Landing Gear - Lamar 3/1/96 Progress Report

From:David Skeelsdmskeels@ih2000.net

Autocad Drawings - David Skeels & David Coler

The initial 2D and 3D AutoCad drawings have been refined to determine the maximum possible landing gear extension in the horizontal direction. Two scenarios have been investigated: hinge attachment point at the second floor of the structure and at the top of the structure. The analysis shows that if the attachment point is at the top of the structure, around 15 cm of horizontal extension is gained over the second floor attachment point, and better utilization of space in the launch vehicle is made. Ronnie Baccus was contacted about the proposed changes, and it was agreed that since the structure was not designed to withstand severe loading at the top, we would first investigate attachment at the second floor to see if enough extension can be gained to prevent rolling of the vehicle on impact. In the event that more extension is required, we will further discuss the issue.

Due to difficulty in gaining access to Pro/Engineer, AutoCad has replaced it's position in the design process for this semester. Status: 98% complete (excluding revisions)

Energy Dissipation Systems Performance Specifications - David Coler

For the most part, we have obtained enough information on the systems to feed into the dynamic model for analysis. Preliminarily it looks like the yielding rod system may not be required for horizontal energy dissipation, but that the metal foam should suffice by itself. Duocel has been contacted for additional information on the metal foam, but information has not been received yet. Status: 95% complete

Joints Research and Design - Ganesh Venkataramani

Research on joints is going very slowly. In the absence of more research information, the design of the joints will be started this weekend based on information from a previous trip to NASA. Status: 50% complete

Dynamic Simulation - David Skeels & David Coler

Utilizing the 3D AutoCad model generated and the vehicle properties published last semester, a dynamic model using ADAMS will be generated and analyzed. We will be going to the Maritime Technology Center (MTC) Friday afternoon, March 1, to begin learning the package and importing the 3D AutoCad model into it. Staff from the MTC (who have done this before) have volunteered to assist in the process. The model will be analyzed to determine behavior on impact, and revised accordingly to eliminate rolling over. Status: Ahead of scheduled start date

Next week:

* Write midterm major progress report for our class, to be used as the backbone for the midterm design report for the TSGC project

* Continue dynamic analysis

* Continue joint design

current mass: 15 kg
power: minimal-TBD