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Oops Tailslide - VNE Dive, Wind Up Turns, and Aerobatics - last flight of JellybeanThorp program 

Elliot Seguin
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The tailslide was unintentional. The goal for that maneuver had been to demonstrate the minimum entry speed for a loop and included a build-up to that maneuver (13:41 in the video). When the airplane stalled on the upline I knew I was in trouble, the plan had been to use a hammerhead to recover...it sort of worked. Important note: a T-18 has no uplock on the flaps, so if the airplane goes to negative G there is the risk that the flaps will deploy uncommanded and damage the airplane.
This the last flight of the JellyBeanThorp program included a dive to VNE (never exceed speed or redline), a wind-up turn to the published maximum G for this weight, and finally a minimum entry speed exploration for loops and rolls.
Likely the highest risk flight of the program it was also tons of fun. Super stoked to have been able to fly this famous Thorp, let alone take it to the corners. It's always a bit bittersweet when a program wraps up and you have to give the airplane back to the owner...and I can admit this one hurt more than most.
1:15 - Fueling Montage
2:17 - Flight Introduction (Speaking)
3:53 - Dive to VNE w/stick wraps (w/ speaking introduction)
7:54 - Wind Up Turn to Max G (w/ speaking introduction)
11:00 - Roll Minimum Entry Speed Demo (w/ speaking introduction)
13:41 - Loop Minimum Entry Speed Demo (w/ speaking introduction)
17:42 - Tail Slide (w/ speaking introduction)
20:59 - Post Flight Inspection / Cockpit Notes (Speaking)
22:04 - Landing Montage
The RU-vid coverage (see JellyBeanThorp playlist) of this program only includes the more visually interesting testing. The full report (linked below) discusses the rest of the testing that was done.
The JellyBeanThorp program report is available here: docs.google.co...
A big thank you to our sponsor Butler Parachute (www.butlerpara.... My HX-400, highspeed opening, emergency parachute gives me the confidence I need to do this kind of high-risk flight test. Butler is the best in the business and we appreciate their support.
Wasabi Flight Test Website
wasabiaero.com/
Elliot's first flight in the airplane
• JellyBeanThorp Familia...
Pitot static baseline flight
• Pitot/Static Baseline ...
Trailing cone flight one
• The Cone - Airspeed Ca...
2nd trailing cone flight
• Trailing Cone w/ a cro...
Aft CG Flight
• Aft CG Testing - Jelly...
Thank you for reading all this.
airplanes are cool
#airplanesarecool #flighttest #testpilot #flying #avgeek #taildragger #experimentalaircraft #flight #Pilot #thorpT18 #homebuiltaircraft #aerobatics #divetesting #aviation #highfive

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17 сен 2024

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Комментарии : 183   
@xyzzy177
@xyzzy177 4 года назад
I really like these longer videos with explanations of what your doing and why. Thanks!
@utopiasnow
@utopiasnow 4 года назад
tlane 177 thank you
@ThunderAppeal
@ThunderAppeal 2 года назад
And there is a high likelihood that you dont know what the hell he is talking about.
@pecanflyboy
@pecanflyboy 4 года назад
Elliot, great job, once again. I appreciate you giving the Thorp the credit it is due. As the first all metal homebuilt design (plans only, no kit), it's been flying since the '60's and just about every fault (very few) has been exposed over the years. It was originally designed as a sport, open cockpit aircraft based on 4' wide aluminum sheets and a Lycoming O-290 ground power unit. Your example shows the how the aircraft has evolved to a Lycoming O-360/CS prop cruiser with the performance of the modern RV's. Couple of comments: Tail flutter: Like most aviation stories, a Thorp had a flutter event as a result of a user intentionally and grossly overspeeding the aircraft, and paying for it with his life. As a result, Thorp added the stabilator counter balance and stiffeners in key areas. The stabilator is attached and pivots within two brackets that have bronze bushings. It is very important for a Thorp flyer to check for slop in the stabilator on every walk around, to ensure there is no excess play in this bushing and the tab linkage. Slop in this area can bring the flutter envelope down significantly. Simply wiggle the tip of the stabilator on the walk around, and wiggle the tab to make sure there is no excessive play. Tailslide: As I mentioned before, the vertical stabilizer and rudder were designed for an O290, and could be larger for a 180HP nose heavy Thorp. This area can be "blanked" out easily at high AOA, rendering the rudder useless. I think this is what you experienced, as the aircraft did not respond to your hammerhead rudder input, and became a lawn dart until airflow returned to the tail. There are examples of larger rudder/stabilizers in the community with good results. Just respect the rudder, as it has its limitations. Tail stall: One other issues with the stabilator is that it can stall. The full 40 flaps position was abandoned as there were instances where nose heavy, high AOA, full flaps would disturb the airflow over the stabilator and cause it to stall, nosing the aircraft over for recovery. Users need to ensure that this flap position is disabled. I get the feeling you really enjoyed the airplane. It is a great design. I make these comments for awareness, because it is important to understand any design you may be flying and its limitations. Fly safe!
