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The Bar / Re: Lowestoft Unknown Aircraft Sighting
« Last post by sublight is back on Today at 01:11:11 pm »
We have cameras now with ridiculously high ISO. There is just no excuse not to take pictures of anomalous craft in the sky.

Most people are relying on the cameras in their phones, which are notoriously bad at low-light.

No, they have a lot of noise in low light but they'll still get a lot of details and an outline of "something" as opposed to absolutely nothing.
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Apparently they had a passenger along, the CEO of Virgin Galactic (not Branson).

CORRECTION:  the passenger was Beth Moses the company astronaut instructor

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The Bar / Re: Lowestoft Unknown Aircraft Sighting
« Last post by TomS on Today at 12:09:07 pm »
We have cameras now with ridiculously high ISO. There is just no excuse not to take pictures of anomalous craft in the sky.

Most people are relying on the cameras in their phones, which are notoriously bad at low-light. 
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The Bar / Re: Lowestoft Unknown Aircraft Sighting
« Last post by sublight is back on Today at 12:00:36 pm »
We have cameras now with ridiculously high ISO. There is just no excuse not to take pictures of anomalous craft in the sky.
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Aerospace / Re: Space Ship II, White Knight II - projects, flights, info
« Last post by Flyaway on Today at 11:51:57 am »
Video highlights of today’s SS2 flight:

https://twitter.com/nextspaceflight/status/1099020207543255041

I reckon before they start flying commercially they’ll be aiming for that 62 mile line for the PR.
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Aerospace / Re: Sukhoi S-70 Okhotnik UAV revealed
« Last post by AeroFranz on Today at 11:06:08 am »
I think we can agree that the physics dictate that if you have more sweep, lower CL, thinner airfoils (supercritical in particular), you're going to fly faster before hitting MDD. The B-2 does well on several of those accounts, others like t/c, i don't know. I'd just be wary of applying any equation obtained through regression for cases that may be outside of the database used.

But generally speaking, an axiom in aircraft design is that you don't design in a capability that is not useful if it comes at the cost of something else more important. Unless the customer determines that they need the capability, it's much better to barely meet the requirements and get the smallest/cheapest aircraft you can. Maybe someone has better knowledge of what the thought at the time was regarding very high speed terrain following.
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The Bar / Lowestoft Unknown Aircraft Sighting
« Last post by RavenOne on Today at 10:47:03 am »
Last night local of East Anglia thought they saw some boomerang shape and posted it on mil aviation FB Group.

Cheers

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Aerospace / Re: Assault on Bin Laden: mystery of the downed chopper
« Last post by 500 Fan on Today at 10:29:59 am »
I have done a little research into the various experimental and prototype versions of the Hughes/MD500 and H-6 helicopters and a huge amount of the various technologies developed and tested by Hughes and McDonnell Douglas Helicopters between 1970 and 1990 have direct applications for use in an LO helicopter. Things like;

Development and flight-testing of quiet rotorcraft with the "Quiet One/500P and NASA/Rotonet 500E

Higher Harmonic Control (can allow the noise signature of the rotor to be "tuned")

Flight-testing of composite main and tail rotor blades

Experiments with fuselage constructed from composites

Reduced radar signature with systems like NOTAR (although not employed on the Bin-Laden Raider)

Expertise in engine exhaust IR reduction

When Hughes were acquired by McDonnell Douglas and the Phantom Works joined up with the expertise at Hughes, it certainly seems likely that they would have done some work on LO helicopters. The 1995 article in Aviation & Space Weekly seems to infer that MDHC might have had two different LO rotorcraft flying in the late 80's and early 90's. One might be an LO version of the MD500 and this might be the TE-K project that crops up on the web. What configuration the other helicopter was in is anyone's guess. Could the Bin-laden Blackhawk be based on this prior test work? Have a look at the topic over on the ARC Air Forum in the helicopter section on the Bin-Laden Raid helicopter. There are some interesting comments there that indicate that the helicopter used in Pakistan was a modified H-60.

In relation to the rotor system on the H-60 and in particular the S-92, it is anything but quiet! The SAR S-92 in Ireland lands at a hospital near where I live and I can hear it at least a solid minute before it appears as a dot in the sky. I'm not sure if disc-loading has anything to do with it but I read somewhere that the S-92 should really have been fitted with a 5-blade main rotor instead of a scaled-up system from the H-60.

500 Fan.
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Aerospace / Re: Space Ship II, White Knight II - projects, flights, info
« Last post by sferrin on Today at 09:41:49 am »
Interesting.  Sounds like eventually the choice will be between flying a space elevator with a big window (Blue Origin) or a rocket plane with a small window.  The capsule would have a better view but I wonder if the plane (VG) would be more fun. 
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Aerospace / Re: Space Ship II, White Knight II - projects, flights, info
« Last post by Flyaway on Today at 09:33:09 am »
Here are the stats for today’s test flight exceeding the altitude of the last one.

https://twitter.com/virgingalactic/status/1098997029957599232

Quote
SpaceShipTwo reached an apogee of:
55.85miles
294,9007ft
89.9km
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