# HP Forums

Full Version: (41CV) Helicopter High Speed Flight Analysis
You're currently viewing a stripped down version of our content. View the full version with proper formatting.
An extract from Computer Programs for Helicopter High Speed Flight Analysis, Waldo F. Carmona (CPT USAR), Naval Postgraduate School, Master's Thesis, SEP 1983, 137 pages

"ABSTRACT
This report gives the user of the HP41-CV handheld programmable calculator or the IBM 3033 computer, a blade element method for calculating the total power required in forward, straight and level high-speed flight for an isolated rotor. The computer programs consist of a main program which calculates the necessary dynamic parameters of the main rotor and several subroutines which calculate power required as well as maximum forward velocity, stall onset velocity, and velocity for best endurance.

APPENDIX B … 47
B. QUICK REFERENCE TABLES … 50
1. HP41-CV Displays … 51
2. HP41-CV Register Utilization … 53
C. PROGRAM DOCUMENTATION … 55
1. Main Program … 56
2. Solidity … 64
3. Downwash Velocity … 66
U. Coefficient of thrust … 53
5. Induced Power … 70
6. Profile power … 73
7. Parasite Power … 75
8. Maximum Forward Velocity … 77
9. Best Endurance Velocity … 80
10. Stall Onset Velocity … 32
11. Inflow Ratio … 35
12. Angle of Attack at 90 Degrees … 88
13. Compressibility Power … 91
14. Stall Power … 94
15. Total Power … 97
16. Density/Sonic Velocity … 99
17. Change … 101
D. HP 41-CV SAMPLE OUTPUT … 104

_5. PROGRAMS AND SUBROUTINES
This section lists all the programs or subroutines which must be present in the HP 41-CV prior to program execution .
_6. PROGRAM LISTING
This section contains the HP 41-CV listing of the program or subroutine.
3. QUICK REFERENCE TABLES
The tables in this section will be useful to the user of the HP 41-CV handheld calculator as a source of quick rafaranca. Table 1 is an alphabetical listing of all calculator displays with an explanation of their respective meaning. Table 2 lists all storage registers used and describes how they are utilized."

BEST!
SlideRule
alternate URL
Reference URL's
• HP Forums: https://www.hpmuseum.org/forum/index.php
• :