SDI ENGINEERING INC

Bellevue, WA · Aerospace · Private

Advanced morphable aerial refueling hose using novel materials and construction techniques that flatten for compact stowage

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Updated Oct 23, 2026 · sdi-eng.com

Sector: Aerospace
Headquarters: Bellevue, WA
Total capital: $8.2M

Federal grants: $800K; 1 award · 2021; Rank in peer group#17 of 77
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $7.4M; 16 awards · Defense, NASA; Rank in Aerospace#273 of 1335
Granted patents: None on recordNo USPTO grants. Applications publish after 18 months.

Capital timeline

Latest events

Nov 2021Federal grantDefense · Phase II · Innovative Methods for Improved Stowage of Aerial Refueling Hoses$800K
Nov 2021Federal contractDefense · SBIR Phase II$1.1M
Sep 2020Federal contractDefense · Research And Development$240K
Apr 2018Federal contractDefense · Research And Development Igf::ot::igf$1.0M
Apr 2016Federal contractDefense · Igf::ot::igf STTR Ph 2 - Ground Loads Predictive Analysis (glpa)$1M
Sep 2011Federal contractDefense · Topic N112-112$80K
Jul 2011Federal contractNASA · Replacement Of Faulty Dpec Card Test And Calibration$5K

Show 10 earlier federal awards

Jul 2011Federal contractNASA · Assure - Aeroelastic / Aeroservoelastic (ae/ase) Uncertainty And Reliability Engineering Capability - Is A Set Of Probabilistic Computer Programs For Isolating Uncertainties In Simulation, Manufacturing, Test, Measurement, And Test To Analysis Correlation Affecting The Ae/ase Characteristics Of Advanced Flight Vehicles In Flight And On The Ground, And For Studying The Effects Of Such Uncertainties. Assure Will Provide A Quantitative Assessment Of The Statistics Of Ae/ase Stability And Dynamic Re$425K
Aug 2010Federal contractNASA · Repair Of Stick Loader$6K
Aug 2010Federal contractDefense · R&d SBIR Topic N092-111$1.0M
Aug 2010Federal contractDefense · Repair The Joint Strike Fighter Active Controllers For The S$12K
Jan 2010Federal contractNASA · Assure - Aeroelastic / Aeroservoelastic (ae/ase) Uncertainty And Reliability Engineering Capability - Is A Set Of Probabilistic Computer Programs For Isolating Uncertainties In Simulation, Manufacturing, Test, Measurement, And Test To Analysis Correlation Affecting The Ae/ase Characteristics Of Advanced Flight Vehicles In Flight And On The Ground, And For Studying The Effects Of Such Uncertainties. Assure Will Provide A Quantitative Assessment Of The Statistics Of Ae/ase Stability And Dynamic Re$100K
Aug 2009Federal contractDefense · R&d SBIR Topic N092-111$150K
May 2008Federal contractDefense · Jsf Simulator Throttle W/integrated Electronics$146K
Aug 2007Federal contractDefense · SBIR II, AF06-320, Ground Loads Predictive Analysis$739K
Sep 2006Federal contractDefense · 200612!000432!5700!FA9101!AEDC/PKP !FA910106C0160 !a!n! !n! ! !20060929!20070930!883221723!883221723!883221723!N!STIRLING Dynamics Inc !4030 Lake Washington Blvd !kirkland !WA!98033!35940!033!53!KIRKLAND !king !WASHINGTON!+000000300000!N!N!000000649997!AD95!RDTE/OTHER Defense-eng/manuf Develop !S1 !services !000 !not Discernable !541710!E! !3! ! ! ! ! !999$650K
Sep 2006Federal contractDefense · Stirling Dynamics, Inc. SBIR Phase II - Research Into The Control Of Mr Dampers Is Proposed In Phase II Which Will Demonstrate A Fully Functional Dual Axis Inceptor Prototype, With A Smart Material Motion System In Two Axes, Including Consideration Of Flightworthy Qualification. Development Of Active Inceptors Using Smart Material Actuation Has The Potential To Reduce Unit Costs, Weight And Mechanical Complexity.$730K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Standing among 77 peers

Line = median

Aerospace · Device

Federal grants#17 · top 22%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

No founders are linked to this company yet.

Founders appear once a person is matched to the company through its own patents, grants or filings. We never infer people from social profiles.

Checked: USPTO inventors; federal award principal investigators; SEC Form D related persons · Oct 23, 2026

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What it has protected

No granted patents are on record.

USPTO usually publishes applications 18 months after filing, so recent applications may not be visible yet. Patents assigned under a different entity name won’t match.

Checked: USPTO granted patents and published applications · Oct 23, 2026

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AstronetX PBCSimilar federal contract value in Aerospace · $7.6M in contracts
PEPIN ASSOCIATES INCSimilar federal contract value in Aerospace · $7.5M in contracts
Blue Canyon Technologies Inc.Similar federal contract value in Aerospace · $7.4M in contracts
TENDEG LLCSimilar federal contract value in Aerospace · $7.3M in contracts
APPLIED MATERIAL SYSTEMS ENGINEERING, INCSimilar federal contract value in Aerospace · $7.3M in contracts

Regulatory activity · Aerospace

Sector-level, not company-level

06 Jul 2026Nondiscrimination in Federally Assisted Programs of NASA-Effectuation of Title VI of the Civil Rights Act of 1964National Aeronautics and Space Administration
01 Jul 2026Special Conditions: AMAC Aerospace, The Boeing Company Model 747- 8 Airplane; Side-Facing SeatsFederal Aviation Administration
26 Jun 2026Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous AmendmentsFederal Aviation Administration
23 Jun 2026Operating Limitations at John F. Kennedy International AirportFederal Aviation Administration
23 Jun 2026Operating Limitations at New York LaGuardia AirportFederal Aviation Administration
18 Jun 2026Special Conditions: Honeywell Aerospace US LLC, Dassault Aviation Model Falcon 900EX Airplane; Electronic System Security Protection From Unauthorized External AccessFederal Aviation Administration

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.