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massMeasurements.md

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Airframe CoM Measurements

Measurements taken on 2018-01-19 with a tolerance of +/- 0.125". Lengthwise CoMs were determined by the following.

  • A 1" diameter HDPE bar stock was taped to a table.

  • A yard stick was placed on the table.

  • The center of the bar stock was aligned to the 20" mark, with the bar stock perpendicular to the yard stick),

  • The flight article was placed on the bar stock and adjusted until it balanced freely. (Gentle touches were necessary to stabilize it.)

  • A suitable feature was sighted along the yard stick and its distance from the bar stock was recorded.

  • PSAS-0001-0006 (standard 18"): 518 g, 9" from the male face

  • PSAS-0001-0005 (dragonscale 24"): 703 g, 12.375" from the male face

  • PSAS-0001-0015 fin can: 1933 g, 13.875" from the male face

  • PSAS-0001-0023 (24" sled module): 707 g, 12.5" from the male face

  • PSAS-0001-0004 (standard 24"): 677 g, 18.25" from the male face

  • PSAS-0001-0003 (18" radome): 484 g, 9.375" from the male face

  • PSAS-0001-0001 (nosecone with tip, rod, and hook): 1394 g, 18.875" from the female skirt

  • PSAS-0001-0001 (nosecone alone): 1166 g, 15" from female skirt

  • threaded rod: 105 g, 4" long (sits 2.57" out from the skirt of the tip)

  • PSAS-0001-0011 (nosecone tip): 122 g

  • cradle

    • wood frame: 227 g
    • SLA mount 59 g
    • acrylic spacer: 72 g
    • 6061 mount: 136 g
  • dented thrust flange: 79 g

  • nice thrust flange: 79 g