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    <title>Advanced Primitive — Aviation</title>
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    <description>Airframes, engines, avionics and flight test campaigns followed from first flight through fleet maintenance, certification and the fixes nobody advertises.</description>
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      <title>Analysis: What the B-21&apos;s Flight-Test Pace Says About the Fielding Schedule</title>
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      <description><![CDATA[B-21 first flew November 2023 with a second jet in test during 2024. The ramp priced into the Air Force budget now rests on test evidence — and the full-rate decision date is unstated.]]></description>
      <pubDate>Mon, 24 Aug 2026 08:52:40 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>How Milestone C Turns an Aircraft Program From Prototype to Production</title>
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      <description><![CDATA[The Pentagon's production go/no-go gate, explained through the Air Force's T-7A Red Hawk trainer, which cleared it in April 2026 a year behind its original plan.]]></description>
      <pubDate>Mon, 10 Aug 2026 08:38:57 GMT</pubDate>
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      <title>Measuring Radar Cross Section: Chambers, Ranges and dBSm</title>
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      <description><![CDATA[Radar cross section explained: anechoic chambers, range testing, dBSm numbers and the F-117 history behind low observable aircraft measurement.]]></description>
      <pubDate>Wed, 22 Jul 2026 04:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>How the Military Measures a Helicopter&apos;s Remaining Life</title>
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      <description><![CDATA[Helicopter service life explained: fatigue spectrums vs. flight hours vs. calendar age, and how SLEP programs keep CH-47 and UH-60 fleets flying.]]></description>
      <pubDate>Mon, 29 Jun 2026 04:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>Why Supersonic Flight Over Land Is Banned in America</title>
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      <description><![CDATA[Why 14 CFR 91.817 bans civil supersonic flight over US land, and how the X-59 and Boom's XB-1 could change the sonic boom rules.]]></description>
      <pubDate>Sun, 07 Jun 2026 04:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>Inside the Air Force Split: Procurement vs. Sustainment Dollars</title>
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      <description><![CDATA[How the Air Force budget splits between procurement and sustainment, why O&S eats about 70 percent of life-cycle cost, and what flying-hour funding shows.]]></description>
      <pubDate>Fri, 15 May 2026 04:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>MOSA and Open Mission Systems: Why Openness Wins</title>
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      <description><![CDATA[MOSA explained: how open mission systems architectures, HOST/T and SOSA standards speed military avionics upgrades and end vendor lock-in.]]></description>
      <pubDate>Wed, 22 Apr 2026 04:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>T-7A Red Hawk and the Air Force Pilot Production Bottleneck</title>
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      <description><![CDATA[T-7A Red Hawk status, ejection seat delays and the Air Force pilot production bottleneck, from T-38 fleet age to the SUPT training pipeline.]]></description>
      <pubDate>Tue, 31 Mar 2026 04:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
      <category>Aviation</category>
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      <title>How IFF Interrogation Keeps Friendlies Apart in Combat</title>
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      <description><![CDATA[IFF Mode 4/5 interrogation explained: how encrypted transponders keep allied aircraft from being shot down, and what happens when the system fails.]]></description>
      <pubDate>Sun, 08 Mar 2026 05:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>Why Engine Depots Are Backed Up and Availability Is Falling</title>
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      <description><![CDATA[Why jet engine depot maintenance queues stretch past standards and drag down fleet availability, per GAO reporting on the F135 and F110.]]></description>
      <pubDate>Fri, 13 Feb 2026 05:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>Boom vs. Probe and Drogue: How Aerial Refueling Differs</title>
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      <description><![CDATA[Flying boom vs. probe-and-drogue aerial refueling: how the methods differ, why the Navy and Air Force split, and how old the tanker fleet is.]]></description>
      <pubDate>Thu, 22 Jan 2026 05:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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      <title>How Ejection Seats Are Tested and Certified</title>
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      <description><![CDATA[How ejection seats are tested and certified: dummy trials, sled speeds, canopy jettison and the Martin-Baker and ACES test regimes explained.]]></description>
      <pubDate>Tue, 30 Dec 2025 05:00:00 GMT</pubDate>
      <dc:creator>Nils Andersen</dc:creator>
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