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Search: Posts Made By: gdbaldw
Showing results 1 to 12 of 12
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Forum: Rotorheads
19th May 2011, 16:15
Replies: 23
Views: 8,458
Posted By gdbaldw

@Lonewolf_50 While staying under the...

@Lonewolf_50



While staying under the radar screen over the past few years, all studies and functional flight demonstrations were paid through small Government R&D contracts. However, as is...
Forum: Rotorheads
17th May 2011, 13:54
Replies: 23
Views: 8,458
Posted By gdbaldw

Vertiflite Magazine (of the American Helicopter...

Vertiflite Magazine (of the American Helicopter Society) - Summer 2011 - has an illustrated feature article on the Mono Tiltrotor (MTR), available here...
Forum: Rotorheads
16th Dec 2010, 23:49
Replies: 23
Views: 8,458
Posted By gdbaldw

@Graviman Hope you are feeling better. ...

@Graviman

Hope you are feeling better.

While longitudinal stability is greatest at a 45-degree mast tilt angle as discussed earlier, this trimmed flight condition also has zero load on the...
Forum: Rotorheads
3rd Dec 2010, 18:29
Replies: 23
Views: 8,458
Posted By gdbaldw

@Graviman Yes, Dr. Leishman lead the...

@Graviman



Yes, Dr. Leishman lead the initial study in 2004 that concluded the MTR, if ultimately found to be technically feasible, would be half the size, 1/3 the weight, and 1/3 the fuel...
Forum: Rotorheads
3rd Dec 2010, 16:48
Replies: 925
Views: 349,895
Posted By gdbaldw

Lift-to-Drag effective

Are there any authoritative reports of L/De? I calculate L/De = 5.4 from the data at post #787 and the statement at 17:12 minutes into the video of post #768. Wonder if anyone else has these numbers,...
Forum: Rotorheads
26th Nov 2010, 13:31
Replies: 23
Views: 8,458
Posted By gdbaldw

@glum Regarding your design... ...

@glum

Regarding your design...



I agree with 212man that these seem optimistic. In general, I find historic structural weight of aircraft to be roughly 1/3 for fixed wing and 1/2 for...
Forum: Rotorheads
25th Nov 2010, 13:34
Replies: 23
Views: 8,458
Posted By gdbaldw

Hi John, > So, given we have helicopters...

Hi John,

> So, given we have helicopters and the Osprey, what is your USP?

Unique selling point (USP) is a the combination of range AND speed AND vertical agility, ALL on the same mission....
Forum: Rotorheads
23rd Nov 2010, 23:23
Replies: 23
Views: 8,458
Posted By gdbaldw

@Rigga: Nosey is fine by me. Let's see if I can...

@Rigga: Nosey is fine by me. Let's see if I can answer.

>I'd guess your model to be about 4ft wing span.
Pretty good guess. Wing span is 5ft and rotor blades are 550mm diameter.

>Do the...
Forum: Rotorheads
23rd Nov 2010, 12:51
Replies: 23
Views: 8,458
Posted By gdbaldw

@John R81: The design has a constant RPM in heli...

@John R81: The design has a constant RPM in heli mode, and 84% of hover RPM in airplane mode. Blade twist is similar to V-22/XV-15, with a slightly modified lower rotor blade to account for the upper...
Forum: Rotorheads
23rd Nov 2010, 12:22
Replies: 23
Views: 8,458
Posted By gdbaldw

@John R81: Yes, conference papers summarizing...

@John R81: Yes, conference papers summarizing restricted access technical reports are available. Design has constant RPM in heli mode, and reduction to 84% of hover RPM for airplane mode cruise. ...
Forum: Rotorheads
23rd Nov 2010, 10:48
Replies: 23
Views: 8,458
Posted By gdbaldw

@cattletruck: The aircraft has...

@cattletruck: The aircraft has pitchlinks/swashplates to beat air into submission. Look closely and you will see the coaxial swashplates. Thank you for viewing and commenting.
Forum: Rotorheads
23rd Nov 2010, 02:38
Replies: 23
Views: 8,458
Posted By gdbaldw

Flight tests of a Mono Tiltrotor (MTR)

I've lurked. And now I'm putting this video out for come what may. Constructive comments welcomed. We're testing at a scale that our current funding supports.

vBfW4mbrodA
Showing results 1 to 12 of 12


 
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