Nelson Engineering designs and analyzes complex facilities and aerospace ground support mechanical systems. We perform planning studies, project scoping, requirements development, and two- and three-dimensional (2D/3D) computer-aided design and Building Information Modeling (BIM). Design tools we use to generate models and drawings include Autodesk AutoCAD and Revit as well as PTC Creo. We write specifications using SpecsIntact.

Solutions Delivered

HVAC Renovations
Propellant Systems
Process Air and Gases
Pneumatic Systems
Clean Rooms


Our typical projects follow the systems engineering approach to design development. Clients provide requirements that we document, track and trace to each solution we design. We measure design progress collaboratively with our clients through iterative design reviews at preliminary, critical and final design completion milestones. At each milestone, we receive and disposition stakeholder inputs to ensure satisfaction of owner project requirements.

System Design and Analysis:

  • Heating, Ventilating, and Air Conditioning (HVAC)
  • Environmental Control System (ECS)
  • Fire protection
  • High pressure gasses (nitrogen, helium)
  • Hypergolic and cryogenic propellants
  • Process water
  • Process cooling and heating
  • Vacuum and pneumatic
  • Thermal, vacuum chambers
  • Building mechanical and plumbing


  • Finite element analysis
  • Computational fluid dynamics
  • Fluid flow modeling
  • 3D Matterport scans
  • Energy efficiency analysis
  • Clash detection through software
  • Trade studies


Our history of working for clients along the Space Coast has allowed our mechanical team to develop a varied set of highly technical design skills where each project requiring a unique solution has become the norm. From large scale process mechanical or cryogenic systems to economical HVAC designs for office spaces, our engineers apply the same dedicated focus to client value on all projects.“

Jason Menzies, PE

Director of Mechanical Engineering


NASA Vehicle Assembly Building

NASA KSC Vehicle Assembly Building High Bay 3 Environmental Control System

New design provides a constant, controlled source of purge air for manufacturing operations. New mechanical service to 12 separate circuits with varying flow rate, temperature and humidity requirements and includes redundancy and design-for-maintenance (DFM).

NASA Launch Complex 41

U.S. Air Force CCAFS Launch Complex 41 Site Modifications

Design-build project including new propellant and acoustical suppression water systems. Our responsibility includes civil, electrical, communications, fire alarm, fixed water spray, and mechanical piping designs.
AUTEC Command and Control Building Chiller

AUTEC Command and Control Building HVAC Renovations

HVAC renovation designs and construction phases over several years to support budgetary requirements. HVAC scope includes cooling, heating and ventilation generation and distribution equipment including a modern energy management system/ECS.
Lab Image

Space Station Processing Facility Offline Science Processing Area Ammonia Vapor Containment Facility

NASA KSC facility renovation and expansion with new laboratories including mechanical and fire protection services to meet the goals of the Mars 2020 program.