Post Reply 
Performance of a Single Stage Model Rocket
09-04-2022, 12:55 PM (This post was last modified: 09-05-2022 06:15 PM by cdeaglejr.)
Post: #1
Performance of a Single Stage Model Rocket
For a user-defined rocket engine, aerodynamic characteristics and launch site conditions this HP Prime program determines the flight performance of a single stage model rocket.

Program inputs
altitude at launch site (meters)
temperature at launch site (degrees F)
thrust duration of rocket engine (seconds)
total impulse of rocket engine (newtons)
rocket engine propellant mass (grams)
frontal diameter of rocket (millimeters)
drag coefficient of rocket (non-dimensional)

Program output
burnout altitude (meters)
burnout velocity (meters per second)
burnout mass (grams)
coast time (seconds)
total flight time (seconds)
maximum altitude (meters)

EXAMPLE INPUT (Estes B-4 rocket engine)

// launch site altitude (meters)

alt_site := 100.0;

// launch site temperature (degrees F)

temp_site := 70.0;

// rocket engine total impulse (newtons-second)

total_impulse := 4.29;

// rocket engine thrust duration (seconds)

thrust_duration := 1.03;

// rocket engine propellant mass (grams)

mprop := 6.0;

// initial vehicle mass (grams)

massi := 40.0;

// frontal diameter (millimeters)

fdiameter := 18.0;

// drag coefficient (non-dimensional)

cdrag := 0.321;

Attached File(s)
.zip (Size: 514.06 KB / Downloads: 9)
Find all posts by this user
Quote this message in a reply
Post Reply 

User(s) browsing this thread: 1 Guest(s)