Updated list of launch times for GMD Intercept Tests (August 10, 2015)

This post updates my post of June 3, 2013 by adding FTG-07 and FTG-06b.  The table shows that MDA has still not conducted a GMD intercept test in which the target was not illuminated by the Sun.

GMDTestTimes2015

Location Key:  VN = Vandenberg Air Force Base, California

KD = Kodiak, Alaska

KW = Kwajalein Atoll.

All times are local (either standard or daylight savings, whichever is in effect).

Kodiak is four hours behind east coast time.

Kwajalein does not use daylight saving time and is 17 hours ahead of EST and 16 ahead of EDT.

The table shows the launch locations and times (extracted from MDA press releases and news reports) for the seventeen intercept tests of both prototype and operationally-configured GMD ground-Based Interceptors (GBIs).    Data for intercepts claimed as successful are in black and data in red is for failed intercept attempts.  As the table shows, the latest interceptor launch time for a successful intercept is 3:19 pm local time (IFT-7).  Taking into account the relative time and location of the target and interceptor launches, it is clear that all the successful intercept attempts took place with the target directly illuminated by the Sun.

There is one intercept attempt that clearly took place at night (IFT-10), in which the interceptor was launched at about 8:45 pm local time and in a direction generally heading away from the Sun.  However, the intercept attempt failed when the kill vehicle failed to separate from the final booster stage.

Two other intercept attempts were conducted in which the interceptor launch would have occurred shortly before local sunset, IFT-13c and IFT-14.  However, in both these cases, the interceptor failed to launch.  Without knowing where the intercepts were planned to take place (and I haven’t tried to find out),one cannot be certain if the targets would have been sunlit, but give the targets’ launch locations (Kodiak) and typical intercept altitudes (250 km) in earlier tests, it seem likely they would have been.

Advertisements
Leave a comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: