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Search: Posts Made By: janrein
Showing results 1 to 11 of 11
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Forum: Tech Log
12th Nov 2014, 17:24
Replies: 48
Views: 25,057
Posted By janrein

@wiggy Quick find! And I would say relevant...

@wiggy
Quick find!
And I would say relevant (admitted remotely) to the SS2 mission.
Forum: Tech Log
12th Nov 2014, 12:27
Replies: 48
Views: 25,057
Posted By janrein

With the additional insight from the Discovery...

With the additional insight from the Discovery News ref. (RetiredF4 post)



So not only must a sufficient Mach number have been reached (to be clear of the complex dynamics of the transsonic...
Forum: Tech Log
9th Nov 2014, 12:50
Replies: 48
Views: 25,057
Posted By janrein

@RetiredF4 What a wealth of information,...

@RetiredF4
What a wealth of information, amazing reading that PiRep.

Must re-read and digest.
Forum: Tech Log
9th Nov 2014, 12:15
Replies: 48
Views: 25,057
Posted By janrein

@PeterH My hunches for the main drivers: ...

@PeterH

My hunches for the main drivers:

Before unlocking:
- Assure sufficient Mach number (M 1.4 plausible number) to stay clear of transsonic regimeīs agressive and complex dynamics;
-...
Forum: Tech Log
9th Nov 2014, 10:23
Replies: 48
Views: 25,057
Posted By janrein

@RetiredF4 PeterH upthread had found some...

@RetiredF4

PeterH upthread had found some details about the pneumatic system.
http://www.pprune.org/tech-log/550547-virgin-galactic-tech.html#post8726231

More questions remain.
- Pneumatic...
Forum: Tech Log
9th Nov 2014, 09:13
Replies: 48
Views: 25,057
Posted By janrein

Early unlock

@RetiredF4


Good find that patent!

About the unlocking, to my understanding:

The earlier in flight that you can allow unlocking - provided already having reached safe margin to uncommanded...
Forum: Tech Log
4th Nov 2014, 21:18
Replies: 48
Views: 25,057
Posted By janrein

Bank angle and roll rate, what limits?

@RetF4 and @PJ2

The SS2 has only started to open the lower part of its intended flight envelope and has not even come close to the achieved performance of SS1. Itīs a major scale-up, and clearly...
Forum: Tech Log
4th Nov 2014, 18:54
Replies: 48
Views: 25,057
Posted By janrein

Rocking and rolling

@ RetiredF4


I find it hard to estimate at what stage the jets will be applied in ascent and until when in descent, for the SS Orbiter the "blended use" was over a wide regime of altitudes and...
Forum: Tech Log
4th Nov 2014, 18:13
Replies: 48
Views: 25,057
Posted By janrein

Various venting events

PJ2


Thanks, triggered me to looking further into that.
( video https://www.youtube.com/watch?v=0mCFxAsmnk0 )

This is what I see and what I think I hear.
0:44 End of motor burn observed...
Forum: Tech Log
4th Nov 2014, 14:03
Replies: 48
Views: 25,057
Posted By janrein

Lateral stability etc.

RetiredF4

From an AWST article posted earlier (Sept 7, 2009)


The SS2 reaction control system is remotely similar to the Space Shuttle Orbiter RCS. For the SSO re-entry was considered to start...
Forum: Tech Log
4th Nov 2014, 08:33
Replies: 48
Views: 25,057
Posted By janrein

Feather moment considerations, abort scenario

Thanks for that AWST article, a wealth of information!

By deduction and combination from the various sources:
Feather unlock (and actual feathering?) nominally at Mach 1.4 (says NTSB Hart)...
Showing results 1 to 11 of 11


 
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