@utopiasnow
@utopiasnow 4 года назад
Such a great airplane. Thank you for the comment!
@robertcringely7348
@robertcringely7348 4 года назад
"Disarming to the pilot..." That's a new term for me. VERY useful with my T-18 almost ready to go. Thanks, Elliot.
@utopiasnow
@utopiasnow 4 года назад
Robert Cringely thanks Bob!! Excited that your plane is getting close!!
@flyingkub
@flyingkub 4 года назад
Thanks Elliot, for the explanations of how you do the tests. The thing that marks you above most is that you explain your mistakes as well, we all learn from mistakes and having someone willing to show their mistakes, helps us all keep safe.
@utopiasnow
@utopiasnow 4 года назад
Thanks man, it's always stressful to tell these kinds of stories. But this kind of comment helps keep it in perspective.
@trytolookbusy
@trytolookbusy 4 года назад
This guy is amazing! If I built a plane, I'd pay him whatever he charges to run it through it's test program. I'm a big risk taker myself, but his experience is invaluable!
@utopiasnow
@utopiasnow 4 года назад
Thanks man
@kevchilton908
@kevchilton908 4 года назад
Truly amazing! What a brilliant, captivating off-the-wall series showing tests you'd never normally see. Every move dealt with so expertly and with full explanations. Thank you so much for your time and effort in putting this series together Elliot.👌
@sanderssmoketech8275
@sanderssmoketech8275 4 года назад
Thank you Kevin, I appreciate the note. Let me know what we can be doing better!!
@dustinnablo
@dustinnablo 4 года назад
Excellent content Elliot. Don't ever hesitate to get heavy into the technical details. The sound track is great too. Nice work.
@utopiasnow
@utopiasnow 4 года назад
thanks
@rob737700
@rob737700 3 года назад
Retired airline guy.... These are great videos, I'm hooked. I know very little (if anything) about this type of flying, home built or experimental aircraft, etc. Great stuff.
@user-nm9fk7cb4b
@user-nm9fk7cb4b 3 года назад
The rehearsals of systematic reasoning is near impeccable. Excellent work
@warwickboulter3470
@warwickboulter3470 4 года назад
Epic to see the Roulette pic in the BG of your office. Yeeeew from AU!
@utopiasnow
@utopiasnow 4 года назад
Warwick Boulter awesome
@QuentinCarter1975
@QuentinCarter1975 3 года назад
Another excellent video. Interesting to see the pax side seat belts floating around at negative G. Good practice would suggest they're clasped and tightened in single pilot ops.
@utopiasnow
@utopiasnow 3 года назад
Thanks for the comment!!
@Jacobmettler88
@Jacobmettler88 4 года назад
This is great, thank you for posting your work. Airplanes are Cool.
@utopiasnow
@utopiasnow 4 года назад
Jacob Mettler thank you!!
@johnholmes4960
@johnholmes4960 3 года назад
I had a laser cutting shop and I made many parts for these planes. With my laser being qualified to cut flight critical parts, that opened many doors to me. Been retired for eight years now. I do not miss the work, but I do miss the people.
@utopiasnow
@utopiasnow 3 года назад
Great to have you hear. Thanks
@G_Money72
@G_Money72 4 года назад
Absolutely my favorite vids! The way you break down your debrief makes sense in my brain. Thank you
@utopiasnow
@utopiasnow 4 года назад
Thank you
@montreysmitherman7466
@montreysmitherman7466 3 года назад
Brother, you have the coolest job I can think of,
@utopiasnow
@utopiasnow 3 года назад
I am very lucky. Thank you for the comment and the support.
