---
id: "prereq-orbital-mechanics-basics"
type: "prereq"
source_timestamps: ["§ Childhood Dreams", "§ Fueling Growth"]
tags: ["aerospace", "physics"]
related: ["concept-dedicated-small-launch", "claim-rideshare-dilemma"]
reason: "Required to understand why the 'rideshare' model was a bad option for small satellite operators and why dedicated small launch was a massive market opportunity."
sources: ["tail2"]
sourceVaultSlug: "hbr-seg-tail2"
originDay: 2
articleStem: "hbr-tail-119-rocket-lab-founder"
sourceUrl: "https://hbr.org/2026/03/the-founder-of-rocket-lab-on-competing-with-billionaires-to-lead-in-space"
sourceTitle: "The Founder of Rocket Lab on Competing with Billionaires to Lead in Space"
---
# Basic Orbital Mechanics and Satellite Deployment

The source assumes the reader understands why a satellite operator cares about **launch timing and orbit**. In rideshare missions, the *primary* payload dictates the orbital altitude and inclination; secondary payloads are dropped off wherever the primary is going, which may be sub-optimal for their specific mission (e.g., Earth observation vs communications).

**Why it matters:** Required to understand why the rideshare model was a bad option for small-satellite operators ([[claim-rideshare-dilemma]]) and why [[concept-dedicated-small-launch]] was a massive market opportunity. Enrichment note: smallsats typically span **3–500 kg**, and rideshare secondaries often need extra onboard propulsion — or must accept a standard orbit such as SSO — to reach their target.