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#11
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Mostly just amusing and idle speculation... But I've seen some cold rainy days when it would sure be nice to preflight in the hangar, climb in, and just drive out. G ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- Two things: 1. Some hangars have slightly slanted floors such that when the chocks are removed, the airplane wants to roll out. They have to be winched in of course but lots of hangars have winches to reel the airplane in without a slanted floor. 2. If it's cold and rainy, you're flying? ;-) Corky Scott |
#13
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"James M. Knox" wrote in message I haven't done the
brake calculations, but I *think* (back of the hand calculations) that the amount of power generated stopping the plane on the runway and taxiing in is small enough that even a "fully charged" battery can easily absorb it. The electric motor on my hybrid car is 6 cm thick and the diameter is larger than some homebuilts' tires. It's rated for 10 hp and it's hooked into a 144 volt battery which weighs more than I do. The motor goes into regenerative mode for braking. It recharges the battery in quick order, but it doesn't stop the 2800 pound car very well. Based on this, I'm inclined to think that you will still need traditional brakes. D. |
#14
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What one should use is to replace the front weel hub wtih a hub-motor
http://www.goldenmotor.com/ . I am sure that this would not add that much weight and if the hub-motor is selected corectly, the original tyre used, one could not distinguish it form original. Now, I wander if this could be installed on a certified aicraft with some field approval as a minor modification... "James M. Knox" wrote in message ... (Malcolm Teas) wrote in om: "James M. Knox" wrote in message I always figured if I was building a homebuilt I would investigate some relatively small motor/brake assemblies that are used on smaller electric automobiles. My first thought when reading this was, "sounds cool!". And I started to think it through. All true. Of course, I was thinking primarily in terms of taxiing only a short distance - into or out of a hangar, for example. I haven't done the brake calculations, but I *think* (back of the hand calculations) that the amount of power generated stopping the plane on the runway and taxiing in is small enough that even a "fully charged" battery can easily absorb it. Mostly just amusing and idle speculation... But I've seen some cold rainy days when it would sure be nice to preflight in the hangar, climb in, and just drive out. G ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- |
#15
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arcwi wrote:
What one should use is to replace the front weel hub wtih a hub-motor http://www.goldenmotor.com/ . I am sure that this would not add that much weight and if the hub-motor is selected corectly, the original tyre used, one could not distinguish it form original. Now, I wander if this could be installed on a certified aicraft with some field approval as a minor modification... The largest one is 500W, a little less than 1Hp. (Is that right?) Just barely enough power to push a light aircraft out of the hanger? Now how much does it weigh (along with the 500W voltage converter to go from 12 to 36V)? -- http://www.ernest.isa-geek.org/ "Ignorance is mankinds normal state, alleviated by information and experience." Veeduber |
#16
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I once, on a flight from Bogota to MIA, sat next to an ex-FBI agent, ex-Customs pilot, then MD for PHS. He talked about making short field landings in a King Air by going into reverse pitch while still 50 ft above the dirt.... ARGH! -- A host is a host from coast to & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 |
#17
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You can put a small winch at the back of the hangar to pull you in, but yes, you must get out to attach it. -- A host is a host from coast to & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 |
#18
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He talked about making short field landings in a King Air by going
into reverse pitch while still 50 ft above the dirt.... ARGH! Known as Beta Mode in a Porter, and was used to drop from the sky at a great rate of knots when you wanted to get down in a hurry. It has been used for parachuting and allows the aircraft to get down faster than the jumpers..... Also good for taxi operations. I am considering a Storch, www.storch.com.au and have just had a great chat with the designer about this and a few other things. Looks like I'm about to take a trip down to see him...... Peter |
#19
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David Lesher wrote: He talked about making short field landings in a King Air by going into reverse pitch while still 50 ft above the dirt.... ARGH! The technique was commonly used by CIA pilots for short field insertions in SEA. George Patterson A diplomat is a person who can tell you to go to hell in such a way that you look forward to the trip. |
#20
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That's funny!
-- Dan D. .. "Boogerz" wrote in message ... Shortly after I first got my ticket, I took my wife and kids to see family in a 172. At the other airport, we were told to back up to a fence. So, I shut down and pushed the plane into place. My wife was furious about something as we walked thru the terminal to meet family...finally she blurts out "I've never been so embarassed in my life! I'm not going anywhere with you again until you learn to use the reverse." "David Lesher" wrote in message ... You can put a small winch at the back of the hangar to pull you in, but yes, you must get out to attach it. -- A host is a host from coast to & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 |
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