@HerbertKojetin
@HerbertKojetin 4 года назад
Love the plane and love the channel! Thanks for sharing.
@utopiasnow
@utopiasnow 4 года назад
Herbert Kojetin thank you!!
@ivanmarinoni8962
@ivanmarinoni8962 4 года назад
Really interesting to go through the process of these tests; all the considerations about the aerodynamics add an exceptional value to the video. Please, keep posting videos like this☺
@utopiasnow
@utopiasnow 4 года назад
Thank you for the note!!
@alejandrosaldana1244
@alejandrosaldana1244 4 года назад
Thanks for sharing and explaining! Very good!
@utopiasnow
@utopiasnow 4 года назад
Thank you for the note
@paulh8729
@paulh8729 4 года назад
Man, I love the process. I hope to have that level of experience some day.
@utopiasnow
@utopiasnow 4 года назад
Paul Herrera thanks man
@jcheck6
@jcheck6 4 года назад
Great vid. As we said in the military, "unload for control."
@utopiasnow
@utopiasnow 4 года назад
jcheck6 well said. We carry this moment as one of our 11 lessons learned for 2019 but I go back and forth about what the action is against that lesson. For instance the hammerhead recovery was likely a bit late but as a strategy for recovery I don’t think it was wrong. My second favorite recovery would be to positive pitch out. If you stay positive the engine would have kept running, which would have kept the tail blown. However bouncing off the stall buffet in an airplane prone to stall-wingdrop....sounds like begging for a spin entry. Anyway, simpler things like securing the passenger harnesses, and the gps antenna are easy takeaways. Thanks for the note.
@pdutube
@pdutube 4 года назад
I love the T-18 and it's been a battle in my mind between it and the Mustang II, which has a big more shoulder room.
@utopiasnow
@utopiasnow 4 года назад
They are both cool airplanes.
@pdutube
@pdutube 4 года назад
@@utopiasnow Absolutely and cheaper than RVs on the used market. I like that they can be built from plans, no kit required. RVs are awesome too btw!
@QuentinCarter1975
@QuentinCarter1975 3 года назад
As an M2 owner I might be biased, but they're an awesome aeropane.
@HotRodKush
@HotRodKush 4 года назад
This is so cool, seeing the inner workings of being a test pilot is fascinating!
@utopiasnow
@utopiasnow 4 года назад
Glad you enjoyed it!
@Joe_Not_A_Fed
@Joe_Not_A_Fed 3 года назад
I just stumbled upon your channel today...better late than never. It just dawned on me why I enjoy your vids so much (besides...it's test flying frickin' airplanes) you're a natural, born, troubleshooter. You love solving problems. Troubleshooting is an art, as much as painting and sculpting...and more than even science. Science is for the 'how do we fix this'. Troubleshooting is the 'why'...and that's art...and a rare one at that. I'm guessing your brain can't shut off if there's an unsolved something rattling around in there. I can dig it. Thanks.
@hechtspeed
@hechtspeed 4 года назад
So badass! What a gorgeous lil bird!
@utopiasnow
@utopiasnow 4 года назад
Hecht Speed it is a sweetheart
@BVRDesign
@BVRDesign 4 года назад
Super edifying. ⚡️⚡️⚡️
@utopiasnow
@utopiasnow 4 года назад
Beyond Visual Range thank you
@alejandrosaldana1244
@alejandrosaldana1244 4 года назад
It has been a long time since last video! Hope your family and you are well. Hope to see new videos soon!
@utopiasnow
@utopiasnow 4 года назад
Working on it! thank you
@jamesharkness1058
@jamesharkness1058 4 года назад
Great video! Learned a lot from it. Thank you Elliot!
@utopiasnow
@utopiasnow 4 года назад
Thank you James!!
@cosroe2
@cosroe2 4 года назад
You've very quickly become an inspiration for me since I watched your Flightchops episode. Looking forward to starting my glider aerobatics soon! Keep up the awesome content.
@utopiasnow
@utopiasnow 4 года назад
Thanks man, let me know how the glider aerobatic training goes!!!
