Tony K
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Posted by Peter Jenkins on 23/10/2016 16:55:33: Even the newsreaders on the Beeb seem to be following the US tradition of no infinitive should ever be left unsplit! To me, that sentence doesn't look correct but I have been living in a mainland European country for more than twenty years and have to use the vernacular every day, so my English grammar may be rusty. I would have written, ...following the US tradition of never leaving an infinitive unsplit or, perhaps, ...of not leaving an infinitive unsplit. Also, to quote Otto Jesperson, ""To" ...is no more an essential part of an infinitive than the definite article is an essential part of a nominative and no one would think of calling "the good man" a split nominative".
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Posted by Peter Jenkins on 23/10/2016 15:48:19: Ending a sentence with a preposition. That is the sort of nonsense up with which I will not put.
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What star sign are you? Is there a trend with flyers?
Tony K replied to Beth Ashby Moderator's topic in Model Flying Polls
Quotes, "I am Taurus and I think this is a load of bull... " "Dont believe in astrology!! Typical Gemini" "I'm not voting either. Maybe that's meant to be typical behaviour for us Leos" etc. How many of those who claim it's a "load of bull", or use other derogatory expressions, know which constellation they were born under. If it's so unimportant, why make the point? Quote, "How about something relevant to aeromodelling?" Well, one of the most recent threads, which went on for twenty pages, was some utter nonsense about a 747 on a treadmill. -
The question is, how has this nonsense stretched to fifteen pages?
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I live in Germany, but I must admit I have never heard of Krumscheid. If you need any help, send me a PM with the details.
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Posted by Donald Fry on 02/07/2016 18:18:49: My grandfather was a boy soldier in the Zulu war, in the 41st Foot, South Wales Borderers. Possibly off topic but for historical accuracy, the South Wales Borderers (my father's regiment) were the 24th Foot. At the time of the Zulu wars, the 24th Regiment of Foot were the 2nd. Warwickshires and were renamed SWB in 1881.
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Did any of you F1 fans notice the Sochi Grand Prix circuit in the, or on the, background?
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Posted by PatMc on 09/02/2016 22:01:43: If an prop driven aircraft could reach pitch*rpm speed the velocity of the mass being expelled would be equal to the velocity of the aircraft. I.e. thrust = zero. So, if thrust = zero, where has the drag gone. When your aircraft is flying at maximum speed it has accelerated to the point where the available thrust is no longer able to overcome the drag. That does not mean the thrust is zero, if it was then the drag must also be zero. At maximum speed you must have maximum thrust.
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Posted by Donald Fry on 09/02/2016 19:26:04: As Mohamed said. Actually I'm more inclined towards Buddha, but that is not for this forum. Many years ago I was a racing car mechanic. The form was that after you double.checked everything, then you checked it again just to make sure.
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A man who never made a mistake never did anything.
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Posted by Andy48 on 09/02/2016 12:09:53: At the end of the day Newtons second law of motion will always apply, F=M*A, F being the net force, be it thrust minus rolling resistance, or thrust minus drag. Andy, the formula, F=ma, only applies if the mass is rigid and constant, like a snooker ball or a planet. Force is a rate of change of momentum. Momentum is mass times velocity - mv. So F= d((mv) If the mass is constant, the formula becomes F= m(dv). dv is acceleration, so F=ma. But when the mass is is a fluid (air) and the rate at which it flows through the propulsion system (propellor), which is almost constant, then the formula is F= (dm)v So the force or thrust equals the rate of change of mass times velocity. The rate of change of mass is the mass flow - kg/s Therefore thrust equals mass flow times velocity.
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Posted by ken anderson. on 11/01/2016 17:41:49: let the film speak for itself ken anderson...ne...1 motoring dept. That reminds me of the time when we, as a family, got our first television. It must have been about '61 or '62. There were often 'public information' films shown. One I particularly remember, but I don't know why, was instruction on how to wash your dishes. Wash your plates and dishes and stack then fo dry. If you must use a drying cloth, make sure it's clean. There was another one about drivers not dipping their headlights but I can't remember the details. I'm going on to youtube now to see if they are there.
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Posted by Simon Chaddock on 20/12/2015 16:01:56: If we assume you testing method itself does not impeded the air flow only getting 660 g thrust is a bit of a concern. Indeed. Even with a less than perfect duct one could expect to draw 90W per Newton of thrust. So for 974W you should have about 11N or about 1,1 Kg thrust.
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Posted by Steve Hargreaves - Moderator on 16/12/2015 17:10:33: As to passing the MOT then the cars will do this...we know because there are thousands of 3 year old plus VWs running around. One must assume they all have valid MOT certificates.... Please correct me if I have misunderstood, but this ongoing 'scandal' concerns nitrogen oxide emissions which are not part of M.O.T. testing. Isn't it only hydrocarbon and carbon monoxide emissions which are checked in the annual test for diesel vehicles?
