Check the listing for details. NASA Mars Observer Launch 1992 Titan III/TOS Lapel Pin Button. Condition: New. Listed at 9.95 USD. You are bidding on:NASA Mars Observer Launch 1992 Titan III/TOS Lapel Pin ButtonNew old stock. Measures 2-3/4" x 1-3/4". ***********************An important part of space launch vehicle mission planning for a planetary mission is the integrated analysis of guidance and performance dispersions for both booster and upper stage vehicles. For the Mars Observer mission, an integrated trajectory analysis was used to maximize the scientific payload and to minimize injection errors by optimizing the energy management of both vehicles. This was accomplished by designing the Titan III booster vehicle to inject into a hyperbolic departure plane, and the Transfer Orbit Stage (TOS) to correct any booster dispersions. An integrated Monte Carlo analysis of the performance and guidance dispersions of both vehicles provided sensitivities, an evaluation of their guidance schemes and an injection error covariance matrix. The polynomial guidance schemes used for the Titan III variable flight azimuth computations and the TOS solid rocket motor ignition time and burn direction derivations accounted for a wide variation of launch times, performance dispersions, and target conditions. The Mars Observer spacecraft was launched on 25 September 1992 on the Titan III/TOS vehicle. The post flight analysis indicated that a near perfect park orbit injection was achieved, followed by a trans-Mars injection with less than 2sigma errors.*********************************************************PLEASE READ: I buy mostly estates, close outs, shelf pulls, and auction items. As the history of the item is not always known. I will describe all of my items listed to the best of my ability, if there are any flaws to the item it will be noted in the listing and photos of the flaw shown. At times I may miss a flaw, as I am only human. Please contact me and I will make it right and make sure that you are happy with you interaction and purchase from Big Man Tim's Treasures. Please see all photos and ask any questions BEFORE purchasing. "FREE SHIPPING"Love this item? Check out the other NASA items in my Ebay store!Please check back on a regular basis, as we list new items daily!!HAPPY BIDDING!041922/EP Warehouse