@Anything_With_An_Engine
@Anything_With_An_Engine 4 года назад
Love these videos, always leaves me wanting more to watch!
@utopiasnow
@utopiasnow 4 года назад
Thanks man
@dg202
@dg202 4 года назад
One of my favourite videos. Love the systematic approach - I can only hope my test pilot is half as thorough when the time comes. Looked like the passenger harness wasn't done up and restrained. You were wearing a helmet, so getting hit in the eye shouldn't have been a problem, but loose objects in the cockpit should be avoided, especially when doing something like this. Still a great video though!
@utopiasnow
@utopiasnow 4 года назад
yeah, missed the harness that day. thank you
@spitoinkr
@spitoinkr 4 года назад
Very nice video, Elliot. Am I correct to say that it looked like you only pulled about 2.4-2.5G when attempting the 150mph loop? Wouldn't it have worked better if you have pulled more G to make the plane go around quicker before getting in the situation that you've found yourself in? As many others have said, I thank you for posting it with all the explanations going through the maneuvers.
@utopiasnow
@utopiasnow 4 года назад
Manie Rossouw that’s the odd part of the aerobatic log book entry. There are many ways to do a loop or a roll. But the logbook entry doesn’t leave room for much of a description. So what does the logbook entry really mean? Thanks
@spitoinkr
@spitoinkr 4 года назад
@@utopiasnow keep up with the testing videos and explanations. There really isn't much like it on RU-vid. Safe flying.
@ForFunFlyer
@ForFunFlyer 4 года назад
Very interesting stuff, Elliot! 👌🏻
@utopiasnow
@utopiasnow 4 года назад
Thank you FFF!!
@Invertedaviation
@Invertedaviation 4 года назад
Awesome video! Love the channel
@utopiasnow
@utopiasnow 4 года назад
Thank you for the note.
@lonestarreview
@lonestarreview 3 года назад
Very informative. Thanks for putting this on!
@LaborchefDrKlenk-gb8rv
@LaborchefDrKlenk-gb8rv 4 года назад
This is probably a common ask question, but why is he using mph instead of knots?
@utopiasnow
@utopiasnow 4 года назад
Laborchef Dr. Klenk thank you for the comment. The gauge in the airplane was in mph, and the speeds placarded in the airplane were in mph. The original documentation for the airplane was also in Mph. Thanks again.
@jeffrobodene1485
@jeffrobodene1485 4 года назад
I'll never fly one of these but, as always, I enjoyed the video. Fly safe.
@utopiasnow
@utopiasnow 4 года назад
Jeffro Bodene thanks
@groomlake51
@groomlake51 4 года назад
I use pledge on all my race cars!!! If you spray pledge in your wheel wells the rubber from the burn outs won’t stick to anything! It repels dirt also very well
@utopiasnow
@utopiasnow 4 года назад
good tricks
@rnapol3266
@rnapol3266 4 года назад
watched the whole thing. It was amazing. Keep posting videos man. Your channel is great
@utopiasnow
@utopiasnow 4 года назад
Thank you, I appreciate the feedback.
@garyspencersalt9449
@garyspencersalt9449 4 года назад
The AH seemed to be having a good time as well...!
@utopiasnow
@utopiasnow 4 года назад
Yeah, it wasn't happy.
@Rapsaj
@Rapsaj 4 года назад
That flex in the horizontal stabilizer went the hammerhead went slightly pear shaped was terrifying to watch.
@sanderssmoketech8275
@sanderssmoketech8275 4 года назад
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pbznX_69t6w.html exactly~!! The post flight inspection was significant. Good eye.
@utopiasnow
@utopiasnow 4 года назад
It was a serious post flight for sure
@ronbarden7210
@ronbarden7210 4 года назад
That is a S-18, not a T-18. We built a T-18 back in the mid 1970's. The inner and outer wing panels are both 4' in span on the T-18. The S-18 has a shorter inboard panel span and a longer outboard panel span. The T-18 is an awesome aircraft.
@utopiasnow
@utopiasnow 4 года назад
Ron Barden I would go one step farther and say this is “the S18”, since it is Lu Sunderland’s prototype.
