Differences

This shows you the differences between two versions of the page.

--- drawingboard:fundamentals:hull_shape [2024/05/31 14:00] – tailkinker
+++ drawingboard:fundamentals:hull_shape [2024/06/06 01:34] (current) – [Wings] tailkinker
@@ Line 7: / Line 7: @@
 If your vehicle is a walker of some sort, it will need legs.  You can install as many legs as you want, but there's a big price to be paid for that.
-Half of your vehicle's volume will be given over to its legs.  Divide your volume by two, go back to the Volume table, and look up the new Area and Linear values.  That's for the part of your vehicle that //isn't// legs.
+Half of your vehicle's volume will be given over to its legs.  Divide your volume by two, go back to the [[drawingboard:fundamentals:scale|Volume table]], and look up the new Area and Linear values.  That's for the part of your vehicle that //isn't// legs.
 Then take that volume, and divide it among the number of legs your walker has.  This should be done evenly, as you're going to install the walker drivetrain evenly.  Go to the Volume table, and look up the Area and Linear values for your leg.
@@ Line 41: / Line 41: @@
 **Excellent** Streamlining is normally only found on missiles, rockets or the fastest of airplanes.
-^Streamlining  ^  Factor  ^
+^Streamlining  ^  Factor  ^  Cost  ^
-|None          |    ×1   |
+|None          |    ×1    |   ×1   |
-|Mild          |  ×1.07  |
+|Mild          |  ×1.07   |   ×1   |
-|Moderate      |  ×1.13  |
+|Moderate      |  ×1.13   |  ×1.3  |
-|Good          |  ×1.2   |
+|Good          |  ×1.2    |  ×1.7  |
-|Excellent     |  ×1.25  |
+|Excellent     |  ×1.25   |   ×4   |
 ===== Wings =====
-A certain amount of wing is needed just to get in the air!  Divide your vehicle's mass, in tonnes, by 20, then multiply by the Streamlining Factor from above.  That's the Minimum Wing Area you need to install.  Your main body provides a small amount of lift;  subtract one-tenth your main body's Area from the minimum Wing Area.
+A certain amount of wing is needed just to get in the air!  Multiply your vehicle's mass, in tonnes, by 3.6, then multiply by the Streamlining Factor from above.  That's the Minimum Wing Area you need to install.  Your main body provides a small amount of lift;  subtract one-tenth your main body's Area from the minimum Wing Area.
-Then just add that Minimum Wing Area into your vehicle's total Area.
+Then just add that Minimum Wing Area into your vehicle's total Area.  You can, if you wish, add more wing area.  It will affect certain fiddly details such as your stall speed, aerial handling and runway takeoff distance.
+==== Wing In Ground Effect ====
+If the wing is intended only to operate within the ground effect, you can halve the Minimum Wing Area.  However, your aircraft cannot fly higher than your vehicle's Linear value, expressed in meters.