I added features like mountains and buttes to make flight about this fictitious world or orbit around it more difficult. I added a ground radar which acts like a depth finder on a board a ship to warn you of low altitude. You can also use ground radar to make a rough map of planet.
Future Ion engines may be able to escape the gravity of or at least control orbit of drawf planets like Pluto.
Acceleration, Gravity, and Equatorial(Latitude = 0) Orbit of Pluto size Drawf Planet.
Acceleration: This simulation allows you to move about above ground in a 2 dimensional space (vacuum) in a ion propelled imaginary space ship. The Acceleration of gravity is 0.658 meters per second per second downward (-Y direction). Gravity is balanced by centrifugal force when a velocity above 2000 meters per second is achieved. Type in the ship orientation (recommend 22 degress initially) force direction) and thrust duration of 22 seconds, and then click ENTER button. This enters desired course and duration into the spaceship ion propulsion engine control computer. The computer uses the accelerometer sensor inputs to regulate thrust so as to maintain desired acceleration. Engine burn does not begin and Time does not change until an Engine Control Button is clicked. The STOP ENGINE button advances time by an amount specified (Thrust Duration as entered) at zero thrust and zero fuel consumption. During the stop engine period the spaceship will be in freefall, and it will continue to move under the influence of gravity (-0.658 M/S/S ).
Start by launching the spaceship (0 - 90 degrees) at full thrust for a period of 33 seconds and then press STOP Engine several times observing freefall motion of spaceship. After the spaceship is well into its descent start using a combination of Engine burns( SLOW, Full Speed Ahead) and Freefalls (STOP Engines) to land safely or to achieve orbit. A safe landing speed of 4 meters per second would be reasonable. You can set your goal (game rules) if you wish. The game stops when Ground Radar Elevation goes negative. Practice landing or achieving orbit with a minimum of fuel usage. An alert message indicates ground impact.
Note: Ship Orientation and Course are independent of each other.
Activities and Games:
GRAY = PLANET SURFACE (GROUND IMPACT, GAME OVER)
1.0 Fly (free fall) over planet and use Grand Radar to map surface. (Find exact longitudes and altitudes of surface features.)
2.0 Fly above and dive into surface feature.
3.0 Fly above and then land on surface feature
4.0 Put spaceship in level orbit around planet. Travel more than 360 degrees using only STOP ENGINE control. Use a combination of math and intuition travel to achieve orbit. Don't over think it or calculate orbit. Remember I just added centrifugal force to a flat earth simulation to mimic flight around the equator of a spherical planet.
FOR A TRUE EDUCATIONAL SIMULATION OF NEWTON'S LAWS WITH VARIABLE GRAVITY GO TO DEEP SPACE NORTH!