@ronbarden7210
@ronbarden7210 4 года назад
@@utopiasnow True. My dad Jerry Barden and John Thorp were partners in the aviation business when I was young. They designed the original stabilator (sp?). My dad regretted patenting it. They designed the Cherokee for Piper. We used Thorp's templates to lay out all the skin pieces for our T-18. That made it much easier to build using matched hole tooling.
@ronbarden7210
@ronbarden7210 4 года назад
I meant "not" patenting it.
@walnut_trail_farm
@walnut_trail_farm 4 года назад
Awesome stuff Elliot. Question. Left hand placement seems pretty intentional I.e. you never really move it. Why? What are you Keeping contact on?
@utopiasnow
@utopiasnow 4 года назад
Good eye, I was watching that as well. I don't have a good answer. I was also switching hands between maneuvers, can't explain that either. Another example of the benefit of have cameras in the cockpit..."why did I do that...better next time". Thank you for the comment.
@JJM2222
@JJM2222 4 года назад
awesome vid! Thanks.
@JJM2222
@JJM2222 4 года назад
great angles!
@utopiasnow
@utopiasnow 4 года назад
@@JJM2222 Thank you, it was a great day.
@CapFreddy
@CapFreddy 4 года назад
How come I didn’t know this channel? Great stuff!
@utopiasnow
@utopiasnow 4 года назад
Thanks
@h0ll1s
@h0ll1s 4 года назад
Another great video, love all of this stuff and learning new things!!
@utopiasnow
@utopiasnow 4 года назад
Thank you Ben!!
@retydeere1111
@retydeere1111 4 года назад
Your great Elliot! We miss you and your uploads lately. Greetings from cno, the other side of the fence where Joel came from.
@utopiasnow
@utopiasnow 4 года назад
Thanks for the note. More uploads coming!!
@amirhess
@amirhess 4 года назад
great video, I learned a lot
@utopiasnow
@utopiasnow 4 года назад
thank you for stopping by
@Gunhound507
@Gunhound507 4 года назад
Elliot, thank you very much for sharing these videos with us. What would be a good resource for taking training for test pilot/elevated risk maneuvers? I wouldn't necessarily say that I aspire to be a test pilot but would like to have the confidence that sort of training brings to the table in the event I end up in a high-risk situation. As a low-time VFR pilot, things like spin/upset recovery training are an option but don't really seem to cover the more critical thinking you display here.
@utopiasnow
@utopiasnow 4 года назад
I would recommend the National Test Pilot School in Mojave.
@billwessels207
@billwessels207 4 года назад
In the military, it was referred to as the pucker factor. So how high was the pucker factor? Great video. Enjoyed it. Keep up the great work.
@utopiasnow
@utopiasnow 4 года назад
Bill Wessels thank you! We had the benefit of altitude so I had time. I was ~6k’ above bailout altitude I decided when I got on the ground that I was probably two errors in, and I had maybe four more errors before I’d start thinking about going for help. Thank you
@joshwand
@joshwand 4 года назад
15:21 when the artificial horizon says " ...aaaand I'm done...Out."
@utopiasnow
@utopiasnow 4 года назад
about right
@RoamingAdhocrat
@RoamingAdhocrat 3 года назад
this is why you must not do aerobatics while flying in cloud
@simplemanfc3
@simplemanfc3 4 года назад
So pledge is you secret weapon... Do you use that on the canopy as well? Always trying to pick up some of your tricks when watching..
@utopiasnow
@utopiasnow 4 года назад
simplemanfc3 Hahahah!! Pledge is a Sanders thing, I just try to do what the owner wants :)
@victor-emmanuel7485
@victor-emmanuel7485 4 года назад
Elliot, I hope you’re doing well? Just rewatched some of your videos, almost forgot how awesome they are 👍
@utopiasnow
@utopiasnow 4 года назад
Welcome back! Thank you
@robertcringely7348
@robertcringely7348 4 года назад
"... disarming for a pilot." Indeed!
@utopiasnow
@utopiasnow 4 года назад
hahahaha thanks
@845SiM
@845SiM 4 года назад
All this just sounds to me like “push it until it breaks”. Glad you know what your doing. These planes you test are they one off customs or part of kit/manufacturing program, and your testing the concept and design?
@utopiasnow
@utopiasnow 4 года назад
Chris, this airplane is a well established kit. This aircraft was built decades ago and flown for a long time before being modified recently. So this build up was much faster than would be done with a new aircraft.
