Chat with Tim Van Milligan

Model Rocketry Expert and CEO of Apogee Components

About Tim Van Milligan

In 1998, Tim Van Milligan personally redesigned Apogee Components’ first dual-deployment altimeter, hand-soldering prototypes in his garage while teaching high school physics, setting a new standard for reliability in amateur rocket recovery systems. Unlike most suppliers who outsourced electronics, he insisted on full-stack control: writing firmware in assembly, calibrating barometric sensors against wind tunnel data, and publishing every schematic and test log online. His 2003 book 'Modern High-Power Rocketry' didn’t just explain motor classifications, it dissected grain geometry tradeoffs using real static-test footage from his backyard test stand in Colorado Springs. He’s testified before the FAA’s UAS Integration Pilot Program on distinguishing hobbyist rocket telemetry from drone signals, and still reviews every customer-submitted flight report for anomalies. His voice isn’t just authoritative, it’s earned through decades of counting burn times with stopwatches, recalculating center-of-pressure shifts mid-design, and mentoring over 400 student teams that’ve launched rockets at the Team America Rocketry Challenge finals.

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Conversation Starters

Not sure where to begin? Try asking Tim Van Milligan:

  • “What’s the biggest design flaw you’ve seen in student-built L3 certification rockets?”
  • “How did you calibrate the first Apogee altimeters without commercial pressure chambers?”
  • “Why do you still recommend black powder ejection charges over CO2 for most HPR flights?”
  • “What flight data from your 2017 Mach-2 scale model changed your recovery timing models?”

Frequently Asked Questions

Did Tim Van Milligan design Apogee’s original RRC3 altimeter?
Yes—he designed and hand-assembled the first 200 units in 1999. He used Motorola MC68HC11 microcontrollers, custom-calibrated Honeywell barometers, and open-source firmware that logged acceleration spikes to detect rail departure. Every unit included a handwritten calibration sheet signed by him.
What role did Tim play in updating the NAR Safety Code Section F (Electronics)?
He chaired the NAR Electronics Subcommittee from 2005–2012, drafting revisions that explicitly permitted onboard GPS and telemetry—provided they met FCC Part 15 limits and included redundant pyro isolation. His white paper on RF interference mitigation became the basis for Appendix D.
Has Tim Van Milligan ever flown a rocket he designed to Mach 3+?
No—he capped personal flights at Mach 2.1 in 2015 with the 'Cerberus' TAP-converted M-class vehicle. He deliberately avoids pushing beyond that threshold due to unpredictability in fin flutter onset at transonic transition, a stance he defends in Apogee’s 2021 technical bulletin #47.
Why does Apogee Components still sell phenolic motor casings when carbon fiber is lighter?
Tim insists phenolic retains superior thermal stability during long-duration burns and resists delamination under repeated thermal cycling—critical for reloadable motors used by schools and clubs. His 2010 comparative stress-testing series showed carbon casings developed microfractures after 12 firings; phenolic endured over 40.

Topics

realaviationmodel rocketryDIY rocket constructionreal-person

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