US Army : Infantry Squad Vehicle

[Howard LewisParticipant @howardlewis46836]

Using commercially available components has advantages, in both cost and availability.

But in UK, suppliers have to jump through many hoops for their product to be accepted by FRVDE, AID and ARB.

An approved supplier can only source raw materials from another approved supplier, and has to provide copious proof of having so done..

Very little is left to chance, whether a high tech component or even a length of rope!

The Jaguar powered Scorpions, were less economical than the Perkins T6.354.3 powered ones . But both suffered from the high duty cycles required of them. I was once told that a Jaguar engine delivered the claimed power for a short time, on a test bed, but then stabilised at a lower output.

The Rolls – Royce / Perkins CV12 engines fared better in desert conditions than the less economical gas turbine powered Abrams tanks. And the power package had been developed so that it could be changed quickly, when problems did arise. (As might be expected on a high duty cycle in desert conditions. )

Sand is good at finding a way through the best of seals and filters!

HMS Hood was, perhaps, unfortunate in the lethal shot hit a magazine, so that the resulting damage was far far greater than the fatal shot would have been had it landed elsewhere.

The V1 was faster than propeller driven fighters, in level flight. But a Spitfire could catch it by diving, and tipping it over with a wing tip, so that the gyro guided into the ground, rather than the intended target..

Once Knickebien was penetrated, it was used to divert bombers, to the extent that one Ju 88 landed in East Anglia, convinced that it had just made it home, before running out of fuel!

No machine can be made absolutely attack proof. It may be, for a short time, before an enemy finds, or develops, a way to render it vulnerable.to damage or destruction..

Howard

[steveteeParticipant @stevetee]

I've come late to this discussion late, but some of the comments made me smile, the comments about the TV….

The Austin Champ is a great example of over planning, because of 'commonality' it used the same liners pistons, filters etc as the 8 cylinder heavy truck version. Based on a thirties Bentley engine, cost LOADs more than the Landrover, was less reliable and only the first batch were ever built.

Success stories, The Bedford QLand RL spring to mind.

I'm sure others will know more than me on the subject.

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