@rossclements8874
@rossclements8874 4 года назад
Why is there no flap uplock on the thorpe? I would think that you'd want to have one for regular flying, and especially for mild aerobatics.
@utopiasnow
@utopiasnow 4 года назад
yea its fine for cross country. I have trouble faulting Mr Thorp though
@tsclly2377
@tsclly2377 3 года назад
Cool.. pushed it.. 'till it puked... and the gyro.. So the gryo wasn't cage-able?
@chupacabra1765
@chupacabra1765 3 месяца назад
I would put try puting some jelly beans on a tin plate sitting on the dash. If they start dancing around then there's some resonant vibrations being transmitted through the flight controls, which cound indicate eminent flutter.
@pilotenistnichtsverb
@pilotenistnichtsverb 3 года назад
Very interesting episode! Yet, why didn't you cage the AH during the aeros?
@g6rcteam81
@g6rcteam81 4 года назад
Elliot im wondering what you think about the recent high profile crash of A Thorp After canopy departure/ Tail strike. Any upgrades to this Thorp /Extra latch or beefed up . Or was the problem it was not latched properly?
@utopiasnow
@utopiasnow 4 года назад
I dont know anything about that.
@TheFleetflyer
@TheFleetflyer 4 года назад
You probably know this already, but during the loop testing, if you had been able to get to the rudder earlier in the sequence of events then it may have made the hammerhead. It looked like you were kicking the rudder when you had already run out of speed entirely, and presumably the prop wash alone wasn't enough. Apologies if this smacks of Monday morning quaterbacking! It's interesting that there was no spin testing. Over here in the UK, aircraft that are cleared for basic aerobatics but not spinning still have to demonstrate a two turn spin during flight testing so that should a future owner get into trouble the spind recovery is proven.
@utopiasnow
@utopiasnow 4 года назад
Thanks for the note. About the spin testing. So in the UK all amateur built experimental aircraft that are cleared for aerobatics have to do a two turn spin? That's interesting. Do you guys use the same definition of aerobatics that we do? Are there T-18s in the UK? Thanks
@TheFleetflyer
@TheFleetflyer 4 года назад
@@utopiasnow Hi, yes. For instance the RV-6 and RV-7 are not approved for intentional spinning by the UK CAA deligated airworthiness authority for amateur builds, the LAA. However, to gain approval to allow aerobatics to be added to the Permit to Fly limitations, during flight testing of each individual aircraft, they have to demonstrate recoverability from a two turn spin. This doesn't apply to all aircraft, just aerobatic ones. Amateur built aircraft without a declared aerobatic capability do not have to demonstrate spin recovery on an airframe by airframe basis, just once when the design is approved by the Light Aicraft Association (our EAA equivalent) - The LAA maintain a list of approved designs for amateur construction, and choosing to build something not on the list means the builder has to pay for a comprehensive structural analysis and provide it to the LAA before they may begin construction.
@andrewscott3184
@andrewscott3184 4 года назад
My first roll was in a throp, headsets came off and hung on the canopy handle. Fun airplane.
@utopiasnow
@utopiasnow 4 года назад
fun plane for sure
@Mahdi-bb4hg
@Mahdi-bb4hg 4 года назад
Great content Elliot! Is there anyway I can find a copy of the article you were talking about at 5:12 online? Thanks!
@sanderssmoketech8275
@sanderssmoketech8275 4 года назад
There are several articles but they are behind the sport aviation pay wall. If you are a EAA member you can search the archives for all of Thorp's contributions, they are all worth reading. Thank you!!!
@Mahdi-bb4hg
@Mahdi-bb4hg 4 года назад
@@sanderssmoketech8275 Perfect, thank you, I will!
@utopiasnow
@utopiasnow 4 года назад
Thanks guys
@coreyballard8359
@coreyballard8359 4 года назад
Great vid. Love seeing the testing process. Looks like the attitude indicator had a fun time during the testing. How loud was it at Vne? I find myself relying on the sound of the wind to determine how fast/slow my students are going a lot of times before I even get a chance to reference the airspeed indicator.
@utopiasnow
@utopiasnow 4 года назад
Yeah the AH was not happy. As far as wind noise at VNE it's not a loud airplane. Thank you for the note!!
