Environmentally Friendly Race Cars, Military Vehicles

jackelfish writes "The non-profit organization IdéeVerte Compétition has created a 'space age' race car that runs on Liquefied Petroleum Gas (propane or butane) and is lubricated with sunflower oil. Sponsored by the European Space Agency, the car recently broke the 'LPG powered vehicle' speed record of 315 km/h. The car also utilizes space technologies such as a titanium fuel tank, heat shielding developed for the Ariane launch vehicles and an EGNOS satellite navigation system to determine the speed, acceleration and position of the car in real-time." And reader gkbarr writes "Is the DoD feeling the crunch of sky-high gasoline prices or are they being overrun by a bunch of Greens? Who cares, the latest Humvee looks to be a more capable and greener machine than its predecessors."

Comments

that RST is very toyota!

[snellgrove2]

Combining a standard internal-combustion-engine with an electric generator, and motors (which can also be run in reverse, when coasting / braking, thus returning the kinetic energy back into electrical power) is exactly the same idea, as Toyota have come up with in their family car, the "Prius" which is called the "Hybrid Synergy Drive"

I have driven a prius about 4 times now, and have managed to average, at "99.9 miles per gallon" as it says on the display. albeit, ive only managed that to last about 10 minutes, when doing around 40mph, on relatively flat land, but still its pretty damn good fuel economy

DoD Research

[Registered Coward v2]

Actually, there's a lot of hybrid vehicle development going on at DoD - even for the current batch of HMMV's,

The militray is always interetsed in lower fuel consumption (as long as it doesn't degrade mission capabilities), because that means you have to haul less gas to the battlefield, lessening the logistical footprint. Fuel costs are a very small part of the equation - more of an added benefit than a driver, at least for combat and combat support vehicles.

In addition, hybrids can be more stealthy - less thermal signature, lower noise, etc. - which maes them better for many types of missions.

Size counts as wll - anything that helps load it (or more of them) into a C-130 or C-17 is a plus, especially since the US military is moving to lighter fast reaction forces that can be airlifted quickly to combat zones, rather than running massive convoys of ships that take days to get there.

This is better: no normal drive train

[r00t]

This uses 4 electric motors in the wheels.
That means it doesn't need a sloppy differential
to let the wheels on the outside of a turn go
faster than the wheels on the inside of a turn.

The Prius, while nice, lacks this ability.
A Prius has a direct linkage from the engine to
the wheels; electric power is only an assist.

Glaring Errors

[Dun Malg]

TFA is ill researched crap. First, this Shadow hybid vehicle is not suitable as a 1:1 replacement for the HMMWV except in a very small number of roles; it's a light attack vehicle with no cargo capacity. The hummer is 1 1/4 ton truck. Then there's this choice bit of irrelevancy:

A typical Humvee guzzles over 1,000 pounds of fuel per mission, and the civilian equivalent (the Hummer H2) was ranked among the "12 Most Environmentally Unfriendly Vehicles of 2004."

The Hummer H2 is not the civilian equivalent of the HMMWV, the H1 is. The H2 is a totally unrelated vehicle based on the Chevy Tahoe SUV. The military is obviously interested in reducing fuel consumption, as driving tankers of diesel around is a logistical nightmare, but really that's about the end of it. And at the end there's this glaring error:

the Shadow RST-V is slated to replace the M151 A2 fast attack vehicle currently used by the Marine Corps for Special Forces (SF)support. After test and evaluation and rigorous trials, the RST-Vs superior mobility, deployability and fuel economy are welcome advantages over the Humvee's loud, gas guzzling ways.

OK, so the Shadow isn't replacing the "gas guzzling" Hummer, it's replacing the M151A2! The M151 is the good old fashioned jeep, with a tiny 4 cylinder gasoline engine. Hardly a gas guzzler. The author clearly wanted to put a "green" spin on the story, but didn't bother to research a number of his assumptions, the stupidest of which was assuming the M151A2 was the Hummer!