2025_C_ST_OPERATION_PROCEDURE

Equipment	Qty	Packed in	Sign-off	Done
Allen key Set	2	Mallette structure	.........	$\square$
Blue Loctite	1	Mallette structure	.........	$\square$
Caliper	1	Mallette structure	.........	$\square$
Complete torque wrench HASKYY	1	Structure Box	.........	$\square$
Torque Wrench Stahlwille	1	Structure Box	.........	$\square$
18 socket for torque wrench Stahlwille	1	Racco structure	.........	$\square$
Allen key 7	1	Mallette structure	.........	$\square$
Screwdriver Jules	1	Mallette SepMech	.........	$\square$
Screw driver with 2.5 hex bit	1	/	.........	$\square$
Screw driver with 2 hex bit	1	/	.........	$\square$
Screw driver with 1.5 hex bit	1	/	.........	$\square$
Adjustable wrench	1	/	.........	$\square$
Torque Wrench	1	/	.........	$\square$
Socket 2.5 for torque wrench	1	/	.........	$\square$
Marker pen	1	/	.........	$\square$
Ruler (> 0.8 [m])	1	/	.........	$\square$
Sharp scissors or cutter	1	/	.........	$\square$

Part	Qty	Packed in	Sign-off	Done
Screws
M6x16 10.9 low head screw	60	Racco structure	.........	$\square$
M4x6 10.9 round head	100	Racco structure	.........	$\square$
M5x16 10.9	100	Racco structure	.........	$\square$
M5 nut 10.9	100	Racco structure	.........	$\square$
M5 Washer	100	Racco structure	.........	$\square$
M10x18 10.9 low head srew	50	Racco structure	.........	$\square$
M10 nut 10.9	50	Racco structure	.........	$\square$
M3x30 8.8 internal hex screw	10	Mallette sepmech	.........	$\square$
M3x5 button head screw	10	Mallette sepmech	.........	$\square$
M2.5x6 conical head screw	20	Mallette sepmech	.........	$\square$
M3 thin washers	16	Mallette SepMech	.........	$\square$
M3 1.6mm washers	16	Mallette SepMech	.........	$\square$
M3 nuts	8	Mallette SepMech	.........	$\square$
Rail Button
Rail button Washer	4	Racco structure	.........	$\square$
Rail button locker	4	Racco structure	.........	$\square$
Separation Mechanism
Fully assembled Clamp Band	2	Mallette SepMech	.........	$\square$
Female 'SepMech' coupler	1	Equipement Structure	.........	$\square$
Female 'Shockpler' coupler	1	Equipement Structure	.........	$\square$
Powder Chamber	4	Mallette SepMech	.........	$\square$
Body	4	Mallette SepMech	.........	$\square$
Tungsten Projectile	4	Mallette SepMech	.........	$\square$
0.8 mm thick Band	2	Mallette SepMech	.........	$\square$
Clamp	10	Mallette SepMech	.........	$\square$
'Guide' nut	3	Mallette SepMech	.........	$\square$
'Screw' nut	3	Mallette SepMech	.........	$\square$

Equipment	Packed in	Sign-off	Done
Epoxy	Blue Bag	.........	$\square$
Zip Ties	Red Bag	.........	$\square$
5-min epoxy (Araldite)	Mallette SepMech	.........	$\square$
Black Powder (10 [g])	Mallette SepMech	.........	$\square$
Electrical igniters	Mallette SepMech	.........	$\square$
3M Aluminum Tape	Mallette SepMech	.........	$\square$
Tungsten bars	Mallette SepMech	.........	$\square$

Responsible for:	Name
Checklist/Supervisor	Florent
Sepmech	Emma
Mid Bay Panel	Emma/jules
Pressurant Bay Panel	Emma/Jules
Avionics Bay Panel	Emma/Jules
Engine Bay Panel	Emma/Jules
Loctite Director	Zina
Rocket Rotation Director	Zina
Screws Director	Zina
Nosecone Assembly	Zina
Boattail Assembly	Zina
Recovery Assembly	Jules
Fins Assembly	Emma/Jules
Aerocover Assembly	Emma/Jules

