Panel gaps and pilot bonds: IWM's Blackbird week
Curator Emily Charles explains why the SR-71's panels leave room for the heat of flight at IWM Duxford.
Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.
Why Are There Gaps In This SR-71 Blackbird?
An aircraft that changes size in flight gives Imperial War Museums a rather good starting point. Beside the SR-71 Blackbird at Duxford, curator Emily Charles points out gaps between its panels: room for the aircraft to expand as it heats up, before contracting again on the ground.
"Why Are There Gaps In This SR-71 Blackbird?" was the most-watched of four new uploads, reaching about 41,000 views. Its comments take an engineering detour of their own, with several viewers discussing the black paint's role in dissipating heat and questioning the clip's explanation about radar. Others focus on the practical challenge of sealing an aircraft that expands and contracts.
The rest of the week's uploads stay with the Blackbird but change the question. One examines why it never flew over the Soviet Union or China; another explores the camaraderie between its pilots and crew. The newest, "The MOST Amazing Thing About The SR-71 Blackbird", turns to the longevity of its records and currently has the strongest daily viewing on the channel.
The audience grew modestly, adding around a thousand subscribers over the week, although daily views are running at roughly half their usual level. The Tank Museum had a larger weekly audience, while Royal Armouries had a quieter week for views than IWM.
Beyond the aircraft, "Was Suez Doomed To Fail?" remains among IWM's busiest videos. Its longer account follows the secret invasion plan through to Britain's retreat, a change of scale from panel joints to the limits of national power.
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What viewers say
Sealing joints and fuel or hydraulic systems must have been a nightmare
@ChoctawCoyoteSee it on YouTubeIt's a gorgeous machine
@pargarasSee it on YouTubeAccording to my prized copy of Paul Crickmore's book Lockheed Blackbird, the black paint was an attempt to help reduce airframe temperatures. As stated in Kirchoff's Law of Radiation, a good heat absorber is also a good emitter.
@Martinm1-x1See it on YouTube
Public comments from the video's page on YouTube
The videos drawing views on Imperial War Museums right now
- Channel
- Imperial War Museums
- Subscribers
- 884,000 ▲ 1,000 this week
- Channel views, last 7 days
- 934,240
- Videos published this week
- 4
- Video published
- October 28, 2026
- Video views so far
- 41,291
- Views on its first day
- 20,972
The numbers
Here is how Imperial War Museums' audience and uploads moved this week.
💡 Test your knowledge
Which metal does Emily Charles identify as the Blackbird's predominant construction material?
Charles explains that the Blackbird is predominantly made from titanium, which can withstand great heat and pressure.






