Research Article

A First-Order Analytical Theory for Optimal Low-Thrust Limited-Power Transfers between Arbitrary Elliptical Coplanar Orbits

Figure 2

The vectors 𝛿 𝐫 = 𝛿 𝜉 𝐞 𝐫 + 𝛿 𝜂 𝐞 𝐬 , 𝛿 𝐯 = 𝛿 𝑢 𝐞 𝐫 + 𝛿 𝑣 𝐞 𝐬 . ( 3 . 1 1 ) and 𝑎 .
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