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VariableLength (in inches)Description
hmp57.4Height of the mission package from nose cone tip to the end of the airframe
lmp14.5Depth into the cup
lfc734.65Depth of booster coupling section
hfc8676.235Total height of booster including coupling section.
RB7.5Height of the main deployment bag, not including flaps.
DM114 (9.5 ft)Diameter of the main parachute
RM80.6

Height of the main parachute (found using 0.707 aspect ratio):

RM = DM*0.707

SM120Length of shroud lines on the main parachute (not the vertical length).
RD31Height of the drogue parachute (measured on test article 2/15/2018)
SD100Vertical length (accounts for confluence angle) of the drogue shroud lines. Taken from the DGB parameters spreadsheet.
FD,D17Forebody diameter used for drogue parachute shock cord calculation. Please see the extended note on calculation below.
FD,M29.5Forebody diameter used for main parachute shock cord calculation. Please see the extended note on calculation below.
DD38Disk diameter of the drogue parachute. Taken from the DGB Parameters spreadsheet.
HTD2.7Height of the Tender Descender, including 1.5 quicklinks. (Since two Tender Descenders will be used in the calculation below, this will yield the correct total length)
WA,E5.4There is no webbing between junctions A and E, just two Tender Descenders. Thus, this is calculated by 2*HTD
WE,F13.5

This is the total height of the main deployment bag (RB) plus the 6 in for the straps on the top of it..

Placing the junction between the tender descender (TD) and the main chute load paths as far inside the mission package as possible reduces the likelihood that the main parachute will enter the airstream prior to the designated release altitude of 2,000 ft.

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