Kelly leffel 2 5 09
This presentation is the property of its rightful owner.
Sponsored Links
1 / 7

Kelly Leffel 2/5/09 PowerPoint PPT Presentation


  • 40 Views
  • Uploaded on
  • Presentation posted in: General

Kelly Leffel 2/5/09. Structures and Thermal Lunar Descent Phase. 1. Mass – Volume. Lander total wet mass = 275 kg Current available volume = 2.74 cubic meters Current volume of equipment = .26 cubic meters. Lander Model and Moments of Inertia. Ixx = Iyy = 271 kg-m^2 Izz = 464 kg-m^2.

Download Presentation

Kelly Leffel 2/5/09

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Kelly leffel 2 5 09

Kelly Leffel2/5/09

Structures and Thermal

Lunar Descent Phase

1

Kelly Leffel Structures and Thermal


Mass volume

Mass – Volume

  • Lander total wet mass = 275 kg

  • Current available volume = 2.74 cubic meters

  • Current volume of equipment = .26 cubic meters

Kelly Leffel Structures and Thermal


Lander model and moments of inertia

Lander Model and Moments of Inertia

Kelly Leffel Structures and Thermal

Ixx=Iyy = 271 kg-m^2

Izz = 464 kg-m^2


Back up slides

BACK-UP SLIDES

Kelly Leffel Structures and Thermal


Kelly leffel 2 5 09

Mass – Volume Continued

5

Kelly Leffel Structures and Thermal


Volume equations

Volume Equations

Kelly Leffel Structures and Thermal

Surface Area(SA) = pi*R*S + pi*R^2 – pi*r*s

Volume(V) = 1/3 * pi * R^2 * H – 1/3 *pi*r^2

Available Volume = V – SA*thickness of aluminum


Moments of inertia

Moments of Inertia

Ixx = Iyy = m/4 * (1.5 *r ^2 + h^2) = 271 kg – m^2

Izz = 3 *m*r^2/4 = 464 kg – m^2

Ixy = Iyz = 3*m*r^2/8 = -232 kg – m^2

Ixz=Izx=Iyz=Izy = -90 kg-m^2

7

Kelly Leffel Structures and Thermal


  • Login