Step	Task	Time	Sign-off	Done
	--------------------- Section 1 ---------------------
\rownumber		x min	.........	$\square$
\rownumber		x min	.........	$\square$
\rownumber		x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK		\color{red}.........	\color{red} $\square$

¶ Introduction

¶ Purpose, Objective and Scope

¶ Applicable and Reference Documents

¶ Procedure

¶ Tools Checklist

¶ Part Checklist

¶ Consumables Checklist

¶ Participants

¶ Pre-condition

¶ Step-by-Step Procedure

¶ Switzerland

¶ J-1

¶ Pre-condition

¶ Pre-Flight

¶ Pre-Conditions

¶ Post-Flight

Step	Task	Time	Sign-off	Done
	----- Separation Mechanism ------
\rownumber	Place Shockpler coupler (and attached AVB) upright on a table	1 min	.........	$\square$
\rownumber	Below the Shockpler pyrocutter holes, define respectively sides A and B with a marker	1 min	.........	$\square$
\rownumber	Insert a pyrocutter body inside both holes in Shockpler, making sure the M3 holes on the pyrocutters align with the Lower Ring	1 min	.........	$\square$
\rownumber	Clean the Shockpler coupler Ring surface with alcohol	2 min	.........	$\square$
\rownumber	Clean the Sepmech coupler Ring surface with alcohol	2 min	.........	$\square$
\rownumber	Place Sepmech coupler on top of Shockpler. Make sure Upper and Lower ring interfaces align correctly, using the small machined portions on the ring circumference	2 min	.........	$\square$
\rownumber	Align both clamp bands along the Ring interface, making sure that 1 Screw nut and 1 Guide nut are on either side of each Pyrocutter	2 min	.........	$\square$
\rownumber	On side A, insert an M3x30 screw through that side's Guide nut and pyrocutter body, and screw it into that side's Screw Nut just enough so that it is fastened (using a 2.5 size Allen key or screwdriver)	3 min	.........	$\square$
\rownumber	On side B, insert an M3x30 screw through that side's Guide nut and pyrocutter body, and screw it into that side's Screw Nut just enough so that it is fastened (using a 2.5 size Allen key or screwdriver)	7 min	.........	$\square$
\rownumber	Visually and physically check for correct interfacting between all clamps and Ring circumference	3 min	.........	$\square$
\rownumber	Lightly screw in both M3x30 in the Screw nuts, making sure both sides are symmetrical, using a 2.5 size Allen key or screwdriver	2 min	.........	$\square$
\rownumber	\color{red}SE CHECK : Pre-torquing SepMech assembly check		\color{red}.........	\color{red} $\square$
\rownumber	Set the torque wrench to 1 [Nm] and equip it with a 2.5 hex bit	1 min	.........	$\square$
\rownumber	Screw both M3x30 screws up to 1 [Nm] using the torque wrench	2 min	.........	$\square$
\rownumber	Set the torque wrench to 1.75 [Nm]	1 min	.........	$\square$
\rownumber	Screw both M3x30 screws up to 1.75 [Nm] using the torque wrench	2 min	.........	$\square$
\rownumber	\color{red}SE CHECK : Post-torquing SepMech assembly check		\color{red}.........	\color{red} $\square$

