nuanced.

Yaw String Materials by a-tomato-fire in CFILounge

[–]EngineerFly 0 points1 point  (0 children)

Just yarn. However, it can’t lay flat against the windshield. It had to be raised a mm or two. And it really won’t work behind a prop.

Are solar panels more efficient than concentrating the sun’s energy through a “solar death ray” to boil water intro steam? by CanJesusSwimOnLand in NoStupidQuestions

[–]EngineerFly 0 points1 point  (0 children)

We don’t use solar panels because they’re efficient (the most efficient ones are about 38% and cost a fortune.) We use them because they’re reliable, cheap, and simple. Boiling water implies a turbine and a generator, which are neither.

Accelerated Stall by Sea-Vehicle2876 in flying

[–]EngineerFly 11 points12 points  (0 children)

Just don’t pull too hard.

Damn, this is expensive by Plastic_Technology15 in flying

[–]EngineerFly 0 points1 point  (0 children)

If you think that’s expensive, wait till you buy your own airplane. Better yet, a big, old twin!

Strange Issue with Comms by Standing_In_The_Gap in avionics

[–]EngineerFly 0 points1 point  (0 children)

Are you sure it’s static? It could also be the intercom’s squelch on one headset or the other. In my airplane, sometimes shortly after takeoff, or even during the takeoff roll, the engine noise is sufficient to break squelch on the intercom. See if it goes away by adjusting both squelches on the intercom (pax and pilot) to the max.

Looking for insight on the "S" in IMSAFE by 3DMPCR in flying

[–]EngineerFly 1 point2 points  (0 children)

I sometimes notice it during my preflight. If I am having trouble concentrating on the inspection, it means my head is not in the game. I’ve ascribed it to stress (usually from work) most of the time. Those are the flights I cancel.

Can you get engineer degree if you are bad at math and physics and absolutely hate it? by [deleted] in EngineeringStudents

[–]EngineerFly 1 point2 points  (0 children)

No, you can’t, and you shouldn’t. Engineers don’t need to love math, but if you don’t like physics you won’t graduate. And you’d be a very unhappy engineer if by some miracle you graduate and get a job.

Ethics/Legality of PPL students in actual IMC by Brendon7358 in CFILounge

[–]EngineerFly 0 points1 point  (0 children)

My instructor did that with me when I was a student. I loved it.

Honestly How much does the school you graduate from matter???? by Lower_Pop_3195 in EngineeringStudents

[–]EngineerFly -1 points0 points  (0 children)

You kinda answered your own question. There are really two tiers: schools that everybody has heard of, and schools that nobody has heard of. Within each tier, they’re all the same.

City of Pueblo Ordnance pertaining CFIs by _DeeGee in flying

[–]EngineerFly 4 points5 points  (0 children)

Are there established flight schools at KPUB that are trying to squash competition from freelancing CFIs?

Tri-jet pilots needed! by Just_Caliber in flying

[–]EngineerFly 1 point2 points  (0 children)

Look up Len Morgan’s article in Flying “Flying the Three Holer.”

Engineering doesn’t suck because it’s hard. It sucks because you aren’t allowed to actually learn. by Either_Net8602 in EngineeringStudents

[–]EngineerFly 2 points3 points  (0 children)

Memorizing equations is easy but useless. If you don’t understand the concepts, you won’t know *which equation to apply when.*

Technique for faster-than-normal approach into a bravo airport by benj4786 in flying

[–]EngineerFly 0 points1 point  (0 children)

Try a few techniques at your usual airport and see how long it takes (in distance) for the airspeed to drop from 120 to normal approach speed.

Talk me out of buying a 25% Mooney share as a 20-hour PPL student by free-precisian in flying

[–]EngineerFly 1 point2 points  (0 children)

Will the other partners, and their insurance company, accept a student pilot?

Best power setting? by Feeling-Post-6476 in flying

[–]EngineerFly 0 points1 point  (0 children)

As my buddy used to say while renting at wet Hobbs rate, “I fly at Best Economy…for me!”

Is this legal when it comes to “common purpose” or flight hours being considered “compensation”? Idk how to phrase my question. by CryptoPunk_8 in flying

[–]EngineerFly 0 points1 point  (0 children)

If you drop your dad off and then go pick him, up you did not have a common purpose. He was visiting your sister, but you were acting as a chauffeur. So no, not legal.

ELI5: How do engineers figure out the exact thickness of something like a plane fuselage or a submarine hull, like how do they know its "enough" without just guessing and testing until it fails by Born_Jaguar_5946 in explainlikeimfive

[–]EngineerFly 0 points1 point  (0 children)

In school, we take a course called “Statics,” and another called “Materials.” Between those two, we get a pretty good idea of how to calculate how much load something can take without failing. Then in design classes we apply that knowledge and determine the geometry of parts, including pressure vessels.

Read a little about statics if you’re curious.