Prior Testing
- Actual CG vs predicted CG
- Actual weight vs predicted weight (empty)
- Alt-25 Altimeter - vacuum with 2 outputs
- AltAcc - tilt for 1 drogue, vacuum for main output
- Successful drogue separation with shear pins
- Successful main separation with shear pins
Assembly Procedure
- Assemble motor as per manufacturers instructions
- Check condition of igniter pyrogen
- Test igniter continuity
- Test new batteries for each altimeter
- Insert batteries in each altimeter
- Close altimeter compartments with 4 wing-nuts
- Insert LES shorting connector and tape (J1)
- Disconnect ejection charge connector (J2)
- Disconnect altimeter arming connector (J3)
- Close electronics compartment with 2 u bolts, 4 nuts, and washers
- Load and attach 2 main LESs
- Load and attach 2 drogue LESs
- Place nomex sleeve on tubular nylon for main chute
- Connect parachute through airframe to electronics compartment u-bolt
- Attach electronics compartment to top parachute compartment (6 screws)
- Connect parachute to nose cone
- Pack main chute
- Insert nomex shield with main chute
- Insert nose cone
- Insert shear pins
- Place nomex sleeve on tubular nylon for electronics compartment
- Attach tubular nylon for electronics compartment to drogue chute
- Place nomex sleeve on tubular nylon for drogue chute
- Attach drogue chute to bottom airframe
- Pack drogue chute
- Insert nomex shield with drogue chute
- Place electornics compartment on bottom airframe
- Insert shear pins
- Check shear pins for unintentional separation when held by nose cone
- Check shear pins for unintentional separation when held by top airframe
- Short motor igniter
- Insert motor igniter and tape for transport (changed - no
insertion until rocket on pad)
Pre-Arming Procedure
- Insert ejection charge shorting connector (J1) if not already present
- Disconnect ejection charge connector (J2) if not disconnected
- Disconnect altimeter arming connector (J3) if not disconnected
Arming Procedure
- Place rocket on pad
- Insert ejection charge connector (J2)
- Insert altimeter arming connector (J3)
- Remove ejection charge shorting connector (J1)
- Verify proper operation of altimeters (only valid with EC shorting connector removed)
Alts-25 - 4 beep pattern signifies continuity of drogue and main
AltAcc - triple flash signifies continuity of drogue and main
- Attach control access panel cover
- Remove extra tape from igniter (changed to insert igniter)
- Remove short from igniter
- Check igniter leads for spark (caution)
- Attach igniter leads
Dis-Armimg Procedure
- Remove control access panel cover
- Insert ejection charge shorting connector (J1)
- Disconnect ejection charge connector (J2)
Data Aquisition Procedure
Record beep pattern for Alts-25 BEFORE disconnecting power to Alts-25
Disconnect arming/power connector (J3)
Transportation of rocket, disassembly, interface AltAcc to computer