1、Lessons Learned Entry: 0183Lesson Info:a71 Lesson Number: 0183a71 Lesson Date: 1992-10-28a71 Submitting Organization: KSCa71 Submitted by: Lisa L. MusgraveSubject: Solid Rocket Motor (SRM) Segments Transportation Description of Driving Event: The SRM segments are transported horizontally by standard
2、 200-ton capacity railcars with hydraulic couplers. It was determined that the transportation design requirements for the transportation support equipment exceeded the capabilities of the railcars. There is concern for potential changes to the cases resulting from transportation in the horizontal po
3、sition. As part of the case joint redesign effort, studies are being conducted to determine the effect of horizontal transportation on case ovality and, in turn, the effect of ovality on the assembly process.Lesson(s) Learned: Shipment of SRM segments in horizontal position may cause cases to assume
4、 undesirable out-of-round conditions and contribute to mating difficulties.Recommendation(s): Reconfigure SRM segment transportation to preserve case shape and condition during shipment.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: Provided by IHSNot for ResaleNo repr
5、oduction or networking permitted without license from IHS-,-,-N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Flight Equipmenta71 Ground Operationsa71 HardwareAdditional Info: Approval Info: a71 Approval Date: 1994-06-06a71 Approval Name: James G. Klinea71 Approval Organization: KSC/HEIa71 Approval Phone Number: 407-867-7614Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
