If boomers were only this smart...
Cliff "It Never Happened" Secord 🇺🇸🇦🇹
@CliffSecord@nicecrew.digital
Professionally licensed and self-employed aeronautical engineer, pilot and composites fabricator. Licensed, bonded & insured aircraft recovery agent.
Husband to @XeniaOnatopp
Romans 12:19
Ex Albis Potentia
All posts are for entertainment purposes only.
Husband to @XeniaOnatopp
Romans 12:19
Ex Albis Potentia
All posts are for entertainment purposes only.
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Boomer will never accept the basic fact that he is the weak man who hastened hard times...
For sure. Having parts & maintenance handy across the nation are always a good thing.
Ever try out a Piaggio P.180?
Cheesy-looking but man, she is a dream to fly!
Cheesy-looking but man, she is a dream to fly!
A great, great airplane.
One of our accounts has us doing aero analysis work on the U-28 variants for AFSOC.
One of our accounts has us doing aero analysis work on the U-28 variants for AFSOC.
We'll be doing a Rotax 916 iS A driving a Sensenich 3B0 prop on an FP CS hub on our bird.
Full FADEC control from the powertrain... set & forget. Prop set at the push of a button.
It'll make me yearn for the days of constantly screwing around with throttle, pitch, mixture and manifold pressure! Fuck it...who am I kidding?😆
Full FADEC control from the powertrain... set & forget. Prop set at the push of a button.
It'll make me yearn for the days of constantly screwing around with throttle, pitch, mixture and manifold pressure! Fuck it...who am I kidding?😆
Why do you need to articulate an LSA-class propeller? There is no need to. With as low an MMOI they have, articulating them will introduce way more problems than something like this will solve.
But if you have the data to make a solid case for this, we'd be open to at least looking into the concept
But if you have the data to make a solid case for this, we'd be open to at least looking into the concept
Be sure to read "Helicopter Theory" by Wayne Johnson. There you will get great insights on refining your concept and dynamic scaling for any modeling work you intend to do.
Additionally, you can also validate the aerodynamic modeling of your rotor in QBlade (open source).
Additionally, you can also validate the aerodynamic modeling of your rotor in QBlade (open source).
>In fact modern drone blades are loosely held on hinges. The centrifugal force is enough that you don't need to hold tightly and not doing so eliminates a bunch of forces that you really don't want.
Small UAS prop blades are not articulated in any form, nor is it necessary due to their inherent low MMOI.
This said, you are correct in your assertion that rotor articulation, which is a standard feature on countless rotorcraft currently flying, allows the individual blades to droop, flap, lead & lag as needed to cancel out the insane centrifugal, centrepedal, gyroscopic & aerodynamic forces at play.
Unique rotorcraft, such as the V-22 Osprey, have a semi-hingeless system that, in the absence of the ability to lead or lag its blades as needed, compensate for that in the form of pendulum weights. The system can still droop & flap as required.
Other rotorcraft like the Bell 525 or the Sikorsky S-70/S-92 et al, use both full articulation and bifilar pendulum weights to cancel forces and assure a smooth ride.
Small UAS prop blades are not articulated in any form, nor is it necessary due to their inherent low MMOI.
This said, you are correct in your assertion that rotor articulation, which is a standard feature on countless rotorcraft currently flying, allows the individual blades to droop, flap, lead & lag as needed to cancel out the insane centrifugal, centrepedal, gyroscopic & aerodynamic forces at play.
Unique rotorcraft, such as the V-22 Osprey, have a semi-hingeless system that, in the absence of the ability to lead or lag its blades as needed, compensate for that in the form of pendulum weights. The system can still droop & flap as required.
Other rotorcraft like the Bell 525 or the Sikorsky S-70/S-92 et al, use both full articulation and bifilar pendulum weights to cancel forces and assure a smooth ride.
I couldn't even get that- It took me six months in 2021 of working to break the do-nothing nigger barrier to get at least some of the VA grant I was awarded to start the business. The state of TX screwed us, so we recently relocated to FL, and after all these years we're about to finally get the remainder of the balance due to us.
That means we can work full-time on our main project and hire some of you!
That means we can work full-time on our main project and hire some of you!
Yeah, here in the US, push-pull is still considered multi-engine, but if you get the multi-engine rating in such an aircraft, you get the rating, but with a 'Center Line Thrust' restriction.
