Ground-directed bombing

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For bombing directed by airborne
Forward Air Controllers (FAC-A), see Forward air control § War of movement
.

Ground-directed bombing (GDB) is a military tactic for

ground observers). Often used in poor weather and at night (75% of all Vietnam War bombings "were done with precision [sic] GDB"),[1] the tactic was superseded by an airborne computer predicting unguided bomb impact from data provided by precision avionics (e.g., GPS, GPS/INS, etc.) Equipment for radar GDB generally included a combination ground radar/computer/communication system ("Q" system) and aircraft avionics for processing radioed commands.[2]

A 21st century variant of ground-directed bombing is the radio command guidance for armed unmanned aerial vehicles to effect ground-directed release of ordnance (e.g., precision-guided munitions for bombing such as the AGM-114 Hellfire).[3]

World War II

In early 1945, ground-directed bombing was invented by Lt Col Reginald Clizbe, deputy commander of the

47th Bombardment Group (Light), using automatic tracking radar in Northern Italy for A-26C missions (e.g., in the Po Valley).[4] Development was by a team that included Donald H. Falkingham (who was awarded the Air Medal)[5] that modified radar plotting to transmit control commands to the pilot direction indicator (bomb release was eventually automated from the ground radar).[4] Similar to the ground training configuration in the US for bombardiers with the Norden bombsight, in a tent near the SCR-284 radar[6] a bombsight was automatically positioned over a large map by the plotting signals converted from the radar track's spherical coordinates from the SCR-284 ranging and antenna pointing circuits. The guidance signals output from the moving bombsight as it viewed the map were then relayed to the aircraft as if the bombsight were on board (e.g., to a 1945 AN/ARA-17 Release Point Indicator).[7]

V-2s
bombarding England used radio control in 1944.)

Korean War

Rome Air Development Center[17] (MPS-9 radar & OA-215)[16] began arriving in 1951 (in October,[18] one GDB detachment that hadn't been provided MSQ-2 Technical Orders mistakenly bombed itself by using MSQ-1 procedures.)[19] Korea GDB operations of 2380 & 204 respective daylight & nighttime raids included 900 flown by USMC Vought F4U Corsairs.[13]

Vietnam War

Main article: Combat Skyspot

Commando Club was used for GDB of the Red River Delta (e.g., Hanoi
).

Late Cold War

Post-Vietnam War GDB Strategic Air Command missions were occasionally used for training/readiness, e.g., to maintain proficiency of aircrews and SAC's GDB-qualified technicians at 1st Combat Evaluation Group RBS sites. A new GBD system developed c. 1980 from the [who?]AN/TPB-1C Course Directing Central was the solid-state US Dynamics AN/TPQ-43 Bomb Scoring Set[4] which included optical tracking.[5] The AN/TPQ-43 ("Seek Score") replaced the AN/MSQ-77, -81, & -96 systems at the end of the Cold War[23] before being decommissioned in 2007,[24] and GDB systems were also designated for use during airdrops as part of the Ground Radar Aerial Delivery System (GRADS).[25]

Iraq War

References

  1. ^ "AN/MSQ-77". FAS Military Analysis Network: Equipment. Federation of American Scientists. January 9, 1999. Retrieved 2012-07-17.
  2. Northrop T-38C in 2007)."Archived copy" (PDF). Archived from the original (PDF) on August 9, 2012. Retrieved September 23, 2012.{{cite web}}: CS1 maint: archived copy as title (link
    )
  3. ^ "Close Air Support Using Armed UAVs? - Page 2". www.military.com. Retrieved 2016-04-18.
  4. ^
    ISBN 9781563112409, retrieved 2012-05-26, Won his first Air Medal while working with Col. Clizby in developing a means to bomb close support to the troops using ground control radar. NOTE: "bombing by radar-control" is identified in a "19 February 1945" listing of the Combat Chronology.[1]
  5. ^ Falkingham, Donald H. "Donald Falkingham A-26 And A-20". World War II Pilots. Archived from the original on January 31, 2011.
  6. ^ "Trivia Question - alt.military.retired | Google Groups". groups.google.com. Archived from the original on 10 July 2012. Retrieved 2 February 2022.
  7. ^ Preliminary Operation and Maintenance Handbook for Release Point Indicator AN/ARA-17. Radiation Laboratory, Massachusetts Institute of Technology. 1945-01-01.
  8. ^ "Combatevaluationgroup : Messages : 3206-32012 of 100260". webcache.googleusercontent.com. Archived from the original on 9 December 2012. Retrieved 2 February 2022.
  9. ^ "Willys-Overland LTV-N-2 Loon".
  10. ^ http://www.radomes.org/museum/guestbook.php?guestfile=2004/guest200407.txt (see also Yahoo posting 12333)
  11. ^ a b "Archived copy" (PDF). Archived from the original (PDF) on 2011-11-27. Retrieved 2012-10-26.{{cite web}}: CS1 maint: archived copy as title (link)
  12. ^ "Legacy Files - 3903rd Radar Bomb Scoring Group - USAF - Korean War Project".
  13. ^ a b "Tadpoles". Archived from the original on 2012-02-04. Retrieved 2012-09-23.
  14. ^ http://www.airforce-magazine.com/MagazineArchive/Pages/2000/October%202000/1000korea.aspx
  15. ^ "History". Archived from the original on 2012-06-15. Retrieved 2012-10-26.
  16. ^ a b [2][permanent dead link]
  17. ^ Article title
  18. ^ "Air Force Historical Support Division > Home" (PDF). Archived from the original (PDF) on 2013-02-11. Retrieved 2012-10-26.
  19. Bulletin Board
    )    . KoreanWar.org. Retrieved 2012-05-20. On the MSQ-1, we operated in the same manner, but later learned that [for the "brand new MSQ-2 plotting equipment"] we should have entered the target coordinates into the new digital/analog computer, AND THEN 'ZEROED' THEM OUT AGAIN. The computer would remember the offset and track accordingly. Unfortunately, we did not know that without the TO's. By leaving them in, like the 584, we effectively located the target's position over the top of ourselves.
  20. ^ from Direct Air Support Center wikipage
  21. TACAN
    used multiple beacons, not Skyspot--which used only one radar even if a non-transmitting Skyspot backup receiving the A/C transponder returns tracked or later commanded the bomb run.
  22. ^ Morocco, John (1985). Rain of Fire: Air War, 1969–1973. Boston: Boston Publishing Company. p. 14.
  23. ^ Jost, Alan C. (2007). ConOps:The Cryptex to Operational System Mission Success (PDF) (Report). Raytheon. Archived from the original (PDF) on 2012-08-05. Retrieved 2012-07-09.
  24. ^ [3][permanent dead link]
  25. ^ http://www.e-publishing.af.mil/shared/media/epubs/AFI11-231.pdf[permanent dead link]
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