Launching Dialog
- Last UpdatedDec 17, 2025
- 2 minute read
Selecting the Miscellaneous - Launching icon, and then the Edit command in the sub-menu, opens the Launching dialog.
Launching Dialog
This dialog allows you to enter all the required data to perform launching calculations. Note that the Dynamic Data section of the dialog only requires data if the Dynamic Launching check box is selected.
The basic launching parameters that must be entered are:
|
Parameter |
Units |
Figure Notation (refer to Launching Paramters image) |
|---|---|---|
|
Length of fixed ways |
meters or feet |
LFW |
|
Camber |
meters or feet |
C |
|
Tangent of the chord of the ways |
none |
|
|
Tangent of the keel |
none |
|
|
Height of water at way ends |
meters or feet |
WH |
|
Keel height above chord at AP |
meters or feet |
KH |
|
Distance of AP from way ends |
meters or feet |
D2 |
|
Launch weight |
tonnes or tons |
|
|
LCG from AP |
meters or feet |
|
|
Travel interval |
meters or feet |
|
|
Length of sliding ways |
meters or feet |
LSW |
|
Width of sliding ways |
meters or feet |
|
|
Fore poppet pivot point from AP |
meters or feet |
D1 |
Launching Parameters.
For dynamic launching, these further parameters must be entered:
|
Parameter |
Units |
Limits |
|
Available travel before rest |
meters or feet |
Length of fixed ways to 15000 |
|
Water resistance coefficient |
none |
0.000 to 0.015 |
|
Grease friction coefficient |
none |
0.000 to 0.06 |
|
Drag coefficient |
none |
0.300 to 1.000 |
Note:
The Drag coefficient is the coefficient of friction of the drag chains.
For the drag chains, the travel at which the drag chains start to take effect, Start(m) (units: meters or feet) and their Weight (units: tonnes or tons) are displayed in a list. To add new items, enter the required values in the entry fields and click Add.