BLU-107 Durandal

The Durandal is an anti-runway penetration bomb developed by the French company Matra (now MBDAs and exported to several countries. A simple crater in a runway could be filled in without issue, so the Durandal uses two explosions to displace the concrete slabs of a runway, thus making the damage to the runway far more difficult to repair. The bomb is named after a mythical medieval French sword.

Overview

Designed to be dropped from low altitudes, the bomb's fall is slowed by a parachute. The maximum release speed is and the minimum release altitude is . When the bomb has reached a 40° angle due to the parachute's drag, it fires a rocket booster that accelerates it into the runway surface. The primary charge explodes after the weapon has penetrated the concrete and drives the secondary charge even deeper. The secondary charge then explodes after a one-second delay. Later production weapons have a programmable fuse that can delay the secondary detonation up to several hours.

The weapon can penetrate up to of concrete, and creates a crater deep and approximately in diameter. In addition, concrete slabs around the crater are disturbed in an area approximately in diameter. The disturbed slabs are displaced up to above the original surface, making repair more difficult than the simple crater from a conventional bomb.

Service history

There is a persistent story that the first use of the current Matra Durandal was by Israeli Mirages during the Six-Day War. This is inaccurate, as this war took place ten years before the Durandal was first available on the arms market. Rather, the prototype French/Israeli anti-runway weapon program which cratered Egyptian runways in 1967 is related, but distinct from the Durandal. The Israeli weapon used rockets rather than parachutes to brake over the target. The Matra development branch was in development from 1971 on and would form the basis for the Durandal which uses parachute braking.

The Durandal was adopted by the US in a slightly modified form (with a steeper impact angle and a higher 630 knot deployment speed) as the BLU-107/B in the 1980s, and carried by F-111 and F-15E strike aircraft.

In addition, the Durandal is in service with Argentina, Turkey, and at least 14 other nations. The Durandal is not currently in the weapon inventory of the French Armée de l'Air

It was used by the US Air Force in Desert Storm, delivered by F-111E's of the 20th Fighter Wing based in Turkey. 20th Wing flight commander Captain George Kelman said "there is nothing better at destroying a runway than a Durandal."

It has been reported that China has developed its own anti-runway bombs, the Type 200A, using Durandals as models. In the 1980s, China purchased a number of Durandals from France.

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See also

* BAPI – A Brazilian anti-runway weapon
*DRDO SAAW – An Indian precision-guided anti-airfield weapon
* JP233 – A British anti-runway weapon
* BAP 100 – A smaller French anti-runway weapon adopted by the French Air Force

References

External links

BLU-107 page on GlobalSecurity


{{Use dmy dates, date=June 2017

Aerial bombs of France
Anti-runway weapons
Matra
Military equipment introduced in the 1970s