Step	Task	Time	Sign-off	Done
	--------------------- Fins ---------------------
\rownumber	Place fin 1 on rod 1	x min	.........	$\square$
\rownumber	Lightly tighten the 8 M5 screws with the M5 nuts + M5 washers	x min	.........	$\square$
\rownumber	Align the Fins with the center of the coupler ear	x min	.........	$\square$
\rownumber	Keep the fins Aligned and tight the srews until have resistance	x min	.........	$\square$
\rownumber	Tight each Screw to 6 Nm and mark the screw after appling torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Mark on screws, washes, alignment		\color{red}.........	\color{red} $\square$
\rownumber	Place fin 2 on rod 2	x min	.........	$\square$
\rownumber	Lightly tighten the 8 M5 screws with the M5 nuts + M5 washers	x min	.........	$\square$
\rownumber	Align the Fins with the center of the coupler ear	x min	.........	$\square$
\rownumber	Keep the fins Aligned and tight the srews until have resistance	x min	.........	$\square$
\rownumber	Tight each Screw to 6 Nm and mark the screw after appling torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Mark on screws, washes, alignment		\color{red}.........	\color{red} $\square$
\rownumber	Place fin 3 on rod 3	x min	.........	$\square$
\rownumber	Lightly tighten the 8 M5 screws with the M5 nuts + M5 washers	x min	.........	$\square$
\rownumber	Align the Fins with the center of the coupler ear	x min	.........	$\square$
\rownumber	Keep the fins Aligned and tight the srews until have resistance	x min	.........	$\square$
\rownumber	Tight each Screw to 6 Nm and mark the screw after appling torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Mark on screws, washes, alignment		\color{red}.........	\color{red} $\square$
\rownumber	Place fin 4 on rod 4	x min	.........	$\square$
\rownumber	Lightly tighten the 8 M5 screws with the M5 nuts + M5 washers	x min	.........	$\square$
\rownumber	Align the Fins with the center of the coupler ear	x min	.........	$\square$
\rownumber	Keep the fins Aligned and tight the srews until have resistance	x min	.........	$\square$
\rownumber	Tight each Screw to 6 Nm and mark the screw after appling torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Mark on screws, washes, alignment		\color{red}.........	\color{red} $\square$
	--------------------- Boattail ---------------------
\rownumber	Screw the lifting rings on the thrust plate	x min	.........	$\square$
\rownumber	Torque the nut at X Nm	x min	.........	$\square$
\rownumber	Assemble the hold-down system to the lifting rings.	x min	.........	$\square$
\rownumber	Place the Boattail around the engine	x min	.........	$\square$
\rownumber	Align the chassis with the hold down system	x min	.........	$\square$
\rownumber	Lightly tighten the 8 M4 scews at the boattail top	x min	.........	$\square$
\rownumber	Tight each Screw to 2 Nm and mark the screw after appling torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Mark on screws, alignment		\color{red}.........	\color{red} $\square$
	--------------------- Pyrocutter ---------------------
\rownumber	Place a numbered powder chamber upright onto a table. Do not put it in a clamping mechanism or it will be deformed	1 min	.........	$\square$
\rownumber	Insert an electrical igniter inside it and pull it until only the head is in the chamber	2 min	.........	$\square$
\rownumber	Place 0.6 [g] of black powder inside the chamber, ie until it is filled	2 min	.........	$\square$
\rownumber	Place a tungsten projectile on top of the chamber, facing upwards, with 5-min epoxy (Araldite). Perfect upwards alignment of the projectile is required	5 min	.........	$\square$
\rownumber	Smother the electrical igniter hole below the chamber with 5-min epoxy (Araldite)	3 min	.........	$\square$
\rownumber	\color{red}SE CHECK : Pyrocutter 1 lower part check		\color{red}.........	\color{red} $\square$
\rownumber	Repeat all steps to assemble Pyrocutter 2 lower body	13 min	.........	$\square$
\rownumber	\color{red}SE CHECK : Pyrocutter 2 lower part check		\color{red}.........	\color{red} $\square$
\rownumber	Wait for a minimum of 4 hours for the epoxy to harden	240 min	.........	$\square$
\rownumber	Screw the corresponding numbered powder chamber onto the first body	2 min	.........	$\square$
\rownumber	Screw the corresponding numbered powder chamber onto the second body	2 min	.........	$\square$
\rownumber	\color{red}SE CHECK : Pyrocutter assemblies check		\color{red}.........	\color{red} $\square$
	--------------------- Nosecone ---------------------
\rownumber	Insert the spacer inside the Nosecone	x min	.........	$\square$
\rownumber	Screw the back plate on the payload with 4 M4x16 screws loctited	x min	.........	$\square$
\rownumber	Tight the srews to 2 Nm and mark them	x min	.........	$\square$
\rownumber	Insert the Payload inside the Nosecone	x min	.........	$\square$
\rownumber	Screw the back plate on the Nosecone with 4 M4x16 loctited	x min	.........	$\square$
\rownumber	Tight the srews to 2 Nm and mark them	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Mark on screws, alignment		\color{red}.........	\color{red} $\square$

