First, let's define the complete JSON schema:
json{
  "display_name": "Atmosphere",
  "signal_item": "quantumrocketry:atmosphere_targeting_processor",
  "frame_item": "quantumrocketry:iron_frame",
  "frame_count": 1,
  "circuit_item": "quantumrocketry:copper_circuit",
  "circuit_count": 1,
  "fuel_mb": 4000,
  "launch_ticks": 100,
  "return_ticks": 600,
  "reward": {
    "type": "single",
    "rolls": [
      { "item": "quantumrocketry:atmosphere_sample", "count": 1, "weight": 100 }
    ]
  }
}

And a bundle example:
json{
  "reward": {
    "type": "bundle",
    "contents": [
      { "item": "quantumrocketry:moon_rock", "count": 2, "chance": 1.0 },
      { "item": "minecraft:diamond", "count": 1, "chance": 0.05 }
    ]
  }
}
