AEROSPACE & DEFENSE
Built for programs where compliance failures cost millions.
Requirements management for aerospace engineers, defense contractors, and government programs — with the security clearance to match.
AEROSPACE & DEFENSE
Built for programs where compliance failures cost millions.
Requirements management for aerospace engineers, defense contractors, and government programs — with the security clearance to match.
AEROSPACE & DEFENSE
Built for programs where compliance failures cost millions.
Requirements management for aerospace engineers, defense contractors, and government programs — with the security clearance to match.
Trusted by the U.S. DoW
AEROSPACE & DEFENSE FEATURES
Stell’s Defense & Aerospace
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NSLS Level 0
V2REVIEWTable of Contents
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3.0 System Performance Requirements
3.0.1 National Space Launch System Performance Requirements
The National Space Launch System (NSLS) is designed to meet stringent performance requirements that ensure mission success, safety, and reliability.
3.1 General Performance
3.1.1 NSLS Multi-Scenario Performance Requirements
The NSLS must demonstrate a high level of performance across multiple mission scenarios.
3.1.2 Payload Capacity
The NSLS shall provide a minimum payload capacity of 10,000 kg to GTO and 25,000 kg to LEO.
| Name | Statement | Status | Method | Child | |
|---|---|---|---|---|---|
| 1 | Payload Capacity | The NSLS shall provide a minimum payload capacity of 10,000 kg to GTO... | REVIEW | ANALYSIS | +1 |
| 2 | Reliability Metrics | The NSLS shall achieve a minimum launch reliability rate of 98%... | REVIEW | DEMONSTRATION | |
| 3 | Rapid Deployment Capability | The NSLS shall be designed to support an on-demand launch capability... | REVIEW | MODELING | |
| 4 | Weather Constraints | The NSLS shall be capable of launching under a range of weather conditions... | REVIEW | TEST |
Crew Vehicle Systems
DRAFT| Requirement Name | Requirement Statement | Evidence | Method | Task | Collab | |
|---|---|---|---|---|---|---|
| 1 | Rotational Velocity Limits | The CTS shall provide orthostatic protection to the crewmember with a lower body compression garment from the ankle to the top of the waist... | DEMONSTRATION | TASK3 › | ||
| 2 | Sustained Cross-Coupled Rotational Accel. | The CTS shall provide orthostatic protection to the crewmember with a lower body compression garment from the ankle to the top of the waist... | ANALYSIS | TASK3 › | +1 | |
| 3 | Acceleration Rate of Change | The CTS shall provide orthostatic protection to the crewmember with a lower body compression garment from the ankle to the top of the waist... | Evidence Record | TASK3 › | ||
| 4 | Health Limits for Vibration during Dyn. | The CTS shall provide orthostatic protection to the crewmember with a lower body compression garment from the ankle to the top of the waist... | DEMONSTRATION | TASK3 › | ||
| 5 | Operability of Controls | The CTS shall provide orthostatic protection to the crewmember with a lower body compression garment from the ankle to the top of the waist... | TEST | TASK3 › | ||
| 6 | Annunciator Intelligibility | The CTS shall provide orthostatic protection to the crewmember with a lower body compression garment from the ankle to the top of the waist... | TASK3 › |
Climate Hardening
DRAFT| Title | Method | Compliance | Program | Cadence | Linked | |
|---|---|---|---|---|---|---|
| ER-001 | Hot Fire Test | TEST | COMPLIANT | MEDIUM SAT | Qualification | |
| ER-002 | Thermal Cycle Analysis | ANALYSIS | INTEND TO COMPLY | MEDIUM SAT | Production | |
| ER-003 | Vibration Screening Report | INSPECTION | COMPLIANT | E-SAT | Qualification | +1 |
| ER-004 | EMI Shielding Validation | DEMONSTRATION | INTEND TO COMPLY | MEDIUM SAT | Production | |
| ER-005 | Pressure Vessel Integrity | TEST | COMPLIANT | E-SAT | Qualification |
Thermal Control
| Name | Statement |
|---|---|
| Radiator Introduction | ... |
| Radiator Panels | ... |
| Radiator Size | ... |
The radiator system shall be monitored at all times remotely.