@coreyballard8359
@coreyballard8359 4 года назад
Elliot Seguin interesting stuff. Thanks for sharing!
@johnfife3062
@johnfife3062 4 года назад
Very cool! I've enjoyed following this series. Somewhere I missed the framing of your work: Who's paying the freight for your testing and why is there such thorough testing on a (famous) airplane designed...in the year I was born? Isn't this the testing to which prototypes are normally subjected before 1,600+ plans are sold? I skimmed all 23 pages of your 22-page report but didn't find the answer. Good fun and many thanks.
@utopiasnow
@utopiasnow 4 года назад
John Fife this is the standard FAA required testing for any newly built (even if it’s a kit) experimental aircraft, or in this case after a major modification was made to the airplane. It is common for builders to short cut this testing especially on shake and bake quick built aircraft. But as a hired test pilot I have to be sure that when I sign off a phase one test program (as required by the FAA) I have complied with the intention of and the letter of the law. A test pilot is only as good as his report and if people can’t trust your word you don’t have much left to offer. Thanks for the comment!!
@eastendmafia1773
@eastendmafia1773 2 года назад
Rip to that gyro around 15:30
@ShuRugal
@ShuRugal 4 года назад
i just noticed at 17:00 that the attitude indicator has decided to take a lunch break
@raffly4449
@raffly4449 2 года назад
Had anyone used a stick shaker in place of stick raps ? At least you can control the frequency then with motor RPM. Just a thought.
@HerbertTowers
@HerbertTowers 3 года назад
I notice that the (shown) roll maneuvers were all done to the left. You know the rest! N.B. Prop/engine direction.
@utopiasnow
@utopiasnow 3 года назад
Thanks for the note. I do prefer to roll to the left. I appreciate the comment.
@mungusaurus
@mungusaurus 4 года назад
Belt Check!
@utopiasnow
@utopiasnow 4 года назад
yeah, and the GPS antenna behind the panel. You can hear the belts hit the canopy.
@user-PyR064
@user-PyR064 4 года назад
What would be a minimum bailout altitude in a plane that is considered unrecoverable due to something like a wing rip for example? Or is it standard procedure to guide it in till the last minute a bailout is necessary even though all control surface has been lost?
@utopiasnow
@utopiasnow 4 года назад
I would start the conversation at 3,000' AGL for a minimum bailout. Briefed as "bailing out if out of control below X,XXX feet"
@joekomo3991
@joekomo3991 4 года назад
hi Elliot, I was wondering why you did't spin it. Is that not what kills everyone? unable to exit the spin sequence?
@utopiasnow
@utopiasnow 4 года назад
joe komo the Thorps have been successfully spun but it doesn’t seem common in that community. The short answer is spins were outside of the scope. The rolls and loops were only barely within the scope of the program. The intent is the airplane is used as a short distance (less than 100 mile) commuter....so it’s hard to justify the cost and risk to the program of a spin series. Thank you for the note!!!
@joekomo3991
@joekomo3991 4 года назад
​@@utopiasnow thanks, my next door buddys have 3 thorp's. That's why I am concerned!
@joekomo3991
@joekomo3991 4 года назад
The FAA made me spin this for STC work..ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8-T0zuV3pg0.html
@TgardnerH
@TgardnerH 4 года назад
How do you feel about flying an airplane with the fuel tank between the panel and engine? It has always struck me as bad for survivability in a crash.
@utopiasnow
@utopiasnow 4 года назад
yes
@foesfly3047
@foesfly3047 Год назад
This is the first time I’ve heard you use ‘dirty words’ 🤭
@fernandopasini6350
@fernandopasini6350 4 года назад
good morning, you have video of the test with gas turbine on the white plane
@utopiasnow
@utopiasnow 4 года назад
www.redbull.com/us-en/episodes/mojave-test-pilot-breaking-the-day-s01-e01
@RoamingAdhocrat
@RoamingAdhocrat 3 года назад
didn't think you were a rapper!
@muttbone01
@muttbone01 3 года назад
What's the story with the artificial horizon in that craft?
@utopiasnow
@utopiasnow 3 года назад
Tough day for the artificial horizon.
@RichoHealey
@RichoHealey 3 года назад
What's up with the ball on the right shoulder of his bailout?