Step	Task	Time	Sign-off	Done
	--------------------- Recovery Bay ---------------------
\rownumber	Place the RE tube on the Workbench	x min	.........	$\square$
\rownumber	Screw the eye bolt the Shock plate with loctite	x min	.........	$\square$
\rownumber	Insert the Guiding Tube inside the RE tube	x min	.........	$\square$
\rownumber	Screw the shockplate to the female coupler with 4 M4x16 screw loctited, M4 washes and M4 nuts	x min	.........	$\square$
\rownumber	Screw the guiding tube to the shockplate with 4 M4x16 screw loctited, and the plastic spacer	x min	.........	$\square$
\rownumber	Screw the M24 eye bolt loctited to the shockpler with the M24 nut	x min	.........	$\square$
\rownumber	Clean the coupler surface with alcohol	x min	.........	$\square$
\rownumber	Place the RE bay and the Avionics bay in contact	x min	.........	$\square$
\rownumber	Srew the M6x16 screw without too much torque	x min	.........	$\square$
\rownumber	Once all screws are lightly tightened, place the ruler on the junction between the female coupler and the tank to check the alignment	x min	.........	$\square$
\rownumber	Tight the M6 screw with loctite in star up to 7 Nm and mark each srew after applying the torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	--------------------- Nosecone Bay ---------------------
\rownumber	Clean the coupler surface with alcohol	x min	.........	$\square$
\rownumber	Place the RE bay and the Nosecone Bay in contact	x min	.........	$\square$
\rownumber	Srew the M6x16 screw without too much torque	x min	.........	$\square$
\rownumber	Once all screws are lightly tightened, place the ruler on the junction between the female coupler and the tank to check the alignment	x min	.........	$\square$
\rownumber	Tight the M6 screw with loctite in star up to 7 Nm and mark each srew after applying the torque	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	------------- Separation Mechanism --------------
\rownumber	Using a torque wrench, verify both M3x30 screws are still torqued up to 1.75 [Nm]	2 min	.........	$\square$
	-------------- Avionics Bay Panels --------------
\rownumber	Place the left Panel on the Avionics Bay	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	Place the Right Panel on the Avionics Bay	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	------------ Pressurant Bay Panels -------------
\rownumber	Place the left Panel on the Pressurant Bay	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	Place the Right Panel on the Pressurant Bay	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	------------ Mid Bay Panels -------------
\rownumber	Place the left Panel on the Mid Bay Bay	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	Place the Right Panel on the Mid Bay	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	----------- Engine Bay Panels -----------
\rownumber	Place the Panel 1 on the fist quarter	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x6 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	Place the Panel 2 on the second quarter	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	Place the Panel 3 on the thrird quarter	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x6 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	Place the Panel 4 on the fourth quarter	x min	.........	$\square$
\rownumber	Screw the Panel with the 4 M4x12 ronded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	------------- Aerocover ------------
\rownumber	Place the Aerocover on the Rocket	x min	.........	$\square$
\rownumber	Screw the 12 M4x12 rounded head with loctite	x min	.........	$\square$
\rownumber	Tight the screws with 2 Nm and mark them	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the alignement and the mark on each screws		\color{red}.........	\color{red} $\square$
	------------ Speed Tape ------------
\rownumber	Place a speed tape band around the SepMech	x min	.........	$\square$
\rownumber	Place a speed tape band around both ends of the avionics panel	x min	.........	$\square$
\rownumber	Place a speed tape band around both ends of the Pressurant bay panel	x min	.........	$\square$
\rownumber	Place a speed tape band around both ends of the Mid bay panel	x min	.........	$\square$
\rownumber	Place a speed tape band around both ends of the Engine bay panel	x min	.........	$\square$
\rownumber	Place a speed tape band around the Aerocover	x min	.........	$\square$
\rownumber	\color{red}SE/COO CHECK : Check the Speed tape		\color{red}.........	\color{red} $\square$
	---------- STRUCTURE IS READY FOR FLIGHT ---------