The radiator system shall be monitored at all times remotely.
Crew Vehicle Systems
V2DRAFT| Name | Statement | Compliance | Status | Type | Parents | |
|---|---|---|---|---|---|---|
| 1 | Rotational Velocity Limits | The CTS shall provide orthostatic protection... | INTEND TO COMPLY | DRAFT | ENVIRONMENTAL | |
| 2 | Sustained Cross-Coupled Rotational | The satellite shall be equipped... | COMPLIANT | DRAFT | SOFTWARE | +1 |
| 3 | Acceleration Rate of Change | The radiators shall be sized... | INTEND TO COMPLY | ACTIVE | DESIGN | |
| 4 | ||||||
| 5 | ||||||
| 6 | ||||||
| 7 | ||||||
| 8 |
Projects
Keep track of upcoming launches
Launch Date: June 5, 2025
Launch Date: March 11, 2025
Launch Date: November 30, 2027
Specifications
| Specification Name | Version | Level | Product | Organization | # Reqs | Last Edited | Category | |
|---|---|---|---|---|---|---|---|---|
| 1 | PS-400 | V1 | L 1 | PS-100 | Orion | 120 | 11/20/2025 | DRAFT |
| 2 | PS-400 Spec 2 | V1 | L 1 | PS-100 | Orion | 63 | 11/20/2025 | |
| 3 | Accel Rate | V1 | L 1 | Orion | 63 | 11/20/2025 | DRAFT | |
| 4 | Vibration Limits | V1 | L 2 | Orion | 63 | 11/20/2025 | ||
| 5 | Controls Operability | V1 | L 2 | Orion | 63 | 11/20/2025 | DRAFT | |
| 6 | Annunciator IQ | V1 | L 3 | Orion | 63 | 11/20/2025 |
Standards Library
| Spec # | Name |
|---|---|
| AC 20-152A | DEVELOPMENT ASSURANCE FOR AIRBORNE ELECTRONIC HARDWARE |
| SMC-S-010 | TECHNICAL REQUIREMENTS FOR ELECTRONIC PARTS |
| STD-7150.2D | PROCEDURAL REQUIREMENTS: SOFTWARE ENGINEERING |
| MIL-STD-882E | DEPARTMENT OF DEFENSE STANDARD PRACTICE: SYSTEM SAFETY |
| STD-8739.8B | TECHNICAL STANDARD: SOFTWARE ASSURANCE AND SOFTWARE SAFETY |
| STD-7120.8A | PROCEDURAL REQUIREMENTS: RESEARCH AND TECHNOLOGY PROGRAM |
| ECSS-Q-ST-40C | SPACE PRODUCT ASSURANCE: SAFETY |
| MIL-STD-810H | ENVIRONMENTAL ENGINEERING CONSIDERATIONS AND LABORATORY TESTS |
| DO-178C | SOFTWARE CONSIDERATIONS IN AIRBORNE SYSTEMS AND EQUIPMENT |
| AS9100D | QUALITY MANAGEMENT SYSTEMS FOR AVIATION, SPACE AND DEFENSE |
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Secure Architecture
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TRUST & SECURITY
U.S.-based and secure by default
Stell implements a defense-in-depth approach to meet the most stringent security requirements. All data is processed and stored on U.S.-based infrastructure.
FedRAMP
Cloud security authorization for federal government use. Assessment in progress.
CMMC L2 Certified
Full compliance with NIST 800-171 CUI protection requirements for defense contractors.
Active IL5 ATO
Authority to Operate under U.S. Space Force for impact level 5 workloads.
ITAR Compliant
All data stored on AWS GovCloud in accordance with International Traffic in Arms Regulations.
Secure Architecture
End-to-end encryption. In-boundary AI/ML processing
SOC 2 Type II
Audited controls for security, availability, and confidentiality.
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Use Stell on your program’s data
Bring a contract, RFP, or MIL-STD - we'll show you how Stell imports it, traces it, and gets you audit-ready.
BOOK A DEMO
Use Stell on your program’s data
Bring a contract, RFP, or MIL-STD - we'll show you how Stell imports it, traces it, and gets you audit-ready.