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Tesla caught 'lying' again. Model 3 has 293.5 kW based on that dyno test. Makes a change from ICE vehicles which struggle to meet claimed power. Tesla has likely decided that it will put that motor in its M3, MS, MX, Semi and Roadster and use software to adjust power output. It might have...

This view of the equipment under the frunk is brilliant in that it shows there is plenty of scope to package this equipment into one large subassembly and drop it into the car in one go with a few hose and cable connections. Obvidusly, the mechanical stuff - suspension, steering, brake discs and...

During the investor call Elon said the M3 has Gigafactory 2170 cells while MS, MX have japanese 18650 cells.

I think it better to have a common reservoir as per the attached Glycol loop diagram. Every circuit will have a pair of electronically controlled valves and a pump to match fluid flow to circumstances. Also, if a leak is detected in a loop, the thermal management system needs to close it off...

I reckon the M3 will come with a 'space- like' steering wheel which will have some information display capability.

Increasing the battery voltage is not an issue. It just requires half size current collector plates and flipping the direction of half the cells in a module. When charging, each module is presently 25 volts - each module is 6 in series. Halve the size of the plates will cell flipping gives a 50V...

Front and rear steering is great for a tight turning circle and for vehicle parking. Lucid Air and some Ford trucks have it, or will have it. It is great for putting an autonomous vehicle into a tight space - great for many European cities. When will we see it on a Tesla???

To get to 20 Wh per cell requires a 75% increase in active materials. The volume increase 18650 to 21-70 is 46.6% increase. The weight increase is likely to be 56% to 75 grams The cell casing, if the thickness does not change, will decrease from about 3.8% to 3.3% at the larger size. If the...

A usable 20 Wh/cell would not surprise me.

The battery would need to be split into 8 (200 kg) or so parts so it can be inserted through a hatch between the frames of the aircraft. A special hoist would be needed to lift the sections into aircraft and they and the coolant tubing would need to be secured. The US national Fire Protection...

On further reflection, having seen the Tesla battery module deconstructed, its suggested there be two 400 kWh batteries, each comprised of 40 modules with each module packed as shown in the image. The 21-70 cells are envisaged to be rated at 3.6 V and 5.85 Ah for 21.06 Wh of which 20 Wh (95%)...

A Tesla semi might come with 500 kWh of battery and a number of DC charge points. It might go 500 km loaded. Being a truck, there is nothing to stop a driver carrying, say, a 100 kW generator on the trailer and wiring it in to the battery for on the move charging when needed. Vehicles designed...

Good to know

GE 93 turboprop has the air/gas flow from the the rear to the front of the engine. Air is sucked in rather than rammed in. Rather than the air compressor powered by a shaft from the exhaust gas turbines, it could be powered by an electric motor. Air and fuel could then be supplied solely on the...

The aviation industry will surely love that approach to battery module protection. There are a lot of short range aviation applications for under 100 km with vertical. or very short runway take-off and landing. Pure electric aircraft with current technology surely have some significant...

Hopefully, Telsa has this problem beat with the size of its cells - 21700. A runaway in one cell would be cause for module to be shut down, but it should not cause neighbouring cells to "burn" - only get hot.

This attachment of a Boeing patent for VTOL 100 seat passenger aircraft would indicate that they are thinking of electric fans as a mechanical drive version would be too clunky/heavy, and the engine and motor housings are sized for turboshaft power and electric motor drive.

This link to a Boeing patent for VTOL 100 seat passenger aircraft would indicate that they are thinking of electric fans as a mechanical drive version would be too clunky/heavy, and the engine and motor housings are sized for turboshaft power and electric motor drive. Patent Images

Having proposed a counter-rotating electric powered propeller design, I have perhaps over-reached on the technology front. http://www.aerospaceamerica.org/Documents/March%202010/Open%20rotor%20research%20revs%20up_MAR2010.pdf

The bus and large truck industry will pioneer higher voltages. It will be interesting to see what are the standard vehicle voltages in a years time.

NASA, Boeing, Airbus and small plane manufacturers are all working on electric aircraft. Range is the issue. The portion of the battery/payload capacity taken up by battery grows in proportion to battery range. As aircraft become lighter, more weight can be allocated to battery. It is the way of...

Aeroplanes are designed to evacuated in 90 seconds. Cutting high voltages in a minor crash, where the plane is largely intact, is an important issue. In a major crash, with cells spilled all over the place, the voltages of the cells are down to 3 to 4 volts - fire is caused by spilled fuel and...

This is where I think the Tesla approach to cells is very good. The 21700 cells would get scattered in a bad crash, but don't have too much energy to be a major concern. The fuel and the aircraft body are the main fuel in a fire. The body hitting the ground is the main spark that sets off a fire.

Many issues to be taken into account I see. In a crash, the sparks from friction of aircraft parts hitting the ground, and each other, ignite spilt fuel. The batteries will contribute to an already burning fire. New FAA certification rules for high-voltage circuits will be required. The high...

Thankyou. That says it so much better. Electric fans spool-up to speed faster than propellers. An electric aircraft will likely accelerate faster and reach a higher take-off speed for the same runway length. They will be much quieter and will be able to operate at night at airports with...

It is obviously a tough ask to make a hybrid aircraft stack up economically. But countries looking a technological lead, like China, might be prepared to invest in it. It has a government subsidised 100 seat aircraft development program. Weight is an issue at take-off and landing. At cruise...

