The Museum of HP Calculators


Straight Fin Efficiency for the HP-41C/CV/CX

This program is Copyright © HP and is used here by permission. It was originally printed in the Chemical Engineering Solution Book. This program was entered and uploaded by Tony Duell.

This program is supplied without representation or warranty of any kind. Tony Duell, Hewlett Packard and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

Documentation Information (CD or source code)
How to get this Program to your Calculator (via HP-IL, disk, wand, and fingers)
Download Binary (.raw) program for disk or PC HP-IL Card download
Download Hexadecimal (.dat) program for Serial Port download

Program Listing

LINE  KEYS
 01 LBL "FIN"
 02 FIX 02
 03 DEG
 04 "H?"
 05 PROMPT
 06 STO 03
 07 "K?"
 08 PROMPT
 09 STO 02
 10 "X?"
 11 PROMPT
 12 2
 13 /
 14 STO 01
 15 "L?"
 16 PROMPT
 17 STO 04
 18 RCL 01
 19 +
 20 SQRT
 21 LASTX
 22 *
 23 RCL 03
 24 RCL 02
 25 /
 26 RCL 01
 27 /
 28 RCL 04
 29 /
 30 SQRT
 31 *
 32 STO 07
 33 E^X
 34 ATAN
 35 ENTER
 36 +
 37 90
 38 -
 39 SIN
 40 RCL 07
 41 /
 42 STO 05
 43 "NF="
 44 XEQ d
 45 LBL A
 46 "NA?"
 47 PROMPT
 48 STO 06
 49 RCL 01
 50 ENTER
 51 +
 52 *
 53 1
 54 X<=Y?
 55 0
 56 /
 57 "DELTA T?"
 58 PROMPT
 59 RCL 04
 60 RCL 01
 61 +
 62 ENTER
 63 +
 64 RCL 06
 65 *
 66 RCL 05
 67 *
 68 RCL 01
 69 ENTER
 70 +
 71 RCL 06
 72 *
 73 CHS
 74 1
 75 +
 76 +
 77 *
 78 RCL 03
 79 *
 80 "Q="
 81 LBL d
 82 ARCL X
 83 AVIEW
 84 STOP
 85 RTN
 86 END

Go back to the HP-41 software library
Go back to the general software library
Go back to the main exhibit hall