Dream Chaser

by Stephen Miller, Sierra Nevada Corporation

Thermal analysis of Dream ChaserThe Dream Chaser spacecraft is a reusable, lifting-body vehicle capable of traveling to low Earth orbit and landing on a runway, currently in development by Sierra Nevada Corporation (SNC) Space Systems of Colorado. The engineers at SNC use Thermal Desktop to perform system-level and detailed thermal analysis of the Dream Chaser spacecraft, making use of the following advanced features:

  • The Boundary Condition Mapper is used to map transient reentry heat loads and pressures generated using external computational fluid dynamics (CFD) to the vehicle model.
  •  User-controllable logic (controlled by the Case Set Manager) is used to model non-linear events such as switching on/off avionics boxes and to simplify changing between hot and cold environments.
  • Liquid and gaseous flow loops are simulated using simple one-way thermal networks and FloCAD.
  • Tag Sets are used to simplify connecting assembly-level meshes in the system-level model.
  • The model uses a wide range of thermophysical (anisotropic, temperature- and pressure-dependent) and optical properties.
  • The vehicle’s solar arrays track the sun using Articulators
  • The Stack Manger is used to easily generate aggregate properties for thermal protection system (TPS) multi-material insulation.

Click here to learn more about the Dream Chaser spacecraft

 

Thermal Desktop, RadCAD, and TD Direct in-class training

Date: April 9-12, 2019, 8:00 a.m. to 5:00 p.m., daily
Location: Lakewood, CO

Registration deadline: March 27, 2019

CRTech will be hosting introductory training for Thermal Desktop, RadCAD, and TD Direct. Lecture and hands-on tutorials introduce you to basic Thermal Desktop and RadCAD usage and provide practice building models and interpreting results. The class will also introduce you to the SpaceClaim CAD interface and advanced meshing tools in TD Direct. The specific location of the training will be provided upon registration.

Daily Schedule

Day 1 and 2: Introduction to Thermal Desktop and SINDA/FLUINT
Day 3: Introduction to RadCAD
Day 4: Introduction to TD Direct

To learn more about this class and to register, visit our Training Page.