ภาพนี้ ควรจะถูกสร้างใหม่เป็นกราฟิกส์เวกเตอร์ ซึ่งมีข้อดีอีกหลายประการ ดูเพิ่มเติมที่คอมมอนส์:สื่อต้องการเก็บกวาดสำหรับสารสนเทศเพิ่มเติม หากภาพนี้มีในรูปแบบกราฟิกส์เวกเตอร์อยู่แล้ว กรุณาอัปโหลดและแทนที่แม่แบบนี้ด้วย {{vector version available|ชื่อภาพใหม่}} แนะนำเป็นอย่างยิ่งให้ตั้งชื่อไฟล์เวกเตอร์ใหม่นั้นในรูปแบบ "Gravity Wells Potential Plus Kinetic Energy - Circle-Ellipse-Parabola-Hyperbola.svg" แล้วใส่แม่แบบ Vector version available (หรือ Vva) ซึ่งไม่ต้องใช้พารามิเตอร์ ชื่อภาพใหม่
ความย่อ
คำอธิบายGravity Wells Potential Plus Kinetic Energy - Circle-Ellipse-Parabola-Hyperbola.png
English: The gravity wells are shown for four conic section trajectories. The x-axis and y-axis show spatial dimensions around the primary body. The z-axis shows energy, with the spacecraft's kinetic energy depicted in red as it extends above the gravitational potential energy of the well shown in black. The four orbits depicted (from top-left to bottom-right) are circular (with constant kinetic energy for the constant speed), elliptical (with lower kinetic energy at apogee indicating slower speed), parabolic and hyperbolic. The total energy (potential plus kinetic) for each case remains constant. The negative total energy for the circular and elliptical cases indicate that the spacecraft is bound to the primary body. The parabolic case has zero total energy. The hyperbolic case has positive total energy, on a trajectory that escapes from the primary. The part of its kinetic energy that extends above the zero total energy line corresponds to its "hyperbolic excess velocity".
A spacecraft can change its energy state by performing a thrusting maneuver, where chemical potential energy is converted to kinetic energy. Chemical potential energy is not depicted in these diagrams.
Note: Half of the field has been cut away for clarity.
Gravity well graphic generated by HiQ. PDF image edited with GIMP.
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