1. ALTERNATIVE MECHANICALS DVA1 Meeting at NSF Arlington VA April 15-16, 2010 Matt Fleming Contributions from Jack Welch Roger Schultz Gordon Lacy

2. Image of current TDP Concept DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 2 of 43

3. TDP Pedestal Mount & Frame DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 3 of 43

4. ASAKAP 12m CETC54 DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 4 of 27

5. KAT7 Mount DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 5 of 27 KAT7 BAE (previously IST Dynamics)

6. People – Antenna Structures - BAE GD SatComCobham/ Patriot

7. Antedo mount DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 7 of 27 Roger Schultz

8. CETC54 15m DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 8 of 27

9. CETC54 15m Mount DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 9 of 27 Elevation Part Azimuth Part Pedestal

10. Panel Type 15m DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 10 of 27 Roger Schultz

11. Panel Type 15m DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 11 of 27 Roger Schultz

12. Panel Layout Roger Schultz for DVA-1 DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 12 of 27 Roger Schultz suggests near rectangles at large end

13. Panels for 3000 Antennas DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 13 of 27 Panels should be designed for max area and container transport Support structure should be rectangular space frame with nodes allong panel seams Matt’s suggests throw away pie shape concept and use rectangular panels Still make use of throuted design for El axis near reflector. Yes each panel is unique and tooling will be very expensive

14. Antenna Design Drivers 1Must achieve survival. ( 100 mph wind ) 2 Low cost per unit area of aperture. ( good sky coverage ) ( installed ) ( low cost materials, low mass design, low fabrication labor ) ( favors symmetric ) 3Very low operational cost for a 30 year life ( very few maintenance visits required ) 4Frequency range of 0.3 to 10 GHz with WBSPF ( 3.5m Gregorian secondary ) ( favors offset ) 5Excellent A e / T sys. ( accurate surfaces, controlled spillover, low diffraction ) ( favors offset ) 6Exceptional dynamic range. ( very rigid surfaces, very good pointing, ) pt source sensitivity survey survey speed Performance vs Cost Tradeoffs DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 14 of 43

15. Questions DVA1, NSF, Arlington, 2010-04-16 Matt Fleming slide 15 of 43