Optimum Launch Mass of a Single Stage Model Rocket - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: HP Prime Software Library (/forum-15.html) +--- Thread: Optimum Launch Mass of a Single Stage Model Rocket (/thread-18781.html) |
Optimum Launch Mass of a Single Stage Model Rocket - cdeaglejr - 09-08-2022 04:12 PM For a given model rocket engine and aerodynamic characteristics, this HP Prime program determines the optimal launch mass of a single-stage model rocket which maximizes total altitude (Bengen's maxima). The data required for this program is provided by the user using the following example of "hard-wired" information. Please note the proper units of each input. // launch site altitude (meters) altsite := 100.0; // launch site temperature (degrees f) tempsite := 70.0; // thrust duration (seconds) tduration := 1.2; // total impulse (newton-seconds) impulse := 5.0; // propellant mass (grams) mprop := 8.33; // reference diameter (millimeters) fdia := 18.0; // drag coefficient (non-dimensional) cd := 0.321; |