Commuter Airplane design optimization

[Maximilian Hohmann]

Hello!

(11-12-2020 01:23 PM)rprosperi Wrote:  You missed the HP-25 program in section 8. It's an odd program, step 01 is [R/S], but I didn't read the full section to understand operation; maybe there's a reason for that.

I found it now. A little explanation is given on page 138 of the document, but I could not (quickly) find instructions of how to use the program and/or what values need to be entered in which order. The R/S at the beginning seems to make little sense to me. There is a loop but it goes to line 19. Maybe in an earlier version the loop went straigt to line 1? Or whoever programmed this did not have much experience with that calculator.

Anyway, the paragraph about that HP-25 concludes that the simplified calculation is too far off from real-world values to be of any use...

Regards
Max