‘They can’t not have noticed’: Why does Jeff Bezos’s rocket look like that?

Experts weigh in on the ‘anthropomorphic’ design of the Amazon head’s Blue Origin rocket

Amazon founder Jeff Bezos, accompanied by three crewmates, has flown to space aboard his space venture Blue Origin's New Shepard launch vehicle and returned safely to Earth. Video: Blue Origin

 

Jeff Bezos’s 11-minute trip aboard a Blue Origin rocket to the edge of space on Tuesday left the world’s richest man feeling “unbelievably good” and his crew “very happy”. But afterwards, as he wondered aloud how fast he could refuel, the rest of the world was left pondering just why the New Shepard rocket had such a distinctive shape.

As social media erupted with innuendo, we contacted a few experts to find out why it looked, in the words of one astrophysicist, so “anthropomorphic”.

At one major research institution, the press officer refers us to the gender-studies department, but Jonathan McDowell, an astronomer at the Harvard-Smithsonian Center for Astrophysics, is able to shed some light on the topic.

New Shepard consists of a mushroom-like crew capsule that flares out over a long shaft, called a booster. The rounded top appears more bulbous than that of many other rockets, but it’s not unique. “There’s a long history of what we call hammerhead rockets,” on which the capsule’s diameter is wider than the booster, says McDowell. “If you’re careful, it actually has perfectly fine aerodynamics.”

Jeff Bezos and his crew taking off on Tuesday aboard Blue Origin’s New Shepard rocket. Photograph: Blue Origin/EPA
Rocket thrust: Jeff Bezos and his crew taking off on Tuesday aboard New Shepard. Photograph: Blue Origin/EPA

Just like the tips of passenger and military jets, capsules come in all different shapes. New Shepard’s interior is designed to “maximize the interior volume” to hold six passengers, says Laura Forczyk, the owner of Astralytical, a space analytics company. It also needs a “big, flat bottom” for stable re-entry, McDowell says.

“They went through a lot of iterations coming up with the perfect shape to give them the most volume, the best windows, and [a design that] wouldn’t kill anyone onboard,” says the astrophysicist Scott Manley. “And this is the shape they came up with, this dome shape.”

As for the booster, engineers work to minimise its mass, making it as small as possible. “It is easier to balance a long and skinny cylinder than it is to balance a thicker, fatter cylinder,” Forczyk says.

These competing concerns can lead to a capsule that is a bit wider than might originally have been envisioned. “It comes down to optimising two different things and not being able to make them quite match,” McDowell says. He points to other examples of rockets with slightly flared tops, including the Atlas V Starliner, expected to launch next week.

Back on Earth: Jeff Bezos climbs out of the New Shepard capsule after his space flight. Photograph: Blue Origin/AFP via Getty
Back on Earth: Jeff Bezos climbs out of the New Shepard capsule after his space flight. Photograph: Blue Origin/AFP via Getty

Adding to those “anthropomorphic” qualities is a ridge near the top that is “very, very obvious”, Manley says. That’s there to accommodate a “ring-shaped fin” that is fundamental to the re-entry process, counteracting the effects of the fin at the bottom as the booster travels in reverse.

All this adds up to some particularly memorable optics. Was there any subtle aesthetic messaging involved? “I don’t know if I would have made the design this way, but I’m sure it was driven entirely by physics” as well as cost savings, says Forczyk.

Still, “they can’t not have noticed”, McDowell says. “You’ve got to imagine there was a meeting where someone went, ‘Do you really want to fly looking like this?’ But I’m guessing an engineer got up and said, ‘This is what the math says. This is the optimum configuration. So this is what we’re gonna fly.’” – Guardian

The Irish Times Logo
Commenting on The Irish Times has changed. To comment you must now be an Irish Times subscriber.
SUBSCRIBE
GO BACK
Error Image
The account details entered are not currently associated with an Irish Times subscription. Please subscribe to sign in to comment.
Comment Sign In

Forgot password?
The Irish Times Logo
Thank you
You should receive instructions for resetting your password. When you have reset your password, you can Sign In.
The Irish Times Logo
Please choose a screen name. This name will appear beside any comments you post. Your screen name should follow the standards set out in our community standards.
Screen Name Selection

Hello

Please choose a screen name. This name will appear beside any comments you post. Your screen name should follow the standards set out in our community standards.

The Irish Times Logo
Commenting on The Irish Times has changed. To comment you must now be an Irish Times subscriber.
SUBSCRIBE
Forgot Password
Please enter your email address so we can send you a link to reset your password.

Sign In

Your Comments
We reserve the right to remove any content at any time from this Community, including without limitation if it violates the Community Standards. We ask that you report content that you in good faith believe violates the above rules by clicking the Flag link next to the offending comment or by filling out this form. New comments are only accepted for 3 days from the date of publication.