Decision inputs
- Temperature range and thermal cycling
- Vibration and shock spectrum
- Life and redundancy requirements
- Space and mass limits
APPLICATION SOLUTION
Aerospace preload
Aerospace mechanisms use disc springs for constant preload, clearance cancellation and energy buffering under severe temperature, vibration and life requirements; this entry page lists decision points and evidence, with depth to grow as evidence density allows.
ENGINEERING PROBLEM
Doors, release and actuation mechanisms need stable preload and energy storage in tight space across wide temperature ranges and vibration.
BOUNDARY
This page describes a decision pattern and does not promise size or performance for another operating condition.
Solution pattern
- Disc spring stacks give constant preload and compensate differential thermal growth
- Arrange stored spring energy and release for fail-safe behaviour
- Select materials and finishes fit for temperature and space
Key risks
- Spring rate decay at temperature extremes
- Vibration-induced loosening or wear
- Mass and space limits constrain spring sizing
Verification plan
- Preload re-test over thermal cycles
- Vibration and shock testing
- Life and functional tests
Source-backed correspondences
| Summary | Load | Travel | Source |
|---|---|---|---|
| 航空航天预紧——按preload目标预选产品族；场景摘要仅供决策参考，不构成对其他工况的产品承诺。 | 按结构预紧目标 | 补偿行程 | Source ↗ |
Evidence (library locators)
Every technical claim traces to a specific asset version and page; restricted sources show locator metadata only.
- 166 NTRS 19690001059 Thrust chamber seal with 4 stacked Belleville springs PDF p.17 · mechanism(internal source; excerpt not public)
- 1994 NASA Mechanical Energy Absorber Disc Springs PDF p.10 · mechanism(internal source; excerpt not public)
- 175 EPO EP0459985A1 Control actuator and switch with Belleville snap sprin PDF p.1 · mechanism(internal source; excerpt not public)
- 167 NTRS 19740002611 Nonmodulating relief valve with Belleville springs 泄压 PDF p.68 · mechanism(internal source; excerpt not public)
- ru 2019 Устройство накопления энергии периферийного стыковочного механизма PDF p.6 · numeric(internal source; excerpt not public)
- 2008 NASA Shuttle Atlantis LOX PreValve Detent Roller Cracking PDF p.7 · numeric(internal source; excerpt not public)
- 166 NTRS 19690001059 Thrust chamber seal with 4 stacked Belleville springs PDF p.45 · numeric(internal source; excerpt not public)
- 167 NTRS 19740002611 Nonmodulating relief valve with Belleville springs 泄压 PDF p.1 · numeric(internal source; excerpt not public)
- 168 NTRS 19670015739 Shutoff valve with Belleville spring 关断阀 PDF p.10 · numeric(internal source; excerpt not public)
- 169 NTRS 19710013052 Rotor bearing support with Belleville springs 转子轴承弹性支 PDF p.15 · numeric(internal source; excerpt not public)
- 170 NTRS 19660009036 Preliminary spring design 闩锁弹簧设计 PDF p.17 · numeric(internal source; excerpt not public)
- 171 NTRS 19720023208 Apollo CSM Helium RCS relief valve 氦泄压阀 直链版 PDF p.62 · numeric(internal source; excerpt not public)
- 172 NTRS 19760007099 Disconnect clamp with Belleville washers 断接夹箍 直链版 PDF p.5 · numeric(internal source; excerpt not public)
- 173 NTRS 20080023066 LOX pre valve detent roller cracking LOX 预阀开裂失效 PDF p.7 · numeric(internal source; excerpt not public)
Cases illustrate decisions and do not constitute a specification promise for any other operating condition.
ENGINEERING REVIEW