I Enforcing artificial frozen orbit

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The discussion focuses on maintaining a frozen orbit configuration for two satellites with identical orbital parameters but different altitudes, specifically addressing the delta-v requirements to keep their perigees aligned. Participants clarify that while RAAN precession is typically ignored in frozen orbits, it still affects overall alignment over time. The gravitational influence of Earth plays a significant role in determining delta-v needs. The importance of perigee alignment is emphasized, especially in constellations with minimal altitude separation to prevent collisions. The conversation highlights the complexities of orbital mechanics in achieving and maintaining such configurations.
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Hello,
I'm interested in how to formulate a simple constellation in which there are two satellites with identical orbital parameters (eccentricity <0.003, same inclination and aligned arg. Perigee, same RAAN) but which have different altitudes (e.g. Semi major axis) which are around 1000km and offset by a small amount, say 50km.

As the orbits propagate, the arg perigees will precess at different rates. My question is how can I determine delta-v requirements to keep the perigee aligned during orbit evolution (ignoring RAAN precession) and therefore keeping a frozen configuration. Any thoughts welcome.
 
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a_potato said:
... (e.g. Semi major axis) which are around 1000km...

Earth has a mean radius of 6,371.0 km. The delta-v requirements will be effected by the gravitational pull of the thing your satellites orbit.
 
I'm a bit confused why you would call the orbits frozen if their RAAN diverge over time. Why would the perigee be so important if you require the eccentricity to be very small anyway?
 
mfb- RAAN is not normally considered in a frozen orbit as it must always precess relative to something (e.g. a sun-sync orbit processes relative to an inertial system). Perigee is important in constellations with small altitude separations between orbit planes, such that the apogee of one is higher than the perigee of the next one
 

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