A simplified Gravitic Impeller Wedge. Made for my RMN CL Variant ship, it should be placed on the bridge, just under the foreward view screen. In essence, two strong fields of highly focused gravity are projected in front of and above/below the ship, pulling it along at high acceleration. Reversed, it can slow the ship too. To either side of the ship are two sidewalls, weaker fileds of gravity intended to protect the ship from enemy fire. Unfortunately, there is no way to close the front and back of the wedge, without losing the ability to move the ship, thereby making the ship vulnerable to fire from fore or aft, hence why most ship to ship engagements are side to side, a.k.a. 'broadsides." This is the primary sublight propulsion and defense system for all ships in David Weber's "Honor Harrington" series. Original design and mesh. Try before you buy.