1 / 6

Orbital Transfer Vehicle (OTV) Power Systems

Orbital Transfer Vehicle (OTV) Power Systems. Ian Meginnis February 12, 2009 Group Leader - Power Systems Phase Leader - Translunar Injection. OTV Solar Arrays. Two, circular Ultraflex solar arrays from Able Engineering Based on 2kW power needs: Total Deployed Area = 6.67m 2

toya
Download Presentation

Orbital Transfer Vehicle (OTV) Power Systems

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Orbital Transfer Vehicle (OTV) Power Systems Ian Meginnis February 12, 2009 Group Leader - Power Systems Phase Leader - Translunar Injection Ian Meginnis Power Systems

  2. OTV Solar Arrays Ian Meginnis Power Systems • Two, circular Ultraflex solar arrays from Able Engineering • Based on 2kW power needs: • Total Deployed Area = 6.67m2 • Total Stowed Volume = 0.068m3 • Total Mass = 13.3kg • Total Cost = $2 million • Structural Requirements • Stowed Maximum Acceleration: 25g normal; 30g lateral • Deployed Maximum Acceleration: 0.1g (all axes) • Lunar lander batteries can support 2kW of OTV operations for up to 50mins during periods of darkness

  3. OTV Power Configuration Solar Array <200V Solar Array Acronym Definitions: PCDU - Power Conditioning and Distribution Unit PPU - Power Processing Unit LL - Lunar Lander DC - Direct Current Note: Not to scale Ian Meginnis Power Systems Battery (LL) DC-DC Converters Individual OTV Components PCDU 100V 100V PPU (Electric Propulsion)

  4. Backup Slide Ian Meginnis Power Systems • Calculation of Solar Array Dimensions • Solar Array Mass: • Total Power Consumption: 2kW • Solar Array Power Density: 150W/kg • 2000W / 150W/kg = 13.3kg • Solar Array Storage Volume: • Thickness: 0.102m • Height: 0.326m • Radius: 1.03m • 0.102m x 0.326m x 1.03m = 0.0342m3 • Solar Array Cost: • Cost/Watt: $1000/W • 2000W x $1000/W = $2 million

  5. Backup Slide (cont.) Ian Meginnis Power Systems • PCDU Specifications • Terma Power Management and Distribution System • Power Capacity: 2kW • Voltage Output: 100V • Mass: 14kg • Volume: 0.0247m3

  6. Backup Slide (cont.) Ian Meginnis Power Systems • DC-DC Converter Information • 100 VDC Input Spacecraft Bus, Radiation Hardened • Produced by Modular Devices Incorporated • Available power output: 6.5W-80W • Various output voltages available • Separate DC-DC converter used for each device • All converters integrated into single-box design

More Related