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This is the flight motor for Hermes Flight 1. The motor is almost identical to the second 4G 152mm OW static, but uses 8.5" long grains to increase propellant mass slightly. It was decided that this was reasonable deviation from the tested motor as it was only 3% more propellant.
Statistic | Value |
|---|---|
| Propellant Weight | Sam add this |
| Impulse | 32900 Ns |
| Max Pressure | Unknown |
| Classification | O-4300 |
| Delivered ISP | |
| Grains |
|
*propellant mass estimated by delivered impulse prior to anomaly, improved estimate to come after failure analysis
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| Sam add this | |
| Grains | OW-152 #25-28 |
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Issues
Detail 1 - Gross Acreage Damage
Phenolic tube Liner sustained damage during transit. Root cause Cause appears to be insufficient packaging.
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Detail 2 - Nozzle End Damage
Should Be - Nominal Tube
Is - Slightly buckled and chipped phenolic and excess of polyurethane glueTube likely dropped or rolled into object during transit.
Detail 3 - Head End Damage
Should Be - Nominal Tube
Is - Plys of the tube are buckled inwards and slightly laminated.Tube likely dropped or rolled into object during transit.
