Landing Gear - Lamar - Progress Report 29 Sept 95

David Skeels and Jason Gore

Lamar University Landing Gear Team Report


The long term scope of the landing gear subsystem team is to complete the design of the landing gear for this project. The landing gear will be designed to fit within the launch vehicle, which at this time is the Delta II rocket. It must attach effectively to the bus structure which is concurrently being designed by the Texas A&M structures group. The landing gear will be designed to accommodate a controlled free- fall from 10 meters above the lunar surface, and must limit the acceleration on the bus structure to no more than 10 g's. In addition, this group will also be responsible for the necessary deployment of the landing gear. The landing gear will not have to survive the lunar landing, but must only land the test equipment safely on the moon in a usable position. The parameters stated here are best estimates as of the writing of this document. Due to the evolutionary nature of this type of design project, the design of the landing gear subsystem is expected to be modified from conception to implementation to accommodate the expected evolution of the above design parameters.

The scope of the landing gear subsystem team for this semester, fall of 1995, is to begin the process of designing a feasible landing system for the lander. In specific, several conceptual designs will partially developed, a preferred conceptual design will be selected, a detailed evaluation of this preferred design will be performed, and our design and conclusions will be documented.


The project this semester began with team familiarization with the information and communication systems on the Internet to be used in the project. After gathering the necessary information on the project, a problem definition was be developed to provide direction for the project. The team will then research available information on past landing gear for lunar or other landers, and explore possible new technology that has not been used for this application. From this information, the team will develop several conceptual designs for the landing gear. Following the conceptual design development, the team will further research any necessary information needed to evaluate the feasibility and efficiency of these designs. The team will then narrow the field by selecting a few of the conceptual designs as preferred designs. Following this, the team will perform detailed evaluation of these preferred designs, and conclude by selecting the best design. The results of the design selection process and conclusions will then be documented.


Following is the work plan for this semester:
  Item                                                     Dates

  Information & Communications Systems Familiarization     9/1   - 9/12
  Problem Definition                                       9/1   - 9/21
  Research of Landing Gear Systems                         9/5   - 11/30
  Conceptual Design Development                            10/10 - 10/24
  Preliminary Evaluation of Conceptual Designs             10/24 - 11/7
  Selection of Preferred Conceptual Designs                11/7
  Detailed Evaluation of Preferred Conceptual Designs      11/7  - 11/21
  Selection of Best Design                                 11/21
  Documentation of Project Results                         11/21 - 11/28
  Preparation of Presentation of Project Results           11/21 - 11/28


Each team member will spend ten (10) hours per week this semester (15 weeks) for a total of 900 man hours for this phase of the project. These figures include in- and out-of- class time.

This budget is derived from similar past project experience of the team members. The team believes the proposed budget to be reasonable and adequate to complete our portion of the project this semester. No monetary expenses for materials or travel are expected to be incurred during this phase of the project, and the time shown above will be provided at no cost.


29 September 95
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