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"Brent" b_philion hotmail.com wrote:
Sounds like an airboat hovercraft or some other type of propeller driven ground effect vehicle Actually it sounds closer to something like a skateboard with as prop motor and a user on it. you are missing a huge amount of variables and for props, pitch, density altitude, motors, and at speeds that slow your in the wrong group "that slow your" = "that show you are" ? because very few things, If Any, in any of these groups fly at that speed. And aircraft move slow taxiing because they are not meant to be ground vehicles they usually have very narrow stances and high centers of gravity compared to a ground vehicle as soon as they have any kind of airspeed they want to fly. Look up an RC or Aeronautical engineering group on usenet or elsewhere. you need to find design people not pilots Or someone who can at least write... -- "Flaps_50!" moreflaps gmail.com wrote in message news:fcb480ce-e285-47c4-87dc-8a9257583974 o7g2000prn.googlegroups.com... On Feb 4, 11:55 am, John Doe j... usenetlove.invalid wrote: Is there such a calculation/formula? How can you tell what propeller to use, how fast it should rotate, and how much weight it can push along the ground? Specifically... I would like to tell what sort and size of propeller rotating at what speed, in calm air to push 100 or 200 pounds on smooth and level pavement with zero rolling resistance to about 20 mph. 20 mph is too fast for taxying. What are you asking about -zero rolling resistance???? Cheers Path: news.astraweb.com!border6.newsrouter.astraweb.com! news.glorb.com!news2.glorb.com!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: "Brent" b_philion hotmail.com Newsgroups: rec.aviation.military,rec.aviation.piloting,rec.av iation.homebuilt Subject: Taxi calculator? (propeller type and speed, aircraft weight, taxi speed) Date: Sat, 5 Feb 2011 08:56:39 -0500 Organization: A noiseless patient Spider Lines: 37 Message-ID: iijkv3$9c7$1 news.eternal-september.org References: 4d4b324f$0$26911$c3e8da3$33881b6a news.astraweb.com fcb480ce-e285-47c4-87dc-8a9257583974 o7g2000prn.googlegroups.com Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit Injection-Date: Sat, 5 Feb 2011 13:56:51 +0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="xYLfF8Lb0bp2wp8oENpIHA"; logging-data="9607"; mail-complaints-to="abuse eternal-september.org"; posting-account="U2FsdGVkX1+B/Bq5SBEMU+t3/WD5HnKQIqjXJoitkek=" X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18483 In-Reply-To: fcb480ce-e285-47c4-87dc-8a9257583974 o7g2000prn.googlegroups.com X-Newsreader: Microsoft Windows Mail 6.0.6001.18416 Cancel-Lock: sha1:EC3Z+JO44uhq890OIgPBe02FbqM= X-Priority: 3 X-MSMail-Priority: Normal |
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