1994-07-31 - Re: Orbital Sciences Corporation

Header Data

From: Lyman Hazelton <lrh@crl.com>
To: Christopher Davis <ckd@loiosh.kei.com>
Message Hash: a7cfd8df3447c2bf0dc49773483344a98d075dde4d017207310e2b0dbe797334
Message ID: <Pine.3.87.9407302120.A12948-0100000@crl.crl.com>
Reply To: <199407310046.UAA00277@loiosh.kei.com>
UTC Datetime: 1994-07-31 04:07:05 UTC
Raw Date: Sat, 30 Jul 94 21:07:05 PDT

Raw message

From: Lyman Hazelton <lrh@crl.com>
Date: Sat, 30 Jul 94 21:07:05 PDT
To: Christopher Davis <ckd@loiosh.kei.com>
Subject: Re: Orbital Sciences Corporation
In-Reply-To: <199407310046.UAA00277@loiosh.kei.com>
Message-ID: <Pine.3.87.9407302120.A12948-0100000@crl.crl.com>
MIME-Version: 1.0
Content-Type: text/plain

OSC has already used their modified L1011 to launch a Pegasus.  Last 
month they launched a stretch Pegasus from the plane for the first time.  
Unfortunately they are using new control software in the Pegasus and it 
did not properly take into account the difference in the Phugoid 
frequency of the stretched bird.  The result was positive feedback in the 
yaw control loop causing failure of the main wing.  A self destruct 
charge was detonated from the control facility aboard the L1011.  They 
are due to try again sometime soon.

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