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David Wright
Добавлен 20 дек 2007
a work in progress, adding pic & vids that may be of interest to all, please share & leave feedback, fly safe!
Trevor MFT nine news
Nine news visited Melbourne Flight Training & caught up with Trevor Cole
Просмотров: 704
Видео
Essendon Airport
Просмотров 1 тыс.10 лет назад
You've all heard of this airport. What horror awaits? Turn, run or fly away now! While you still can...
The Propeller Explained
Просмотров 896 тыс.10 лет назад
The Propeller Explained, a documentary made in the 1990s
Matt caught by security - Echuca 17/1/09
Просмотров 1,5 тыс.15 лет назад
Matt caught by security - Echuca 17/1/09
That works well on a marked Runway, we just have a grass strip with no markings, the C172 is very easy to land though, especially with two people in the back, if you are solo keep some up trim in, then you dont run out of elevator at the final stage of landing.
best video which explains various aspect of a propeller
dayummmmmmmm Where are more videos like this one? I'll watch all of them!
Are you the David Wright of Wright Wings out of PDK??
Thirty three years on, is there a modern version of this film?
this video is on point, i was wondering how front propeller make the plane fly (lift or drag)
Think the propellers proper name is a " air screw "
Variable pitch propellers seems like the stuff of witchcraft. 😮
Best video on prop theory
Nice video 👌🏻
The opening song is my new favorite song. ❤
SUPER . POZDRAWIAM .
Thankyou for this video. I really enjoyed it.
i can't believe one of the Wright brothers is still alive. we're fortunate to have this explanation straight from the source.
Wow! This was so informative. I wish modern documentaries were like this. so much information thoroughly explained in a short video.
wow, just better then anything i saw on youtube
vim pela emanuelle do qi
Sorry guys but the “father” of aviation, who flew first, a heavier than air aircraft, for everyone to see and record was Santos Dumont. Period.
Very helpful, I love you
جميل جدآ اود ان اصنع طائره
I enjoyed this and understand the evolution of the propeller a bit more. It still seems there are even more advantages of the propeller system to come. But as a science fiction follower the thought of anti gravity systems is also a long ways off.
Learnt so much, thank u
6:11 I get that the tip of the propeller moves faster than the base but I still could not wrap my head around why the angle of attack would increase at the tip when it is visibly uniform from base to tip. He said "the angle of attack would increase" how so?
From the standpoint of the propeller section (tip or hub), there are two vector "components" of airflow. The larger is airflow resulting from the prop rotating through the air. It will be in a direction flowing toward the flat, high pressure side of the prop airfoil. The lesser airflow is due to the forward motion of the prop (and plane) forward through the air and induced flow. This will be at 90 degrees to the airflow due to just prop rotation. Its direction will be toward the curved, low pressure side of the prop airfoil. The actual airflow is the vector sum of these two components, and its ultimate direction (angle of attack as the video calls it) will depend on the relative velocities of the two "flows". The forward lesser component will be the same for prop sections at the tip, and toward the hub. Let's say for clarity both prop sections are angled at 45 degrees to rotation. And lets further say that at a prop section half way toward the hub is experiencing a forward airflow velocity that EQUALS the rotational velocity there. A little quad rule napkin sketching will show that the resulting total airflow will strike the 45 degree prop section squarely on the nose, for an effectively ZERO angle of attack. Now lets move out to the tip. The forward airflow is the same, but since the tip is twice as far from the hub, its rotational velocity, and the airflow that causes is now TWICE what the forward flow is. Going back to the quad ruled napkin will show that the resulting combined vector will now strike the 45 degree prop, not on the nose, but on the high pressure side of the prop section at about 20 degrees. This equates to a 20 degree angle of attack at the tip, while half way toward the hub the constant 45 degree pitch prop is experiencing a zero degree angle of attack. It is important to remember that angle of attack refers to an airfoils orientation regarding the media it is flowing through, not necessarily the same as its orientation to vertical, horizontal, or even the craft it is attached to.
@@NullHand thanks, now that you explained this clearly. I am now completely lost hahaha. I'm going to read this many times, I think I got a little more understanding now.
The angle of attack of a propeller blade is generally measured at a point that’s 3/4’s of the way from the hub to the tip. The blade is usually widest at that point and it’s where most of the thrust is produced. To calculate the angle of attack, divide the pitch by the diameter and then divide by 2.36. The result will be the tangent of the angle. Use the arc tangent function to convert it to degrees. For a 69x50 prop, it would be 50/69/2.36=0.30705 and atan(0.30705)=17.069 degrees. The 2.36 is 3/4’s of pi..
That plane in @17:39 is a Tucano, yes?
The roundout to flare was a little aggressive, but overall being more aggressive is safer than being delayed. I like to roundout closer to the surface, then gradually hold the nose up as the mains settle. Getting to know exactly how close your mains are to the ground will also allow you to roundout right onto the mains if the winds are making keeping the airplane in control difficult as it slows.
Back ground music is terrrible
What do the letters "Z" and "V" at 1:12 and 1:19 in this video mean? Whose planes are these?
Perfect video and explains! Thanks.
Nice work, this really helped fill in gaps.
I like this kind of video
Must be nice to have all that in your mind
i love the principle of the propeller engines
More explanation less period music.
Great landing and good advice, thank you!
Sir please continue these which will help me develop my business in India
Wow this is a great video explanation thank you for posting this !! I had such hard time understanding aoa in relation to flight, this helped so much! 💥👍🏼😀🙏🏼🙏🏼🙏🏼
There are no better educational aids than these old school instructional videos. This was tremendously helpful in helping me understand propeller principles. Thank you!
Santos Dumont>>>>>>> Wright brothers
Fantastic. This will be great knowledge in regards to airship design for my fantasy novels.
Thank you Lord for allowing me to find this gem.
I love science and god this was boring
@David Wright must be one of the Wright Brothers with having this video in his archive.
Couple more things would have been great to add: airspeed ktas and flap setting degrees PS: nice greaser 👍🏻
cepaj
Ok, now I really feel DUMB!!!!☹
I’m sick of people claiming the Wright Bros. We’re the first, they weren’t and 10,000 newspaper accounts at the time, a full 5 years BEFORE the Wright Bros Kittyhawk flight verified that!!!!
[3:11] is no one gonna talk about how it said "like men, propellers matured quickly?" or did i hear it wrong?
That was a great video, thanks!
Already knew most of this, but still a great vid