4 Designs for US Army's FARA

Helicopters and tilt-rotor aircraft
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Scorpion1alpha

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Unread post19 Oct 2020, 12:40

madrat wrote:Image


Would this thing even be considered a "helicopter"???

aaam wrote:I think I remember reading somewhere that NOTAR tends to lose effectiveness in thinner air, and since the "hot and high" is a major part of FARA (and FLRAA)'s specifications, maybe it was thought it wouldn't give the performance needed?


I don't know, but if I were to guess, you're right.
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madrat

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Unread post19 Oct 2020, 13:28

Scorpion1alpha-
It's an Israeli drone with twin fixed-lift rotors and the two rotors in back can swivel. It is considered a helicopter.

Very similar idea to:
Image
There weren't many pictures on it to see the default cant of the two main rotors. I assume they are rotating in opposite directions to counteract torque.
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Scorpion1alpha

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Unread post20 Oct 2020, 12:29

Thanks.
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KamenRiderBlade

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Unread post11 Jan 2021, 12:59

Bell's EDAT Tail Rotor should be a interesting solution.

https://verticalmag.com/news/bell-elect ... questions/
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charlielima223

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Unread post24 Mar 2022, 14:14

Testing for the next generation of turbine engine that will replace existing helicopter engines and will be used in the FARA and FLRAA to begin soon

https://breakingdefense.com/2022/03/arm ... ep-engine/
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madrat

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Unread post24 Mar 2022, 22:28

No more T700s? No way.
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aaam

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Unread post26 Mar 2022, 21:44

charlielima223 wrote:Testing for the next generation of turbine engine that will replace existing helicopter engines and will be used in the FARA and FLRAA to begin soon

https://breakingdefense.com/2022/03/arm ... ep-engine/



Stand by for acronyms:

The T901 was the winner of the the competition for the ITEP (Improved Turbine Engine Program). It is the engine Army required the FARA bidders to design their aircraft around. In addition, it is planned to replace the T700 in UH-60 and AH-64.

It is too small for FLRAA. The engine the Army was going to develop for that is FATE (Future Affordable Turbine Engine). It may also replace CH-47 engines. Originally Army specified that FLRAA competitors must design around the winner of that competition. However, Army's schedule for FATE does not match that of FLRAA, and it may not be ready in time for initial production of FLRAA. Army has released Bell and Sikorsky from that requirement, at least for EMD and initial production. Bell announced some time back they're going to use the Rolls AE 1107F, and later Sikorsky said they'd use the Honeywell HTS7500.
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