The purpose of this document is to list the inspections of the Recovery Bay required to validate certain requirements listed in the following chapters.
The Recovery bay must meet and comply with the following requirements:
The recovery team has performed a successfull integration of their components, consisting mainly on the parachute, the swivel and the shockcords.
The guiding tube was wrapped around a 185 mm aluminium tube. A total of four glass fiber layers were applied, resulting in an outer diameter of approximately 186.6 mm (0.2 mm × 4 × 2). This value has been confirmed through precise measurements, which will be presented in this document.
The usable length is calculated as the guiding tube length minus the portion of the eyebolt sticking out from the caps: 745 − 45 = 700 mm > 600 mm, thus satisfying the requirement. TKK put real length here
The length available for the RE team has been measured at ...TKK. This complies with the requirement.
The recovery tube length is 720 mm (to be verified TKK). Including the upper coupler, shock plate, and bottom coupler, the total length is approximately 760 mm. This does not comply with the requirement, but the deviation has been reviewed and deemed non-critical for flight.
The total mass of the RE bay structure, including the coupler and separation mechanism, is currently 5200 g < 6000 g.TKK This complies with the requirement.
The assembled flight version of the recovery bay is inspected here. Ensuring its measurements are within the requirements is essential to qualify them.
Put here pictures of the assembled RE bay
The inspection was conducted according to the standard recovery bay inspection procedure:
Visual Inspection: check for surface defects, material integrity, and machining quality.
Dimensional Measurement: use calipers to measure guiding tube diameter and usable length.
Mass Measurement: weigh recovery bay structure with a calibrated scale.
Length Verification: measure total bay length and usable recovery space.
Pictures of the inspection process: TBD
Date of inspection: TBD
Place of inspection: EPFL DLL workshop.
Inspector: TBD
If special tools or fixtures were used, detailed steps and photos will be added.
All measurements were carried out following the standard procedure, with multiple repetitions to ensure consistency.
| Requirement | Verification Method | Value Measured | Measurement Error | Unit | Pass/Fail |
|---|---|---|---|---|---|
| REQ_01: Declaration of Purpose | Visual confirmation that bay hosts RE systems. | OK | N/A | - | Pass |
| REQ_02: Guiding Tube Diameter | Measure tube diameter at three positions with caliper on either side. | D_int = 185, D_ext = 186.6 | ±0.1 | mm | Pass |
| REQ_03: Usable Length for Recovery | Measure internal usable length with tape or caliper. | TBD | ±1 | mm | TBD |
| REQ_06: Bay Length | Measure total bay length. | TBD (should be around 777.5) or 720 depending on the definition of a bay | ±1 | mm | TBD |
| REQ_09: Recovery Bay Mass | Weight bay structure. | TBD | ±1 | g | TBD |
| Requirement [unit] | Requirement Limit [unit] | Measurement (worst case) [unit] | Delta [%] | Pass/Fail |
|---|---|---|---|---|
| Guiding Tube Diameter [mm] | 190 | 186.6 | TBD | TBD |
| Usable Length for Recovery [mm] | ≥600 | TBD | TBD | TBD |
| Bay Length [mm] | ≤700 | TBD | TBD | Fail |
| Recovery Bay Mass [g] | ≤6000 | TBD | TBD | TBD |
No anomalies detected during inspection.
Concerning the requirement 6, the recovery tube length is 720 mm. Including the upper coupler, shock plate, and bottom coupler, the total length is approximately 760 mm.
Although this exceeds the specified requirement, the deviation has been reviewed and deemed non-critical for flight.