1 / 8

ESTREMO/WXT Initiative: AAS-I Contribution

ESTREMO/WXT Initiative: AAS-I Contribution. ESTREMO/WXT: Preliminary Consideration. For preliminary ESTREMO feasibility evaluation the basic consideration are about: Launch capability (mass, firing volume, firing height) of Vega for LEO Payload Accommodation Fast pointing

roanna-graham
Download Presentation

ESTREMO/WXT Initiative: AAS-I Contribution

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. ESTREMO/WXT Initiative: AAS-I Contribution

  2. ESTREMO/WXT: Preliminary Consideration • For preliminary ESTREMO feasibility evaluation the basic consideration are about: • Launch capability (mass, firing volume, firing height) of Vega for LEO • Payload Accommodation • Fast pointing • The more challenging engineeringaspect to be considered is the autonomous fast pointing (req. 60° in 3’ with a goal of 60° in 1’). The fast pointing desiderated dynamics • implies Moment of Inertia Minimization (as compact as possible configuration) • can imply utilization of special equipment (e.g. Control Moment Gyroscope) • For fast pointing the use of off-the-shelf standard equipments (Reaction Wheels) is recommended, mainly for cost, reliability and availability. • A very preliminary AAS-I trade-off considers a maximum of 5000 kgm2 as the threshold for the utilization of standard Reaction Wheels (RW). • In order to have confidence about the utilization of standard RWs preliminary MoI of a conceptual configuration of ESTREMO has been evaluated.

  3. ESTREMO/WXT: VEGA References Vega is an European four-stage launcher, tailored to carry the growing number of small scientific spacecraft and other lighter-weight payloads under development or planned worldwide. Vega's lift capability target to arrive at the ESTREMO orbit (700 km equatorial - circular) is 2200 kg.

  4. ESTREMO/WXT: Preliminary Configuration 1 of 2 Launch Configuration Operative Configuration

  5. ESTREMO/WFC: Preliminary Configuration 2 of 2 Optics TES + Detector + CCD on the bottom (hide by the structure) Telescope Structure WFI Mask WFI Detector Reaction Wheels

  6. ESTREMO: Preliminary Mass Budget

  7. ESTREMO: Mass & MoI System Mass Budget System MoI Evaluation

  8. Final Summary With the available information a preliminary ESTREMO configuration appears compatible with: • Vega Launch capability • Payload Accommodation needs • Fast pointing with standard equipments

More Related