The Crawler

by Mark Tully
(Kitchener ON Canada)

The Crawler

The Crawler

How did the Space Shuttle, 2 external rocket boosters and the main fuel tank (weighing 4.4 million pounds) get to the launch pad? They were transported there on top of the 6 million pound "Crawler"! The Crawler is 131 feet by 114 feet and has a lifting capacity of 18 million pounds (so lots of room to spare). It travels, loaded, at a whopping 1 mile per hour. I put a man on the upper right deck to give you an idea of just how big this monster is. The height of The Crawler can vary from 20 feet to 26 feet because part of the trip to the launch pad involves climbing a slight incline so the rear can be hydraulically lifted to keep the shuttle level (can you imagine if it fell over!!). I noticed in the reference picture I used that there were seagulls hanging out in front of the machine not bothered at all by the approach of 10 million pounds of mega beast. Once they drop off the Shuttle and Boosters they can "race" back at 2 mph. Each tread is made up of 57 "shoes" that weigh 1,984 pounds each. Pretty amazing stuff - go NASA!


Keep Drawing! Have Fun!

Mark Tully
Kitchener ON Canada

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Jun 05, 2019
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to Mark
by: Ivan

You're most welcome Mark :)

Jun 05, 2019
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Thank you.
by: Mark Tully

Thanks for your positive feedback Ivan. Very much appreciated.

Jun 05, 2019
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to Mark Tully
by: Ivan

Mark, your artwork with such detailed explanation would perfectly suit for a book. With your extensive knowledge, maybe you should consider to really create a book with your computer art and accompanying texts. Kids would love it and many enthusiast would love it too. Thank you for sharing your knowledge and artwork with us :)

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