QuantityObserved from Inertial Reference FrameObserved from Ship's Reference FrameChange Velocity
ValueUnitsValueUnits
Ship's Velocity
Ship's Mass
Distance to Destination
One-Way Travel Time
Two-Way Travel Time
Ship's Length
Ship's Density

Suppose a missile with this specification was launched from the ship.Rest Mass
Rest Length
Rest Density
Missile's Velocity
Missile's Mass
Missile's Length
Missile's Density
Definition of used abbreviations

IRF = Inertial Reference Frame
Definition of used abbreviations

SRF = Ship's Reference Frame
Ship's Velocity
This value depict the velocity of the spaceship relative to an IRF, whether it is the planet or system the spaceship depart from, or the destination of the spaceship.

Changing this value will automatically calculate and change the value of :
• Ship's Mass as observed relative to IRF.
• Distance to destination as observed relative to SRF.
• One-Way Travel Time as observed relative to both Reference Frame.
• Two-Way Travel Time as observed relative to both Reference Frame.
• Ship's Length as observed relative to IRF.
• Ship's Density as observed relative to IRF.
• Missile's Velocity as observed relative to both Reference Frame.
• Missile's Mass as observed relative to SRF.
• Missile's Length as observed relative to SRF.
• Missile's Density as observed relative to SRF.
• Ship's Mass
This value depict the mass of the spaceship as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Ship's Mass is changed, the value of SRF Ship's Mass will be calculated and changed.
• If the value of SRF Ship's Mass is changed, the value of IRF Ship's Mass will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF Ship's Mass. The program will change any value related to IRF Ship's Velocity as well.
• Distance to Destination
This value depict the spaceship's Distance to Destination as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Distance is changed, the value of SRF Distance will be calculated and changed.
• If the value of SRF Distance is changed, the value of IRF Distance will be calculated and changed.
• Since the Distance to Destination was changed, the time required for both one-way and two-way journey will be changed as well.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF Distance. The program will change any value related to IRF Ship's Velocity as well.
• One-Way Travel Time
This value depict time required by the spaceship to complete one-way journey, as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF One-Way Travel Time is changed, the value of SRF One-Way Travel Time will be calculated and changed.
• If the value of SRF One-Way Travel Time is changed, the value of IRF One-Way Travel Time will be calculated and changed.
• Since the One-Way Travel Time was changed, the value of both Two-Way Travel Time and Distance to Destination will be changed as well.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF One-Way Travel Time. The program will change any value related to IRF Ship's Velocity as well.
• Two-Way Travel Time
This value depict the time required by the spaceship to complete two-way journey, as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Two-Way Travel Time is changed, the value of SRF Two-Way Travel Time will be calculated and changed.
• If the value of SRF Two-Way Travel Time is changed, the value of IRF Two-Way Travel Time will be calculated and changed.
• Since the Two-Way Travel Time was changed, the value of both One-Way Travel Time and Distance to Destination will be changed as well.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF Two-Way Travel Time. The program will change any value related to IRF Ship's Velocity as well.
• Ship's Length
This value depict the length of the spaceship as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Ship's Length is changed, the value of SRF Ship's Length will be calculated and changed.
• If the value of SRF Ship's Length is changed, the value of IRF Ship's Length will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF Ship's Length. The program will change any value related to IRF Ship's Velocity as well.
• Ship's Density
This value depict the mass density of the spaceship as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Ship's Density is changed, the value of SRF Ship's Density will be calculated and changed.
• If the value of SRF Ship's Density is changed, the value of IRF Ship's Density will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF Ship's Density. The program will change any value related to IRF Ship's Velocity as well.
• Missile's Mass
This value depict the rest mass of the missile launched by the ship.
If this value is changed when "Non-Velocity Auto-Change" button is ON, the values below will be calculated and changed :
• The IRF Missile's Mass.
• The SRF Missile's Mass.
• The calculation will be based on the IRF and SRF Missile's Velocity.
• Missile's Rest Length
This value depict the rest length of the missile launched by the ship.
If this value is changed when "Non-Velocity Auto-Change" button is ON, the values below will be calculated and changed :
• The IRF Missile's Length.
• The SRF Missile's Length.
• The calculation will be based on the IRF and SRF Missile's Velocity.
• Missile's Rest Density
This value depict the rest length of the missile launched by the ship.
If this value is changed when "Non-Velocity Auto-Change" button is ON, the values below will be calculated and changed :
• The IRF Missile's Density.
• The SRF Missile's Density.
• The calculation will be based on the IRF and SRF Missile's Velocity.
• Missile's Velocity
This value depict the velocity of the launched missile as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Missile's Velocity is changed, the value of SRF Missile's Velocity will be calculated and changed.
• If the value of SRF Missile's Velocity is changed, the value of IRF Missile's Velocity will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• Clicking the "VShip" button will calculate the Ship's Velocity relative to IRF, by considering the ratio between IRF and SRF Missile's Velocity.
• The program will change any value related to IRF Ship's Velocity as well.
• Missile's Mass
This value is the mass of the launched missile as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Missile's Mass is changed, the value of SRF Missile's Mass will be calculated and changed.
• If the value of SRF Missile's Mass is changed, the value of IRF Missile's Mass will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• If the "VShip(L)" button is clicked, the program is going to compare the IRF Missile's Mass with the Missile's Rest Mass, and calculate the Ship's IRF Velocity, along with the Missile's IRF Velocity, by assuming that the Missile's SRF Velocity to be constant.
• If the "VShip(R)" button is clicked, the program is going to compare the SRF Missile's Mass with the Missile's Rest Mass, and calculate the Ship's IRF Velocity, along with the Missile's SRF Velocity, by assuming that the Missile's IRF Velocity to be constant.
• Any other value related to the IRF Ship's Velocity, is going to be updated as well.
• Missile's Length
This value is the length of the launched missile as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Missile's Length is changed, the value of SRF Missile's Length will be calculated and changed.
• If the value of SRF Missile's Length is changed, the value of IRF Missile's Length will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• If the "VShip(L)" button is clicked, the program is going to compare the IRF Missile's Length with the Missile's Rest Length, and calculate the Ship's IRF Velocity, along with the Missile's IRF Velocity, by assuming that the Missile's SRF Velocity to be constant.
• If the "VShip(R)" button is clicked, the program is going to compare the SRF Missile's Length with the Missile's Rest Length, and calculate the Ship's IRF Velocity, along with the Missile's SRF Velocity, by assuming that the Missile's IRF Velocity to be constant.
• Any other value related to the IRF Ship's Velocity, is going to be updated as well.
• Missile's Density
This value is the mass density of the launched missile as observed by two observer, one in IRF (left) and and the other in SRF (right).

In case "Non-Velocity Auto-Change" button is ON,changing this value will automatically calculate and change the value of :
• If the value of IRF Missile's Density is changed, the value of SRF Missile's Density will be calculated and changed.
• If the value of SRF Missile's Density is changed, the value of IRF Missile's Density will be calculated and changed.

• In case "Non-Velocity Auto-Change" button is OFF :
• There will be no auto-calculation going on.
• If the "VShip(L)" button is clicked, the program is going to compare the IRF Missile's Density with the Missile's Rest Density, and calculate the Ship's IRF Velocity, along with the Missile's IRF Velocity, by assuming that the Missile's SRF Velocity to be constant.
• If the "VShip(R)" button is clicked, the program is going to compare the SRF Missile's Density with the Missile's Rest Density, and calculate the Ship's IRF Velocity, along with the Missile's SRF Velocity, by assuming that the Missile's IRF Velocity to be constant.
• Any other value related to the IRF Ship's Velocity, is going to be updated as well.