Yes but not really. Those with Sport Pilot certificates can only fly single engine birds, and a max of two aboard. And last time I checked, one needs a multi-engine rating to fly anything with more than one engine...even if that means two or more motors driving a single propeller.
The big debate going on right now is hybrid powertrains, like the Rotax-based system. The ICE engine is continuously running, therefore able to keep the aircraft flying, with the electric in parallel simply augmenting...but the electric motor has the ability to at least extend the aircraft's glide range in the event of ICE power loss.
Man I wish I could discuss what that group is doing!
The big debate going on right now is hybrid powertrains, like the Rotax-based system. The ICE engine is continuously running, therefore able to keep the aircraft flying, with the electric in parallel simply augmenting...but the electric motor has the ability to at least extend the aircraft's glide range in the event of ICE power loss.
Man I wish I could discuss what that group is doing!
Technically, the State of Florida considers my business a "Technology Startup". I guess "startup" is newspeak for "new small business".
We even asked why they consider as such, especially given that we didn't take a dime from any big tech or VC firm...
We even asked why they consider as such, especially given that we didn't take a dime from any big tech or VC firm...
Centerline thrust configuration, maybe. But the new MOSAIC regs, with respect to multiple powerplants, heavily favor hybridized or distributed electrical configurations, where losing one motor won't necessarily jeopardize overall flight stability.
I'm curious myself, as a hybridized Rotax powertrain effectively becomes a dual engine...
I'm curious myself, as a hybridized Rotax powertrain effectively becomes a dual engine...
Absolutely. Electrifying flight, once energy storage reaches the necessary characteristics to make it truly practical, will be a big f-ing deal.
I cannot speak much more to this due to an NDA, but we're working with a small group not far from here who is working to hybridize the Rotax 915 & 916, with the intent to develop it in flight with them down the road.
Similar to this from a few years back....but way better-
https://sustainableskies.org/euroisraeli-hybrid-powers-neat-italian-ulm/
Similar to this from a few years back....but way better-
https://sustainableskies.org/euroisraeli-hybrid-powers-neat-italian-ulm/
>but they have something like 250 firm orders from airlines
Typical marketing talking point bullshit.
They may have 250 statements of interest, but they're far from sales.
Remember, Eviation boasted of hundreds of 'firm orders' after just a short test flight. They went defunct from bankruptcy. Same with Lilium Jet...after burning through over a billion Euros of investor funds.
This said, Heart has a good chance to be viable.
Typical marketing talking point bullshit.
They may have 250 statements of interest, but they're far from sales.
Remember, Eviation boasted of hundreds of 'firm orders' after just a short test flight. They went defunct from bankruptcy. Same with Lilium Jet...after burning through over a billion Euros of investor funds.
This said, Heart has a good chance to be viable.
That little Apex is a good engine, and a beast when turbocharged- 300hp from a 1.0L 4-banger... only issue is that Yamaha no longer makes it.
>"we used to do things but we can't anymore"
This is precisely why big aero is at the cusp of a major reckoning. Boeing went all-in on legacy shit & DEI and are paying the price. Airbus, a state-owned enterprise, is only a player because Boeing tripped over itself and there is nobody else in the big jet market. I wish Tupolev, Sukhoi or Ilyushin were players, as they make a fine product, but they've been sanctioned out of the market.
The only way forward are for new companies led by our generation who are willing to take big risks to innovate.
This is one of the reasons why so many 'startups' are sprouting up all over. Some of these 'startups' are effectively branches of big aero/big tech as a way to get around onerous big corporate culture & DEI.
This is precisely why big aero is at the cusp of a major reckoning. Boeing went all-in on legacy shit & DEI and are paying the price. Airbus, a state-owned enterprise, is only a player because Boeing tripped over itself and there is nobody else in the big jet market. I wish Tupolev, Sukhoi or Ilyushin were players, as they make a fine product, but they've been sanctioned out of the market.
The only way forward are for new companies led by our generation who are willing to take big risks to innovate.
This is one of the reasons why so many 'startups' are sprouting up all over. Some of these 'startups' are effectively branches of big aero/big tech as a way to get around onerous big corporate culture & DEI.
I miss the old designs.
On left is still the sexiest passenger jet ever. Not efficient, but sexy.
Hopefully Boom's curvy new SST (on right), called 'Overture' is successful.
On left is still the sexiest passenger jet ever. Not efficient, but sexy.
Hopefully Boom's curvy new SST (on right), called 'Overture' is successful.