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Design Notes

The Ambition-III is a spaceshot rocket designed for maximum efficiency. As a "sub-minimum diameter" rocket, its body and motor are one and the same, leaving no room for unnecessary weight. 

Major Systems

Click on a system for more information

Technical Specifications

Type: Ammonium Perchlorate Composite Propellant
Mass: 76.0 kg (167.5 lbs)

Nozzle: Graphite potted in MSC
Thrust Chamber: S-2 Fiberglass
Insulative Liners and Bulk
head: MSC

Nose Cone: Fiberglass reinforced MSC
Nose Cone Tip: 3D-Printed Inconel Alloy

Gross Lift-Off Mass (GLOM): 184.00 kg (405.65 lbs)
Burnout Mass: 88.50 kg (195.11 lbs)

*Note: MSC refers to our insulative material, our experimental "Microsphere Composite," comprised of either Epoxy or Polyurethane and glass microspheres.


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Nose Cone

Nose Cone


Fast Facts:

  • Nose Cone Profile: Von Karman Ogive

  • Material: Fiberglass reinforced polymer


The nose cone has been optimized to minimize both mass and drag. The nose cone body is made of radio-transparent fiberglass for our avionics systems and tipped with a "bluffed" Inconel tip to survive aerodynamic heating.  



Fast Facts:

  • Propellant Type: Ammonium Perchlorate Composite Propellant (APCP)

  • The Space Shuttle Solid Rocket Boosters (SRB) used a type of APCP

The propellant has Ammonium perchlorate as an oxygen source, aluminum powder as fuel, and HTPB (polymer resin) as fuel and binding material. The "grain" has a hollow core to burn from the inside out. 

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Thrust Chamber

Thrust Chamber

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Fast Facts:

  • Material: S-2 Fiberglass

The thrust chamber provides the primary structure of the rocket. It must be strong and rigid to contain the heat and pressure of the motor burn.



Fast Facts:

  • De Laval Convergent-Divergent nozzle

  • Material: Medium and Fine grain graphite

The nozzle facilitates a thermodynamic trade off, accelerating the hot and high temperature gasses to an ambient pressure high velocity stream. The two grades of graphite provide a balance of cost effectiveness and high stress performance.


Composite Fins


Fast Facts:

  • Material: Fiberglass and MSC

  • Number of Fins: 4

  • Fin Shape: Trapezoidal

The fins keep the rocket flying straight. They are placed in the rear of the rocket, moving the center of pressure well behind the center of gravity, ensuring flight stability.

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