On review, it would be better to use a pair of PWC 980A APUs from the A380 as power generators. These can each generate 1350 kW, and would be paired with a single electric motor. Two fully independent jet-fuel powered electrical electrical circuits, that can feed power to the batteries and the...

If demand goes soft on S/X, it has van and truck bodies in the works. M3 is gong to have a lot of autonomous driving features to keep Tesla at the bleeding edge of the industry. What the world needs right now is M3 based EVs in sedan, SUV, van and truck truck bodies without the automation...

While the aviation industry is starting with 1 to 4 seat electric aircraft to mature technology, an indicative specification for a plug-in hybrid version of an industry standard 100 seat regional propeller powered aircraft could look as follows below. Telsa technology would be used in the...

Some number to put vehicle acceleration in perspective: 1 m/s.s typical max acceleration for a train = 0-60 mph time of 26.9 seconds 9.8066 m/s.s standard gravity = 0-60 mph time of 2.74 seconds 13.41 m/s.s 0-60 mph time of 2 seconds 8.94 m/s.s 0-60 mph time of...

Q&A article offers great insight . As does this interview of Sandy Munro of Munro and Associates - Check out this video https://www.youtube.com/watch?v=uDr4L6BzpP8 With the i3, BMW showed how to take mass out of a traction motor and minimise material wastage. The performance experienced...

Tesla must have a significant technology lead over GM. We should expect more Tesla range per tonne of car.

Batteries to support solar power is a great application in Africa. Manufacture on the continent avoids tariffs in many countries.

The Acciona Dakar was disqualified on the 10th stage having completed 75% of the 9237 km route due to reasons outlined below. There is nothing to stop Acciona buying 2 Model S P85 cars second hand and cannibalising them for parts. Tesla should work with Acciona to supply them with their best new...

I reckon in 500 years we will still only have Antarctica style research facilities on Mars. Robots are much better suited to exploration in hostile environments. NASA has done a lot of good work in developing spaceflight technology, but it is too expensive and too slow. It really should contract...

Definitely something wrong with the units. Considering the average stage is 700 km, it must be 150 kWh. A Model X P90D is rated with a 402 km range, 150 kWh would give it a 650 km range on bitumen. It might be only 500 km on a typical Dakar off-road course. Stages range from 400 km to 930 km -...

Based on reported costs, a 90kWh battery probably represents $15,000 of the purchase price. A 50kWh battery in a Model 3 may represent just $7,000 of the purchase price when it is launched. Separate rental of the battery would be like renting the ICE in an old tech vehicle.

Having studied the report of the NASA commission that did the "trade" studies for the SLS and info on the NASA and SpaceX websites, there are three rules of thumb that can be applied for a methane-oxygen powered rocket that represent a state of the art rocket. I derived the figures from the...

Tesla gets paid for deliveries - its an important number. As forecast deliveries is the number provided for investor guidance, actual deliveries compared to guidance is the metric the media will comment on. The company has a deep order book and customers around the world. Some vehicles likely...

Tesla batteries power Acciona Dakar rally vehicle. Will we see a Tesla Dakar car?? No other race would better demonstrate Tesla technology. http://www.accionadakar.es/en/the-vehicle/vehicle-2015/ www.facebook.com/accionadakar www.twitter.com/accionadakar www.instagram.com/accionadakar...

Big versions of the RP-1-Lox Merlin engines have been cancelled. SpaceX has moved on to developing engines (named Raptor) using the more energetic liquid Methane-Oxygen fuel. Reusable first stages allow more focus on life cycle cost - which leads to more capital intensive higher-performing...

Tesla and SpaceX are companies with big ambitions. See attached for possible specification for a Falcon XX to sections of a Mars bound vehicle to space.

Lots of similarity between Telsa and SpaceX technology development - as we should expect with Elon in charge of both. Tesla, the newer company, has a product development portfolio which is briefly described as: -- The Roadster - a commercial proof of concept for its electric drivetrain with a...

The motor, etc, will not fill a crumple-zone frunk. Even if the spare tyre goes in there, there will still be a bit of space for other stuff.

The autopilot does not rely on the view from inside the car - all windows could go. I believe John Deere has developed tractors that have no drivers cabin or controls - the tractor follows programmed routes and has a remote control. We should expect a lot of delivery vehicles on our roads that...

85kW.h battery has 16 modules in series with each module having 6 cells in series by 74 in parallel (7104 cells). 6% higher amp.hour cells are used to create the 90kW.h. The new cells must deliver 3.3a.h compared to 3.1a.h for the older cells. However, both cell types have a higher nominal...

Never has a picture so well told a story - - - Updated - - - Very impressive Works best with 4 wheel drive - smaller motors and max regen. - - - Updated - - - Yeah!! Didn't see the mistake when I wrote it.

Some of the major Tier 1 suppliers to the auto industry have development versions of drive units like this. It requires a bigger shock-absorber for the extra weight - extra weight is closely related to power of the electric motor. Tonnes of power being a feature of Tesla EVs, its a more...

The Roadster had a radically large battery. Model S was the first EV optimised car with underfloor battery, compact motor layout, the big driver interface screen and autopilot. Model x delivered the Falcon wing doors, large windscreen, novel second row seats and chemical warfare quality air...