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#12
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Though never having flown a brantly, I have seen a couple in the flesh, one
hangered at the school I used to train at, and one new one at Heli-Expo. The one thing that always concerned me was how low slung the rotor system is. When standing next to the helicopter, I had to duck to keep my head from hitting the blades...I can see when they are going round & round real fast as helicopters like to do, one could literally lose your head getting into our out of one of these things. Just an opinion. Dave |
#13
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(helopilot) wrote in message . com...
Dennis, you're stupid and obviously don't know what you're talking about. The helicopter was not overloaded on that flight. The guy flying it let the RRPM decay beyond recovery, as can be done with any helicopter. The Brantly is a good, reliable helicopter that can be operated very reasonably. It's also no more cramped than any other 2-place helicopter, and actually has more room than the R22 and certainly more than your rediculous scorpion. wrote in message ... "Stu & Kathy Fields" wrote: The power/wt and hp/wt is as good or better than the Safari. But...... the brantly is a piece of junk. I'll take my scorpion over a brantly any day. BTW, the hub system on a brantley is a retarded attempt at a fully articulated hub system. It has three heavy blades with the lead-lag hinge about half way out on the blade. Its true, I'm not joking, the blade hinges way out in the middle about 6 feet out. No two-passenger helicopter should have been overloaded with those two skinny guys in there. One was trapped underwater because the cockpit is so cramped. Fortunately, he was able to pop the windscreen out and escape through there. Save your money and buy something besides a brantly. Dennis H. Brantly B2 is as good as the pilot operating it Heavy blades are better than low inertia ones In autorotation flare after leveling off for landing the rate of rotor decay will support the helicopter for as such as 4 seconds No experimental homebuilt can compete with a certified one The simple flapping & lead-lag hinges & dampers work just fine on the outer main rotor blades |
#14
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#15
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"Murphy's law" wrote in message
m... (Davdirect) wrote in message ... Though never having flown a brantly, I have seen a couple in the flesh, one hangered at the school I used to train at, and one new one at Heli-Expo. The one thing that always concerned me was how low slung the rotor system is. When standing next to the helicopter, I had to duck to keep my head from hitting the blades...I can see when they are going round & round real fast as helicopters like to do, one could literally lose your head getting into our out of one of these things. Just an opinion. Dave This beats the common sense Why would one walk close to & under & into a spinning rotor? Would one jump into a dry lakebed for swimming? One must not be jumpy Don't lose patience & won't lose the head Agreed! Especially in the case of something like the Brantly. I've only seen a couple of them and like Dave, was struck (no pun intended!) by how low the rotor was. OTOH, as long as the pilot's sitting there with a firm hand on the cyclic (keeping the disk level) and has eye contact with approaching / departing ground personnel, it's not uncommon to load and unload passengers with the rotor spinning. I'm not saying it's the safest thing in the world to do but by my admittedly limited experience, it's pretty common. Actually, I've heard of more people (with a bad case of rectal/cranial inversion) sticking their heads in the tail rotor than the main rotor although I'm sure it's been done both ways. :-o Fly Safe, Steve R. |
#16
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wrote in message ...
David, you have a lot of gall to call me stupid. YOU ARE THE ONE WHO IS STUPID AND DOESN'T KNOW WHAT HE IS TALKING ABOUT. I was at that airport and saw the thing, WERE YOU THERE?. It was so overloaded that the pilot had to take off like an airplane. It took him several hundred feet to drag it on its skids fast enough to get enough translational lift to get off the ground! According to the pilot, this was reccommended proceedure when the gas tanks were full! For your information, the guy in that flight (which you presume to be an expert) did get off the ground and got half way out over the lake when he realized that something was wrong. He never got more than about 10 feet up. Then he turned back to the airport and got all the way back to the shore of the lake before going plop. Another 20 feet and he would have set down on dry land undamaged. The pilot said that he was giving it maximum throttle. If the rpm decayed, it was due to the craft and not the pilot. The on site FAA guy said that it was overloaded. David, I don't know what kind of idiot you are, but before you call someone else stupid, you'd better get your facts straight. Dennis H. The facts of the crash www.brantly.info NTSB Report-May 2003, N2141U (helopilot) wrote: Dennis, you're stupid and obviously don't know what you're talking about. The helicopter was not overloaded on that flight. The guy flying it let the RRPM decay beyond recovery, as can be done with any helicopter. The Brantly is a good, reliable helicopter that can be operated very reasonably. It's also no more cramped than any other 2-place helicopter, and actually has more room than the R22 and certainly more than your rediculous scorpion. wrote in message ... "Stu & Kathy Fields" wrote: The power/wt and hp/wt is as good or better than the Safari. But...... the brantly is a piece of junk. I'll take