@utopiasnow
@utopiasnow 3 года назад
Its called a green apple. More info here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a-lceaOL2E8.html
@RichoHealey
@RichoHealey 3 года назад
@@utopiasnow I saw the zip on the rig and wondered if that was it, thanks for the quick reply!
@andrewjamez
@andrewjamez 4 года назад
What is it with Pilots always using pledge?
@utopiasnow
@utopiasnow 4 года назад
hahaha, it was all I could find that morning. The airplane seemed to pretty to just use water. Dennis would have just used water.
@mauriceoconnor6246
@mauriceoconnor6246 2 года назад
The prop wash, slipstream or whatever you want to call it is going around the aircraft placing a force on the vertical surfaces of the tail which try's to yaw the aircraft to the left , so if you pushed full left rudder rather than right you would be helping this tendency rather than opposing it . The fact that your unaware of this means in my opinion your not suitable for testing any aircraft.
@utopiasnow
@utopiasnow 2 года назад
Interesting. Yeah the plan was to hammerhead out, so it wasn’t the yaw that was a surprise it was the snap. But thanks.
@chriswarrington108
@chriswarrington108 2 года назад
Yeah, as soon as that engine quit you were screwed. Not even an Extra can hammerhead with zero airspeed and zero prop blast. An engine with a standard carburetor (and not a pressure carb) will quit every single time at even slightly negative G as the fuel floats off the bottom of the float bowl. At that point, at that attitude, you’re coming down backwards, whether you like it or not. Great job holding on tight and not letting a flight control slam to it’s stop.
@tamarindocoral
@tamarindocoral Год назад
Your horrible grammar leads me to believe you've got zero business criticizing his flying abilities.
@mauriceoconnor6246
@mauriceoconnor6246 Год назад
@@tamarindocoral My humblest apologys, I will take some time out to correct my grammar and hopefully come up to a standard which is acceptable to you. If I achieve this goal I will tentatively request your permission to comment in the future and you might say ' you now have business to comment ' if I even come close to your eloquence it will be one of the finest days of my life.
@GOAFPilotChannel
@GOAFPilotChannel 3 года назад
Why do you always fly with oxygen?
@utopiasnow
@utopiasnow 3 года назад
I wear the mask for three reasons 1 Smoke in the cockpit 2 Better comms 3 crash protection More info here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a-lceaOL2E8.html
@bernardanderson7569
@bernardanderson7569 4 года назад
When and where can I order one to be built
@utopiasnow
@utopiasnow 4 года назад
There are projects around. It was a very popular kit.
@machrukus
@machrukus 4 года назад
Bernard Anderson try Thorpcentral.com
@andrewscott3184
@andrewscott3184 4 года назад
What years is the fuel truck?
@utopiasnow
@utopiasnow 4 года назад
58 I think? It is the most awesome
@andrewscott3184
@andrewscott3184 4 года назад
@@utopiasnow I've been on a tour of Sanders place but never saw the fuel truck, old trucks are cool. Great channel Elliot, learn so much watching, Cheers.
@mikercflyer7383
@mikercflyer7383 4 года назад
Great video but a lot of the language is greek to me 😉what is a Stick Rap.
@utopiasnow
@utopiasnow 4 года назад
Michael Stern a step control input used to measure the damping associated with flutter.
@pdutube
@pdutube 4 года назад
Rudder kicks are used for similar reasons.
@stay_at_home_astronaut
@stay_at_home_astronaut 4 года назад
"wearing" a parachute is not the same as "using" a parachute. ;-)
@utopiasnow
@utopiasnow 4 года назад
I don't understand.
@stay_at_home_astronaut
@stay_at_home_astronaut 4 года назад
@@utopiasnow you don't "use" the parachute until you actually pull the D-ring. Up until that point you are just "wearing" it. ;-)
@utopiasnow
@utopiasnow 4 года назад
@@stay_at_home_astronaut Got it
@stay_at_home_astronaut
@stay_at_home_astronaut 4 года назад
@@utopiasnow I got too slow in a Great Lakes (biplane, not the amphib) while doing hammerheads, back in the 1980's... ...the reversed flow over the wings grabbed all four ailerons and jerked the stick out of my hand. I never let that happen again!
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