Archive for 2023

OPEN THREAD: Enjoy your time together.

THE NEW SPACE RACE: NASA, DARPA to launch nuclear rocket to orbit by early 2026.

It’s not my nuclear Orion though. But that’s coming.

UPDATE: A reader emails:

Everybody in comments is missing the point on the DARPA program.

NASA isn’t doing this. Neither is DARPA. That’s where the money is coming from.

Lockheed Martin will do the craft, and my company, BWXT, is doing the reactor.

Yes, this is the new streamlined contracting approach.

IT WOULD BE FUN TO WATCH:

NOTHING TO SEE HERE, MOVE ALONG: Tesla created secret team to suppress thousands of driving range complaints.

In March, Alexandre Ponsin set out on a family road trip from Colorado to California in his newly purchased Tesla, a used 2021 Model 3. He expected to get something close to the electric sport sedan’s advertised driving range: 353 miles on a fully charged battery.

He soon realized he was sometimes getting less than half that much range, particularly in cold weather – such severe underperformance that he was convinced the car had a serious defect.

“We’re looking at the range, and you literally see the number decrease in front of your eyes,” he said of his dashboard range meter.

Ponsin contacted Tesla and booked a service appointment in California. He later received two text messages, telling him that “remote diagnostics” had determined his battery was fine, and then: “We would like to cancel your visit.”

What Ponsin didn’t know was that Tesla employees had been instructed to thwart any customers complaining about poor driving range from bringing their vehicles in for service. Last summer, the company quietly created a “Diversion Team” in Las Vegas to cancel as many range-related appointments as possible.

Plus: “In most cases, the complaining customers’ cars likely did not need repair, according to the people familiar with the matter. Rather, Tesla created the groundswell of complaints another way – by hyping the range of its futuristic electric vehicles, or EVs, raising consumer expectations beyond what the cars can deliver.”

FASTER? PLEASE! NASA picks Lockheed Martin to develop nuclear rocket.

The Demonstration Rocket for Agile Cislunar Operations (DRACO) program may launch as soon as 2027, officials said on a call.

Nuclear thermal propulsion (NTP) systems could cut journey times, increase fuel efficiency, and require less propellant, meaning future spacecraft could carry larger payloads than today’s best chemical rockets.

NTP works by pumping a liquid propellant, in DRACO’s case cryogenic hydrogen, through a reactor core, where uranium atoms split apart through fission.

The process super heats the propellant, converting it into a gas and funneling it through a nozzle to produce thrust.

“These more powerful and efficient nuclear thermal propulsion systems can provide faster transit times between destinations,” said Kirk Shireman, vice president of Lunar Exploration Campaigns at Lockheed Martin Space.

“Reducing transit time is vital for human missions to Mars to limit a crew’s exposure to radiation,” he added.

The ghost of Project Orion smiles.