my scorpion over a brantly any day. BTW, the hub system on a brantley is a retarded attempt at a fully articulated hub system. It has three heavy blades with the lead-lag hinge about half way out on the blade. Its true, I'm not joking, the blade hinges way out in the middle about 6 feet out. No two-passenger helicopter should have been overloaded with those two skinny guys in there. One was trapped underwater because the cockpit is so cramped. Fortunately, he was able to pop the windscreen out and escape through there. Save your money and buy something besides a brantly. Dennis H. Dennis Hawkins n4mwd AT amsat DOT org (humans know what to do) "A RECESSION is when you know somebody who is out of work. A DEPRESSION is when YOU are out of work. A RECOVERY is when all the H-1B's are out of work." To find out what an H-1B is and how Congress is using them to put Americans out of work, visit the following web site and click on the "Exporting America" CNN news video: http://zazona.com/ShameH1B/MediaClips.htm Dennis Hawkins n4mwd AT amsat DOT org (humans know what to do) "A RECESSION is when you know somebody who is out of work. A DEPRESSION is when YOU are out of work. A RECOVERY is when all the H-1B's are out of work." To find out what an H-1B is and how Congress is using them to put Americans out of work, visit the following web site and click on the "Exporting America" CNN news video: http://zazona.com/ShameH1B/MediaClips.htm |
#17
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Here is the conclusion of the NTSB: The National Transportation Safety Board determines the probable cause(s) of this accident as follows: The pilot/owner's failure to maintain rotor rpm which resulted in a loss of control. Contributing factors were high gross weight and high density altitude. In other words, it was overloaded. Saying the pilot was at fault is not entirely true. His only fault was in buying a Brantly in the first place. His inability to keep RPM up was not his ignorance, but the failure of the helicopter to generate enough power. If you stop and think about it, all helicopters crash because they failed to maintain RPM. Its what caused the RPM to drop is what is important. Dennis H. (Murphy's law) wrote: The facts of the crash www.brantly.info NTSB Report-May 2003, N2141U Dennis Hawkins n4mwd AT amsat DOT org (humans know what to do) "A RECESSION is when you know somebody who is out of work. A DEPRESSION is when YOU are out of work. A RECOVERY is when all the H-1B's are out of work." To find out what an H-1B is and how Congress is using them to put Americans out of work, visit the following web site and click on the "Exporting America" CNN news video: http://zazona.com/ShameH1B/MediaClips.htm |
#18
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sorry denis ive flown a brantly its got the same power as a hiller / enstrom a
model or about twice the power of a rotorway no problems at all to keep the rotor in the green if a rororway can fly a brantly certainly can steve |
#19
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"Steve R." wrote in message ... SNIP Agreed! Especially in the case of something like the Brantly. I've only seen a couple of them and like Dave, was struck (no pun intended!) by how low the rotor was. OTOH, as long as the pilot's sitting there with a firm hand on the cyclic (keeping the disk level) and has eye contact with approaching / departing ground personnel, it's not uncommon to load and unload passengers with the rotor spinning. I'm not saying it's the safest thing in the world to do but by my admittedly limited experience, it's pretty common. I worked as an engineer with Brantlys for ten years and went in and out of the rotor disk many times a week. Never had a problem. The trick - as with all helicopters - is to look for the tip path. And as for the topic - Our guys used it for pipeline patrol and it was just as good as any turbine. That rotor system is so smooth. - First time I flew in another type I thought it was coming apart when it went into transition! Slatts |
#20
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I can't say that I have ever flown a Brantly, but here are some specs from both Rotorway and Brantly's web site: Helicopter Exec 162F Brantly B2B ===================== ================= ================== Max level Speed 115 mph 100 mph Cruise Speed 95 mph 90 mph Rate of Climb 1000 fpm 1400 fpm Service Ceiling 10000 feet 6000 feet Hover IGE 7000 feet 3525 feet Hover OGE 5000 feet n/a Useful Load Capacity* 423 lbs 414 lbs Fuel Burn ** 8.5 gph 13.8 gph Max Range 180 miles 200 miles Fuel Capacity 17 gal 31 gal (30.6 usable) * With Full Tank of AvGas ** Calculated ((Cruise_Speed X Fuel_Capacity) / Range) So at least according to the specs, the Exec outperforms the B2B in everything execpt Rate of Climb and Max Range. Given the fuel burn is nearly double in the B2B, it looks like it has to struggle to stay in the air despite having a more powerful engine than the Exec. Comparing to the R22: The R22 outperforms both with the exception of max carrying load. Dennis H. ojunkm (Stevenatherton) wrote: sorry denis ive flown a brantly its got the same power as a hiller / enstrom a model or about twice the power of a rotorway no problems at all to keep the rotor in the green if a rororway can fly a brantly certainly can steve Dennis Hawkins n4mwd AT amsat DOT org (humans know what to do) "A RECESSION is when you know somebody who is out of work. A DEPRESSION is when YOU are out of work. A RECOVERY is when all the H-1B's are out of work." To find out what an H-1B is and how Congress is using them to put Americans out of work, visit the following web site and click on the "Exporting America" CNN news video: http://zazona.com/ShameH1B/MediaClips.htm |
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