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View Diary: Air-Minded: Get Your Motor Runnin' (18 comments)

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  •  My Yak 52 (9+ / 0-)

    in fact all 52's and Nanchang CJ-6s are air start. Compressed air is distributed to the cylinders causing compression and then a shower of sparks is introduced for ignition.

    The 47% also "pay all the taxes that are legally required and not a dollar more" but when Romney does it he thinks it's a virtue, while when they do it, he thinks they are deadbeats.

    by jsfox on Tue Dec 04, 2012 at 01:49:24 PM PST

    •  A little like the cart start system, but (3+ / 0-)
      Recommended by:
      Otteray Scribe, mookins, Simplify

      less violent and probably a hell of a lot easier on the engine. Plus the compressed air cylinders recharge as the engine is running, right?  Those Yaks are so cool!

      I did see mention of an explosive cartridge start system that directed the expanding gases into an engine's compression chambers, forcing the pistons down in rotation to turn the crankshaft, but I'm not sure it was ever used on aircraft engines. Sounds like something you'd use an a large stationary diesel, maybe.

      •  Yes, the compressed air (3+ / 0-)
        Recommended by:
        Otteray Scribe, mookins, Simplify

        re-charges off the engine which drives a pump. The air also operates the flaps and brakes. The reason for the air system - far easier to service than hydraulics and it isn't effected by cold weather.

        Actually in The Flight of the Phoenix both old a new versions are explosive cartridge starts. I also believe a few WW II bombers used cartridge starts.

        The 47% also "pay all the taxes that are legally required and not a dollar more" but when Romney does it he thinks it's a virtue, while when they do it, he thinks they are deadbeats.

        by jsfox on Tue Dec 04, 2012 at 02:19:53 PM PST

        [ Parent ]

        •  Yeah, after I wrote the diary (6+ / 0-)

          I read that Harrison Ford cart-started a Beaver in that movie where he's trapped on a remote island with a sexy woman (I'd probably have tossed the carts into the lake). But I hated the second Flight of the Phoenix so much I refused to remember anything about it.

          The Russians had a lot of different but just as effective ideas about designing planes as anyone. I always thought the knuckle-knocker stall warning gizmo was smart, as well as the little red rods that popped up on top of older MiG wings to let the pilot know the gear was down and positively locked.

      •  Actually, both later models of the Spitfire.. (3+ / 0-)
        Recommended by:
        Otteray Scribe, PeterHug, Simplify

        and the Typhoon and Tempest used the Coffman cartridge start system.

        The 'breech was loaded with the large bore cartridges, and after a failed start, you operated a Bowden cable, which indented the breech around, one position!

        'Per Ardua Ad Astra'

        by shortfinals on Tue Dec 04, 2012 at 05:20:24 PM PST

        [ Parent ]

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