![]() ![]() The center of thrust is displayed as a vector. Hence it indirectly resembles the center on which the downward force of gravity acts.Ĭenter of Thrust (COT) – Thrust Force Vector It is also where the downward force of gravity pulls down on the rocket or plane. (!) The Center of Mass of an object is a static property of an object. ![]() The point in space where your finger is placed to balance the object is where the center of mass is located. Let’s look at the various centers and vectors next.Ĭenter of Mass (CoM) – Indirectly represents the Gravity Force Vectorīalance an object on the tip of your finger. A force is a vector it acts on a center and pushes in a certain direction with a certain amount. ![]() Now we can look at forces acting on a craft in atmosphere (aerodynamic forces of lift and drag) under gravity (force of gravity) using its engines (force of thrust). Either use ‘mass’ or ‘(force of) gravity’, but definitely not ‘weight’, okay? Let’s agree not to use the word ‘weight’ anymore. Hint If you see the word ‘weight’, simply substitute it for ‘force of gravity’. Weight is a force (N) and represented by a vector.For interplanetary rocket design, we need to be more accurate, so: Coyote is 6 times less on the Moon than on Earth.Īs I am not likely to leave the planet anytime soon kilograms will do just fine 1kg weighs not much really, 10kg weighs quite a bit more and 1000kg weighs a lot. The force exerted by a 50kg ACME anvil dropped on Wile E. The Moon’s gravity is 1/6th that of Earth’s gravity. Even though on earth we express weight in kilograms, it really should be expressed as a force in Newton (N). Weight is an indicator of how heavy an object ‘feels’. Thousand kilograms is called one ton or tonne (1t). In space, there is only Thrust and the Gravitational pull from planets.īefore we start looking at these forces, let’s get something out of the way first. There are four forces acting on a craft when in the lower atmosphere within gravity: Thrust, Weight, Lift and Drag.ĭrag and Weight = Bad, although they do come in handy at times.įorces during atmospheric vertical take-off. What engines to use? How much fuel to take? What shape should the craft be? Stack decouplers or Radial decouplers? Solid booster or Liquid Fuel Engine? Let’s start with some basic concepts. I have marked your answer as the solution.Kerbal Space Program – How to build a rocket To avoid this bug, keep the decouples in separate stages from the engines, and make sure they stage before the this describes your issue? To avoid this bug, keep the decouples in separate stages from the engines, and make sure they stage before the this describes your issue? Edited March 2 by CiberX15 Small and tiny stack separators and decouplers do not reproduce the bug. It appears to affect both decouplers and stack separators from the medium size up. I went through and tested all the decouplers to see which ones triggered the bug and found the following decouplers reproduce the bug. Once this occurs the ship will be unable to decouple at that point, though other decouplers on the craft do still appear to work. Observe decoupler does not appear in parts manager Observe, the decoupler disappears from staging, but ship is not separated When out of fuel, stage, causing the engine to fire before the decoupler Move the engine into its own stage, then move the engine stage under the decoupler stage OR move the engine and decoupler into the same stage Create a two stage craft using the TD-25 Decoupler The engine used does not appear to matter. Other decouplers like the smaller TD-12 do slightly strange things, like teleporting the shroud in front of the ship, but don’t break reality in such a spectacular way. Like the medium sized TD-25 Stack Decoupler. Through testing I also discovered that this only appears to occur with certain decouplers. If the decoupler fires first all will be well, but if the engine fires first the ship will get borked. And then the decoupler disappears from staging even though it has not been activated, but the ship does not get separated. If an engine and its decoupler are in the same stage, or the engine is staged before the decoupler it’s attached to, the decoupler will fail and the ship will be unable to separate.Īctivating the engine dumps the shroud, regardless of whether the decoupler has been staged or not. I'll repost what I've seen here for more visibility. Ah yeah! I ran in to something like this but I sent it in as a support email directly. ![]()
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